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#1 2018-02-19 00:41:42

kenbw2
Member
From: Bradford
Registered: 2017-11-26
Posts: 117

Those of you with 1.9D DW8 engines, what MPG do you get?

I've come from both the Citroen Synergie and Peugeot 806 with the XUD9 TD engines. I was expecting similar MPG from my Dispatch, but unfortunately that's not what I'm seeing.

I just did a 620 mile tank-and-a-bit, on 93 litres of fuel - coming out at 30.14 MPG. I'm pretty disappointed, especially as that's about 50% sensible motorway driving.

Some possible considerations:

- I'm running 50:50 on SVO
- I have a Bosch pump originally from an XUD9 engine
- I have the 1999 DW8 engine with none of the electronic advance, and no ECU
- I recently had my air intake off and checked the EGR, it's all clear
- I am charging a leisure battery, not sure how much the alternator would drag
- I do sometimes do some extended idling, but wouldn't expect that to consume all that much

I'm interested to see what your experiences are.

Last edited by kenbw2 (2018-02-19 00:42:48)


1999 Citroen Dispatch 1.9 DW8 Camper Conversion

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#2 2018-02-19 09:41:05

tee_cee
Member
Registered: 2016-03-18
Posts: 151

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

This just reminded my to do the sums on our last French trip in September.
The van is 2002 and the engine is DW8B 1.9D 71bhp
I recorded 2133 miles from Calais to Grenoble, up and down a bunch of mountains, and then back to Cherbourg.

The average for the trip was 36.74mpg.

I can see that the way out to Grenoble, which was all 70mph on motorways, was about 37.25mpg.
The way back to Cherbourg was 60mph on mostly A roads, and that was about 39.5mpg.
The bits in between, in the mountains and gnarly B roads, was 32.5 to 35mpg. 

Overall pretty pleased with mpg considering the weight that I usually carry.

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#3 2018-02-19 10:18:52

Casper
Member
From: East Lothian
Registered: 2015-12-20
Posts: 1,103

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

If it makes you feel better i worked yours out at 30.26 big_smile but aye that sounds low. My last trip in mine was down the Black Forrest Germany. 70mph creeping to 80 sometimes when on motorways. Lots of country roads when down there but up and down mountains. When i got home some 1750 miles later the engine had done 160k miles i averages 35mpg

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#4 2018-02-19 12:37:52

kenbw2
Member
From: Bradford
Registered: 2017-11-26
Posts: 117

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

Sounds like 35MPG is normal for mixed driving then. I'll have to give mine a go with 100 dino diesel and see if that helps, and no idling too.

Casper wrote:

70mph creeping to 80 sometimes when on motorways

Creeping to 80 - must've been a strong tailwind smile I did a very rush job from Luxembourg to Calais on 100% derv and got 31MPG, but that was literally foot down all the way so I didn't miss my ferry. Not that it helped mind, they had an incident and 6 hour delay at the port =/


I'm off to the Black Forest in summer actually. Any decent overnight spots?

Last edited by kenbw2 (2018-02-19 12:44:17)


1999 Citroen Dispatch 1.9 DW8 Camper Conversion

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#5 2018-02-19 13:00:18

vaz2121
Member
From: SW. Scotland
Registered: 2015-08-31
Posts: 386

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

2005 Dispatch DW8
Our last Spanish trip from leaving SW Scotland a round trip of roughly 4,600mls and a return of a smidgen over 40 mpg and that at mostly 60 .... 70mph.

Although of late ...... I've allowed a bit of extended idle.
My last couple of refills have returned around the very low 30's and on one particular half tank refill (which was all short in town and cold icy sh** weather) as low as 28 point something hmm ..................

Normally I'm around the 36mpg with mixed type journeys

(Our {200,000 mile+}306 with DW8 and a Bosch pump is easily in the low--mid 40's on mixed journeys)

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#6 2018-02-19 13:17:26

vaz2121
Member
From: SW. Scotland
Registered: 2015-08-31
Posts: 386

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

kenbw2 wrote:

I'm off to the Black Forest in summer actually. Any decent overnight spots?


