Petrol in the engine case.
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Petrol in the engine case.
Hi I'm new on here so hello everyone
I have a 2l cu Aircooled t25. It was parked for 14 years. I had it trailered to my yard and managed to get it running easily. I have since rebuilt the carbs which needed a new float as one had split. The van starts if I give it throttle but there is both blue and black smoke! It runs then dies. I've done all the service items but there is now large quantities of petrol getting Into the oil. I would be grateful for any advise. I've built a 1600 for my bay window so not scared to get tucked into a bit of engine work!
I have a 2l cu Aircooled t25. It was parked for 14 years. I had it trailered to my yard and managed to get it running easily. I have since rebuilt the carbs which needed a new float as one had split. The van starts if I give it throttle but there is both blue and black smoke! It runs then dies. I've done all the service items but there is now large quantities of petrol getting Into the oil. I would be grateful for any advise. I've built a 1600 for my bay window so not scared to get tucked into a bit of engine work!
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Re: Petrol in the engine case.
A split fuel pump diaphragm would be my first suspicion
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Re: Petrol in the engine case.
What carbs are you running and what fuel pump ?
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Re: Petrol in the engine case.
Running original solex 32-34 pdsit-2 and electric fuel pump
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Re: Petrol in the engine case.
I did do a carb rebuild
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Re: Petrol in the engine case.
Have you got a fuel pressure regulator?
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Re: Petrol in the engine case.
Yes I have fitted a filter king with gauge. I have bypassed at the moment to check the flow of petrol. Plenty of that. What is the correct psi?
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Re: Petrol in the engine case.
uniqueinteriors wrote: ↑27 Jan 2024, 08:00 Yes I have fitted a filter king with gauge. I have bypassed at the moment to check the flow of petrol. Plenty of that. What is the correct psi?
Of hand it’s 2.5 psi, but I would need to double check I remembered right
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Re: Petrol in the engine case.
Could be float chamber too full. Might be caused by using a gasket under the float valve that is too thin. Most kits have a selection of thicknesses, well, three anyway.
1982 Holdsworth poptop. 2L CU Aircooled.
1982 Danbury tintop Caravelle. 2L CU Aircooled.
1982 Danbury tintop Caravelle. 2L CU Aircooled.
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Re: Petrol in the engine case.
Thanks for all the replies so far appreciated it. So I've been advised by my mate who is a mechanic to go back to a mechanical fuel pump to eliminate the electric fuel pump as that's the way vw intended it to be!
https://youtube.com/shorts/IQ2pBGMW7c4? ... Zjyk6swUBV
https://youtu.be/AaXaLk0QD6U?feature=shared
https://youtube.com/shorts/IQ2pBGMW7c4? ... Zjyk6swUBV
https://youtu.be/AaXaLk0QD6U?feature=shared
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Re: Petrol in the engine case.
Steve
tel / txt O7947-137911
________________
1989 2.1LpgWBX HiTop Leisuredrive Camper
1988 2.1 Caravelle TS TinTop Camper
tel / txt O7947-137911
________________
1989 2.1LpgWBX HiTop Leisuredrive Camper
1988 2.1 Caravelle TS TinTop Camper
Re: Petrol in the engine case.
I had this problem many years ago, had the standard vw set up for the CU engine.
1992 red lle 2.2 subaru 1990 rhd caravelle 2.2 subaru 1986 california import vanagon
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Re: Petrol in the engine case.
How did you resolve it?
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Re: Petrol in the engine case.
uniqueinteriors wrote: ↑28 Jan 2024, 09:02 Thanks for all the replies so far appreciated it. So I've been advised by my mate who is a mechanic to go back to a mechanical fuel pump to eliminate the electric fuel pump as that's the way vw intended it to be!
https://youtube.com/shorts/IQ2pBGMW7c4? ... Zjyk6swUBV
https://youtu.be/AaXaLk0QD6U?feature=shared
If the fuel pressure is to high it will push past the needle valves and fill the sump with fuel , fuel pressure regulator will sort it , an original mechanical fuel pump is the ideal setup but finding one maybe an issue
Re: Petrol in the engine case.
It happened almost 30 years ago and cant remember if i changed the pump, the fuel got in and raised the oil level, this happened shortly after an oil change and i thought that i overfilled the oil so drain it down but it ended up to low and thin and a circlip came out of position on one of the hydraulic lifters and took a little trip inside the engine with a loud noise ! I was told it was the carbs but i got another engine and used the carbs from the damaged engine and had no problems .
1992 red lle 2.2 subaru 1990 rhd caravelle 2.2 subaru 1986 california import vanagon