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So has anyone fitted a diesel heater to their mark 3?
Had a quick look under the van a couple of days ago, and under the drivers eat looks to be a likely location (TBC) but how have people made the connection for fuel (I don't want to fit a separate tank).
Is there a line I can Tee into if so where or is it a drop and drill the tank scenario?
Last edited by Scratch (2025-01-25 19:29:50)
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Looking at the bits in one of the generic kits I have, there's a dip tube, giving the option to feed from the main tank. The idea being to cut it shorter than the engine supply so it doesn't leave you dry.
I've not got round to fitting it yet (it was pencilled in for a friend's Land Rover 110), but I'm sure I will find something to stick it into.
I have a friend who put one in a Transit and used the main tank. He also tells me that the time it takes to heat up has halved since insulating everything. Nick is @onemanup7895 on YouTube.
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Can you not splice into the feed before the inline filter?
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We installed one behind the driver's seat. Its on the other side of the bulkhead from the cab. Then I think the pipes go thru the bulkhead and through the floor of the van beneath the driver's seat. Can't remember the specifics because my partner did it; not me. I can ask her for details & photos if you want. We were nervous about dropping the tank, so feed the heater from a separate tank mounted to the inside of the rear door, but I understand you're not keen for that.
2018 Peugeot Expert Mk3 1.6L BlueHDi 115 hp
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I'm just planning this at the moment though probably won't get it fitted for a couple of months. The dpf sits right under the driver's seat on the 2.0 so I am going to try and squeeze it on to the step for the driver side sliding door, this way it will be behind the kitchen and out of the way.
I'm probably going to do a separate tank for it, I am paranoid about causing problems with the main tank and want to keep the conversion stuff as separate as possible in case of any future issues. Somewhere around the spare wheel there's quite a bit of space there.
I'm not 100% but the diesel heaters I've looked at say you can't tap it in to an existing line, I think all the lines are pressurised to some extent, and I don't think you would get reliable flow with the engine off.
I'll try and post a couple of photos when I finally get round to it! Would be interested to see any photos of other setups if they are easy to post
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I'm not 100% but the diesel heaters I've looked at say you can't tap it in to an existing line, I think all the lines are pressurised to some extent, and I don't think you would get reliable flow with the engine off.
I am sure that there is enough variation between different vehicles fuel supplies and different diesel heaters to warrant caution.
However the majority of the chinese heaters I have seen or read about in the past few years have taken fuel directly from various places along the fuel supply and return lines. Some took aditional precautions of one way valves and/or isolators but many have just plumbed straight in. The most recomended location was from the engine return fuel line which seems to make sense for a few reasons. All seemed to have been operating ok although a few mentioned having to bleed the system after fitting or when disturbing the supply at the heater end.
I am also far from 100% on this and as I absolutely loathe diesel heaters, have never fitted one myself. But I recon the majority of the thousands fitted since the vanlife craze took off are plumbed directly into existing fuel lines and working as well as can be expected. As were many of the far better engineered though more expensive heaters available in the decades before cheap Chinese shite took over.
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Yeah I had seen that people generally have used a spare pick up from the tank (that some vans have) or the return line, but until I look no idea if the mk3 has spare pick ups, or where the return line in is (some of todays jobs).
there seems to be very little info on line.
I did consider the separate tank bit, but my concern here is if I spill some (likely enough over time) then it will stink of diesel for days or even weeks, which is why I wanted to avoid this if I could and plumb directly in.
I have a 1.6.
I have already converted the bench seat to a second captain seat, so was considering:
-Centrally between the seats (adjusting the centre console that I made to suit) - no idea what is under this area yet.
- under the drivers seat (relocating the tool kit) - no idea what is under this area yet
- behind the drivers seat - no idea what is under here yet
- to the rear behind a wheel arch, but not sure I have space due to the layout of the van (batteries and charger all around passenger rear wheel arch)
I know it wont go under passenger seat as had a quick look there and the adblue tank appears to be there.
if it stays dry, the van will be up on the ramps later to have a good look and see what may be possible.
@issac_blank if you have any info on where the diesel line was connected that would be great.
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