Used this site with varying levels of success

https://www.campercontact.com/en/

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#7 2018-02-19 15:07:57

Casper
Member
From: East Lothian
Registered: 2015-12-20
Posts: 1,103

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

Depends what you are going for me was just a taster and last year passing through so its more basic sites for me what are cheap. Where you crossing from? I did Hull to Zeebrugge. Get off the ferry fast and fill up at closest garage what is about a mile down the main road. I head for Luxembourg  as the wife is a smoker so we get the years tobacco out a place called Route66 what we almost pass anyway

http://www.route66-tobacco-lux.com/

https://www.google.co.uk/maps/@49.64706 … ,18z?hl=en

Last year from here I just went south over the border into France to a campsite for the night

http://www.siercklesbains.fr/index.php/le-camping

https://www.google.co.uk/maps/@49.44541 … ,16z?hl=en

Very cheap site what is clean and cheap. Right on the bank of the Moselle. Not much to do on site so pop into the Aldi up the road and take food and beer. There is a town further down the river what is about a 15 minute walk but we never ventured down. You can see it from the site. Next morning I headed straight for the Black Forrest region but that is toll roads through France. If you are to tight for that the year before after route 66 I headed east along the French German border to this site at Rastatt Germany

http://murgtal-camping.de/

https://www.google.co.uk/maps/@48.86157 … ,16z?hl=en

That is more basic as the last and a good mile walk to any civilisation but I was just passing through and it was cheap. When I say cheap I mean like €20 with power and shower for the night but that is just over 500 miles from ferry so a long day if stopping for tobacco and lunch.

There I went south to Black Forrest. I rook in a roller coaster at a place called Todtnau. The road down soon gete into country roads over some amazing scenery with plenty roadside cafes if you want food or just stop to take pictures. I had my sat nav set to shortest route rather than quickest. Quickest tend to take more motorways.

https://www.hasenhorn-rodelbahn.de/

From the roller coaster I was heading south for this site but forgot to book in advance and it was full. The road down took us through some nice typical German valleys.

https://www.dreilaendercamp.de/

https://www.google.co.uk/maps/@47.62499 … ,16z?hl=en

Watch where you drive if here as you are less than a mile from the Swiss border and they still di the passport checking crap. Not a problem just time consuming as they can be thorough.



It looked clean and well maintained. Town looks busy with plenty shops, restaurants and the likes. We ended up in this site. You are a good 20 minute walk to town but we took food and beer. Nice clean site what is quiet but would have preferred the full one

http://www.terrassen-camping-kandern.de … ow=camping

https://www.google.co.uk/maps/@47.71957 … ,17z?hl=en

From there I went east to the border to get to the bottom of the road heading north numbered the 500. It gets raved about on bike forums for stunning roads and scenery but the bottom half was crap so if down that way again I would head up the 317 passing the Roller Coaster and head for Lake Titisee. I never stayed there just stopped for lunch at the north side

https://www.google.co.uk/maps/@47.90134 … ,17z?hl=en

But there is campsites round the lake. The wee ton is very nice an typically German. Lots of eating and drinking places. Boat or peddlos hire on the lake if you must and tack tourist shops. The views down the lake is stunning.

Again heading north if a cuckoo clock the size of a small house appeals to you then visit this place.

https://www.google.co.uk/maps/@48.18880 … ,19z?hl=en

Drag the we man to see it on street view. The ship to the right sells tourist stuff but only if you are stinking rich. A steiff teddy the size of a keyring was €70 but the roads and scenery is nice.

From there I went north to Cochem for a couple of nights then onto Holland for a bikers rally before having a quiet night in Belgium then ferry home.

As I say our trip was just a taster and we enjoyed what we seen so will be going back to see more soon. If you are more wild camping I cant help but this site might

https://www.searchforsites.co.uk/

Drag the map to your location/destination and zoom in. Hit search and it will show all kind of sites as well as safe free park areas.

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#8 2018-02-19 16:52:18

tee_cee
Member
Registered: 2016-03-18
Posts: 151

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

Always plan to fill up in Luxembourg, cheapest in europe.  I like the look of that site in France. We usually overnight in Luxembourg, but the sites are mainly used for transit, and it shows.
If traveling outside mid-July & August I'd recommend getting an ACSI card - prices are fixed (11-19 euros) for 2 people/shower & power.

