Fuel leak sources
Fuel leak sources
1987 Mazda B2200 "outlaw" **planning phase** Chevy 283, Power Pack heads, Edelbrock carb and intake, turbo 350 trans
1985 Mercedes 300D stock for now
Got a quick q for you guys. After a nice long drive in my 85, I smell diesel fumes around the hood of my car. Aside from the fuel lines and filters, are there any other potential sources for a fuel leak? Like a gasket on the pump or something? I know that I need new fuel return lines, and an planning on getting Greazzer's rebuilt injectors sometime after tax returns.
1987 Mazda B2200 "outlaw" **planning phase** Chevy 283, Power Pack heads, Edelbrock carb and intake, turbo 350 trans
1985 Mercedes 300D stock for now
My guess is just the injector return lines are leaking. Extremely common problem.
No, you have to replace the primer pump. It is screwed into the lift pump and sealed to it by a copper washer. Newer style black plastic primers are much better. Btw they are quite inexpensive, less than 10 dollars.
My guess is just the injector return lines are leaking. Extremely common problem.
(11-29-2015, 05:13 PM)Petar No, you have to replace the primer pump. It is screwed into the lift pump and sealed to it by a copper washer. Newer style black plastic primers are much better. Btw they are quite inexpensive, less than 10 dollars.
My guess is just the injector return lines are leaking. Extremely common problem.
Seen leakoff pipes go porous, and seen rubber hoses go porous (but that was on cdi engines with lift pump and quite a bit of positive pressure). On some of the cdi's it wouldnt show visually, just the smell as hot diesel (usually near the high pressure pump) made it smell in the cabin.
Definitely worth checking leakoff pipes. sniff test, or rub and sniff fingers might be necessary if there isnt an actual leak.
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W639 Vito OM606 + 722.6 STD - in progress
Current progress: engine in, gearbox in, bumper bar modified to accept w210 radiator, audi electric fan, very tight squeeze, interior stripped out ready for new seats (w211) and custom dash with w211 clocks controlled by arduino with split fuel gauge covering main tank and auxiliary for Veg Oil ...
- DSL1 ECU for Electronic OM606 Pump (currently fitting wiring)
Next; 722.6 Controller, HX40 with homemade manifold, Air-to-water intercooler, homemade exhaust, MOT.... One day!
(11-29-2015, 05:13 PM)Petar No, you have to replace the primer pump. It is screwed into the lift pump and sealed to it by a copper washer. Newer style black plastic primers are much better. Btw they are quite inexpensive, less than 10 dollars.
My guess is just the injector return lines are leaking. Extremely common problem.
Seen leakoff pipes go porous, and seen rubber hoses go porous (but that was on cdi engines with lift pump and quite a bit of positive pressure). On some of the cdi's it wouldnt show visually, just the smell as hot diesel (usually near the high pressure pump) made it smell in the cabin.
Definitely worth checking leakoff pipes. sniff test, or rub and sniff fingers might be necessary if there isnt an actual leak.
---
W639 Vito OM606 + 722.6 STD - in progress
Current progress: engine in, gearbox in, bumper bar modified to accept w210 radiator, audi electric fan, very tight squeeze, interior stripped out ready for new seats (w211) and custom dash with w211 clocks controlled by arduino with split fuel gauge covering main tank and auxiliary for Veg Oil ...
- DSL1 ECU for Electronic OM606 Pump (currently fitting wiring)
Next; 722.6 Controller, HX40 with homemade manifold, Air-to-water intercooler, homemade exhaust, MOT.... One day!
1987 Mazda B2200 "outlaw" **planning phase** Chevy 283, Power Pack heads, Edelbrock carb and intake, turbo 350 trans
1985 Mercedes 300D stock for now
Hmm, to be honest I never noticed the primer pump on my lift pump, never needed to. So my first project will be to replace the return lines, then the primer pump on the lift pump. Sounds simple enough. Thanks guys!
1987 Mazda B2200 "outlaw" **planning phase** Chevy 283, Power Pack heads, Edelbrock carb and intake, turbo 350 trans
1985 Mercedes 300D stock for now
'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted
It truly is as simple as it looks! Most times you can visually spot clean spots on the engine where the fuel is leaking
'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted
https://www.youtube.com/watch?v=PlB0Uc1qdUk
1992 W201 190D 2.0L and 1971 W108 280SE with OM606, electronic pump and 6 speed manual gearbox.
I had problems with the seals where the injector lines exit the top of the pump. It became quite a significant before I got around to replacing the sealing rings:
https://www.youtube.com/watch?v=PlB0Uc1qdUk
1992 W201 190D 2.0L and 1971 W108 280SE with OM606, electronic pump and 6 speed manual gearbox.
1987 Mazda B2200 "outlaw" **planning phase** Chevy 283, Power Pack heads, Edelbrock carb and intake, turbo 350 trans
1985 Mercedes 300D stock for now
Just an update, replaced the return lines on the injectors (the tiny PIA ones) and the smell was greatly reduced. Still see a small amount of diesel resting on the #2 injector, will monitor for now. Mileage went up a bit as well, so yay!
1987 Mazda B2200 "outlaw" **planning phase** Chevy 283, Power Pack heads, Edelbrock carb and intake, turbo 350 trans
1985 Mercedes 300D stock for now
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