Why is there oil in fuel bowl
what causes oil to back up into the fuel filter bowl?
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Sounds like an injector issue. Here’s the forum on the issue:
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It's a 7.3L correct? I've seen many times and you need to replace ur fuel injector o' rings. The injectors have separate sections that get fuel pressure or high pressure oil. Those sections are sealed from each other to the cyl head where the galleys are for the fuel pressure to travel and high pressure oil to travel as well. Over time they get brittle and hard so the oring fails and the higher pressure oil will pressurize the lower pressure fuel area which pushes the oil into the fuel part of the injector and any unused fuel is then returned to the fuel tank where it's picked up pressurized by the pump then its sent threw the filter housing and into the fuel galley ports of the cyl head. So chances are ur tank is full of engine oil so check ur oil level too.
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I just replaced all the O-rings on all eight injectors a couple weeks ago was riding down the road and it act like it run if you want to die then I got oil in my fuel filter housing you think some O-rings were defective
Just happened to me,can't figure it out,replaced injectors and cups,still doing it,2 1/2 gallons of oil in 20 miles
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1999 Ford F-350 V10 6.8 l a lot of gas in my oil like 1 gallon to 5 gallons 1 gallon gas to 5 gallons oil why
- de Will Perry
I have the same problem but I just replaced all the O-rings on all eight injectors so what could be the problem
- de Jeff