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#9 2018-02-19 17:10:22

Casper
Member
From: East Lothian
Registered: 2015-12-20
Posts: 1,103

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

Aye forgot to add ASCI. Got one last year and all bar one site accepted it.  Here, the cheapest one on the left is all you need. Just mention it and flash the card when booking in for your discount. If out of season you get more discount and some offer no discount at high session. I saved well over my £15 layout

https://www.campingcard.co.uk/extra-inf … card-acsi/

I looked into sites in Luxembourg tee_cee (South) but none of the buggers would answer me when i wanted to advance book to decided to go over the border. I was heading south down Lorrach way the next day so made sense heading that way. I crossed that section twice now and once was with the sat nav set to no toll roads and you are lucky if that cost me 20 minutes.

This is how close i was to the Moselle at that French site

image.jpg

Last edited by Casper (2018-02-19 17:59:40)

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#10 2018-02-19 18:48:15

vaz2121
Member
From: SW. Scotland
Registered: 2015-08-31
Posts: 386

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

Off MPG topic

Tee_Cee-Casper .............
Brought me in mind of 30 years ago
One of the fairly long regular contracts I did was with Ford (5 round trips every 3 weeks).... I picked up empty stillages at Halewood and exchanged them for full ones at Ford Saarlouis and ship them back to Halewood....
At the time predominately used Ostend and Zeebrugge for just about everything (Townsend Thoresen) ...... I remember on this job the talk about classic tank country- battle of the bulge etc.
The route then was we picked up and always fueled up regardless on the N4 at Martelange (Bastogne- Arlon) and then on to Luxembourg ( pretty much past Windhof) skirted the city on to the E29----- I always remember knowing we were near the German border and onto the final stretch when seeing the road sign for Rolling and Assel but for us it was Rolling Ars*hole
(Martelange---one side of the street is all houses - Belgium - the other-side - Luxembourg -  is nose to tail with petrol stations)

Tee_Cee your correct Luxembourg has always felt transient and around (Dillinger) Dillingen & Saarlouis feels very industrialized but I guess that's the nature of beast and why I was there in the first place...............

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#11 2018-02-19 19:25:25

Casper
Member
From: East Lothian
Registered: 2015-12-20
Posts: 1,103

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

TBH when on a jolly do you really bother about MPG? I only did an average out of curiosity and i know how much i put aside for fuel so its easy to work out rather than keeping receipts. To be getting 35 out this old heavy bus i am chuffed but i do wonder why you bother with 50/50 mix with veg oil kenbw2. I presume SVO is straight so unless you are getting it mega cheap are you saving a great deal per tank?

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#12 2018-02-19 19:34:51

kenbw2
Member
From: Bradford
Registered: 2017-11-26
Posts: 117

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

Casper wrote:

TBH when on a jolly do you really bother about MPG?

That's the biggest thing I bother about! Because it means I can go on more/further jollies for the same money smile

Casper wrote:

I only did an average out of curiosity and i know how much i put aside for fuel so its easy to work out rather than keeping receipts. To be getting 35 out this old heavy bus i am chuffed but i do wonder why you bother with 50/50 mix with veg oil kenbw2. I presume SVO is straight so unless you are getting it mega cheap are you saving a great deal per tank?

Same applies to SVO. I'm on 50:50 atm because winter, I'll be ramping up as the weather warms up. I'm getting it anywhere between 76p and £1 a litre depending on offers - I stockpiled lots when it was last 76p a litre at Tesco. At 80p/litre (compared with derv at £1.20/litre) that means I'm paying roughly 2/3rds per tank compared with derv.

I'm conscious of it being a false economy though, hence wondering if it's degrading my MPG.

Yea, if 35MPG is what can be expected, then I'm... accepting of that. Just wanted to make sure I've not got something faulty adversely affecting it.

Last edited by kenbw2 (2018-02-19 19:41:43)


1999 Citroen Dispatch 1.9 DW8 Camper Conversion

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#13 2018-02-19 19:45:54

Casper
Member
From: East Lothian
Registered: 2015-12-20
Posts: 1,103

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

Your just going to have to fill up with diesel and find out. I kind of pre plan a jolly so know i am going to do around 1700 miles. So just divide that with my rough mpg (35) i have 49 gallons (round up) What a lt now £1.19? i would budget £265 for fuel. Probably a bit more for taking detours to see something.

BTW i quick fag packet sum that same trip ^^ would only cost you around 40 quid more on your MPG.

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#14 2018-02-19 19:51:59

kenbw2
Member
From: Bradford
Registered: 2017-11-26
Posts: 117

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

Casper wrote:

Your just going to have to fill up with diesel and find out

Yup. I's not really the veg I was worried about, rather if there's something else wrong with the engine that could be a problem.

Casper wrote:

BTW i quick fag packet sum that same trip ^^ would only cost you around 40 quid more on your MPG.

Yea it's not massive. I was more comparing with the 40MPG I felt like it should be getting (I'm going off the aforementioned Synergie/806 1.9TDs which got mid-to-high-40s on a decent run).

But if mid-to-high-30s is the best I can expect, then I'm a bit less concerned that there's a fault.

Last edited by kenbw2 (2018-02-19 19:52:41)


1999 Citroen Dispatch 1.9 DW8 Camper Conversion

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#15 2018-02-19 20:19:07

Casper
Member
From: East Lothian
Registered: 2015-12-20
Posts: 1,103

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

My and i think Vaz mid 30's was with a set of roof bars and top box. Mine was big old bulky thing so may have got an extra couple of MPG. Apart from running oil you got a standard van. Right size wheels, tyres. And brake binding or the likes.
Finny as when i got the van i was thinking i would get low 40's as i had the 306 1.9D and that was low 40's. Not thinking the van being heavy and less streamline.

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#16 2018-02-19 20:30:57

kenbw2
Member
From: Bradford
Registered: 2017-11-26
Posts: 117

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

Casper wrote:

My and i think Vaz mid 30's was with a set of roof bars and top box. Mine was big old bulky thing so may have got an extra couple of MPG.

Hmm, I don't have anything on the roof bar a flexible solar panel. Dammit, now I'm back to thinking there's something up with mine

Casper wrote:

Apart from running oil you got a standard van. Right size wheels, tyres. And brake binding or the likes.

Actually that's one thing I noticed. WIth my 806/Synergie I had 15" (205/65 R15) wheels. My Dispatch has 14" (195/70 R14) wheels which I thought was odd but didn't think much of it. But then I noticed some Dispatch/Expert/Scudos have 15" wheels too. Smaller wheels will offer a better apparent MPG though so if anything that'll help things.

No evidence of brakes binding.

The other nonstandard mod is my Bosch pump off an XUD9 306. I wasn't super scientific, but I remember my MPG being comparable with the Lucas one.

Casper wrote:

Finny as when i got the van i was thinking i would get low 40's as i had the 306 1.9D and that was low 40's. Not thinking the van being heavy and less streamline.

Yea I thought the 306 would do better in terms of performance too, since it's a lot smaller. I gather the DW8 Berlingo folks get low-to-mid 40s too. I thought the 806/Synergie would be a lot closer to the Dispatch since they're basically the same, and it's the difference here that bothers me.

Last edited by kenbw2 (2018-02-19 20:31:55)


1999 Citroen Dispatch 1.9 DW8 Camper Conversion

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#17 2018-02-19 20:48:07

Casper
Member
From: East Lothian
Registered: 2015-12-20
Posts: 1,103

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

I take it you did the obvious and looked for evidence of fuel leak. I had it in my head the larger wheel would be better. Marginal but a larger distance covered per revolution. Was the 806/synergie not lower roofs to the vans?

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#18 2018-02-19 20:54:50

tee_cee
Member
Registered: 2016-03-18
Posts: 151

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

kenbw2 wrote:

Actually that's one thing I noticed. WIth my 806/Synergie I had 15" (205/65 R15) wheels. My Dispatch has 14" (195/70 R14) wheels which I thought was odd but didn't think much of it. But then I noticed some Dispatch/Expert/Scudos have 15" wheels too. Smaller wheels will offer a better apparent MPG though so if anything that'll help things.

Now there's an interesting thought. Anytime I work out mpg I use the odometer - yet looking at the satnav I know that the speedo is about 5% higher than reality.
Maybe you should calibrate the odometer with a gps tracking app (maybe osmand).
As for the tyres, I think 195/70 R14 are standard.

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#19 2018-02-19 20:58:26

kenbw2
Member
From: Bradford
Registered: 2017-11-26
Posts: 117

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

Casper wrote:

I take it you did the obvious and looked for evidence of fuel leak. Was the 806/synergie not lower roofs to the vans?

I actually do have a slight leak somewhere around the fuel pump, a couple of drips on the floor when I park up. Is it significant enough to affect the MPG? Not sure, I want to get it sorted at some point.

The 806/Synergie was lower, yea, so I expected a bit of a drop from that, but not ~10MPG. Maybe that's naive.

Casper wrote:

I had it in my head the larger wheel would be better. Marginal but a larger distance covered per revolution.


So did I, but the other angle is that the odometer is assuming one revolution is X miles. If the wheel is bigger, it'll be covering say 110 miles with the odometer thinking I've covered 100 miles, so the *apparent* mpg (miles according to the odometer vs litres used) goes down with bigger wheels. Also consider that the wheels are slightly heavier and slightly wider = bigger rolling resistance.

Last edited by kenbw2 (2018-02-19 21:00:36)


1999 Citroen Dispatch 1.9 DW8 Camper Conversion

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#20 2018-02-20 19:29:10

vaz2121
Member
From: SW. Scotland
Registered: 2015-08-31
Posts: 386

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

A 14" wheel is correct size wheel for DW8 van
I have 15" alloy wheels on mine but it was supplied new with 14" steels.
If I use a tyre size calculator it works out my wheel and tyre combination is now .3 of an inch taller so well within the speedo percentage error allowed .... (Don't remember what - but had to have tachograph calibrated and speedo had to be accurate within certain  percentage + or -)

Too tall a tyre will not only show less mpg as less revolutions per mile for speedo's  calibration but may also be physically worse than with standard wheels because engine will not have enough torque to rotate that size wheel (Think of it as leverage and strength) the gearing will be wrong and you'll be constantly going down to a lower gear.

(Casper will appreciate this)
I bought a 125cc bike for my partner-- her test, CBT etc. and top gear was virtually useless .... till I changed and added 2 teeth too wheel sprocket and it changed the bike entirely
not as fast top end but that only happened down hill with a breeze at your back but made it a much more usable wee bike....

In comparison to 306's and Berlingo's with DW8's --- I can say that my Dispatch is revving harder at any given speed than our 306 ( Don't know by how much as no rev counter in van) and it's obviously bigger and designed to gross far more weight than a 306/Berlingo van

In relation to my earlier reminiscing.....On the Ford's work I never grossed more than 24tons and a 6 ltr which had a puny 220bhp....
However fully loaded we managed 7.5 mpg but with empty stillages on it was 10 mpg

Couple years later I bought my own truck a 16ltr v8 rated at 350bhp and we ran down to Gorgonzola (NO Cheese) .....Outskirts of Milan
Anyway fully loaded at 38tons .... 6mpg...... running empty I averaged 6.6mpg........
A few years later I moved onto a 16ltr V8 with 530bhp at 40tons....... 9mpg .....running empty 10mpg
Technology, horsepower and efficiency has a lot to account for ......... hence XUD Turbo D's and HDI's and even the differences between them.

It's not all clear cut --- DW8's are not so fuel efficient in a Dispatch/Expert/Scudo (Simple yes) and little things can have a bigger effect --- so your right to quiz your MPG

kenbw2 -- This scribe's been a long way for a short cut but
Did you use a dial gauge when installing the Bosch Pump?

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#21 2018-02-20 19:41:39

kenbw2
Member
From: Bradford
Registered: 2017-11-26
Posts: 117

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

vaz2121 wrote:

A 14" wheel is correct size wheel for DW8 van
I have 15" alloy wheels on mine but it was supplied new with 14" steels.
If I use a tyre size calculator it works out my wheel and tyre combination is now .3 of an inch taller so well within the speedo percentage error allowed .... (Don't remember what - but had to have tachograph calibrated and speedo had to be accurate within certain  percentage + or -)

I have some alloys on my 806 I want to put on the Dispatch. I assume you've had no problems doing so? The only things putting it me off are the worsened apparent MPG and the fact that my 14" won't go over the 806's brake calipers.

vaz2121 wrote:

Too tall a tyre will not only show less mpg as less revolutions per mile for speedo's  calibration but may also be physically worse than with standard wheels because engine will not have enough torque to rotate that size wheel (Think of it as leverage and strength) the gearing will be wrong and you'll be constantly going down to a lower gear.

Hmm, I never thought about it affecting actual performance. Is it bad enough that I might want to reconsider? It needs all the oomph it can get as it is. I suppose I could keep the 15" alloys, and put smaller tyres on to compensate.

vaz2121 wrote:

Technology, horsepower and efficiency has a lot to account for ......... hence XUD Turbo D's and HDI's and even the differences between them.

Theoretically the XUD9 non-turbo and DW8 are basically the same horsepower so shouldn't see all that much difference in MPG. I am curious as to whether the TD will have higher or lower consumption, since turbo does mean more fuel injected, but maybe it helps?

vaz2121 wrote:

It's not all clear cut --- DW8's are not so fuel efficient in a Dispatch/Expert/Scudo (Simple yes) and little things can have a bigger effect --- so your right to quiz your MPG

Yea you can definitely feel that PSA were thinking "yea, it'll be reet", but kinda knew it was at its limit. God knows how it managed to pull the LDV Pilot.

vaz2121 wrote:

kenbw2 -- This scribe's been a long way for a short cut but
Did you use a dial gauge when installing the Bosch Pump?

I didn't fit it myself - I'm not brave enough to mess with a timing belt, so I had a diesel specialist fit it. From googling it looks like something to get the timing right? I'd have hoped he'd done whatever was needed to get it right, but he did seem to want to strike a balance between knocking and starting nicely.

Last edited by kenbw2 (2018-02-20 19:44:15)


1999 Citroen Dispatch 1.9 DW8 Camper Conversion

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#22 2018-02-21 02:11:04

vaz2121
Member
From: SW. Scotland
Registered: 2015-08-31
Posts: 386

Re: Those of you with 1.9D DW8 engines, what MPG do you get?

The fact that your 14" wheel doesn't fit over the 806 brakes (greater performance potentially greater speeds) they are obviously bigger and give a more all round stopping power than whats on van ( I wonder if they'd be a straight bolt on upgrade for van ?)
If you must have 15" Alloys on van..... Alfa Romeo rims fit  and a comparable tyre is a 195/65/R15  but watch load ratings of tyre ...(don't get paranoid you should be fine with most if not all on that size)
Your 205/65/15 tyre is almost an inch taller and half inch wider (unsure might rub on rear arch) that works out about 3" greater Circumference and 25 rpm less per mile than the standard 14" wheel and tyre ...............Doesn't sound a lot... but

You are correct about XUD9 and DW8's....... DW8 and HDI's are derived from XUD9's but basically use lighter materials..... I've had both Non Turbo XUD9's and TD's ..... DW8's and HDI 90's & 110's...
On paper the DW8 and NoN turbo XUD9 are all but identical power wise but XUD9 is better performer might not be much but in real world usage XUD9's have the edge over all but that's just my opinion and preference....

Not to get to anoraky..
Turbo version Bosch VE pump technology is dealing with boost ....... When on boost more fuel is injected than on a non turbo pump but in theory the same amount of fuel is injected as on a non turbo maintaining a given speed as your not under boost
The difference on a turbo VE Bosch pump is the LDA (Thing on top of pump look a bit like a sombrero hat) It measures the amount boost and varies the rate of fueling accordingly
This is partly why on a mpg scale non turbo's did better on urban cycle over turbo's and vice versa turbo's better over straight diesels on motorways etc. as your not on it throttle wise for as long to get your desired speed

DW8's ....non turbo engines of all descriptions are sort of looked at as short haul local...urban... high duty (generator) type applications
This is partly why the gearing has the engine working harder all the time so it can lug the gross weight when required

I helped replace a gearbox in a Scudo couple years ago....... the replacement gearbox was from a diesel picasso....... It fitted OK but the gearing was all to hell .... felt like pulling away in almost 2nd gear .... Basically OK when empty but it was a working van and a PITA when loaded (any give gear dependent not just 1st or top when fully loaded)

And yes a Dial gauge is fine tuning the timing of the pump........... this can dramatically effect performance, fuel consumption and how smokey the engine is under load even if your pump is out just a mm or so of lift at TDC......... (suffering I'm sure .. this very thing on a 22yr old diesel golf that I'm playing with and just resealed the pump on)

It all has an effect.......When you've converted your van to a Camper ... It's surprising just how much weights built in before we load up for a trip/holiday/Jolly away...........

Like you I'm worse of by almost 10 mpg overall ....Than our 306 essentially with same engine (DW8 but Bosch VE pump opposed to Lucas Cav/Delphy on van)on similar milage /routes round trips to Spain (best ever tank on 306 = 57mpg .. on easy stroll Dunkirk to Claremont Ferrand... Normals nearer 49 mpg)

Last edited by vaz2121 (2018-02-21 02:49:49)

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