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Old 01-03-2011, 02:41 PM   #1
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Default Fuel is getting into oil catch can

For the second time after emptying out my oil catch can which was full to the brim! about 99% of the fluid inside of it was fuel while the rest 1% was oil residue.

I know this isnt normal but should i suspect my current set-up?
Its a freshly fully built motor which has only 3k+ miles so far.
running e85
1000cc injectors
walbro 255 FP

Could it be the 1000cc's that are pushing way to much fuel?

Is this something other forum members have encountered before?

Last edited by railz; 01-03-2011 at 03:07 PM.
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Old 01-03-2011, 02:57 PM   #2
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The idea to my problem I THINK is that its the 1000cc's that are pushing way to much fuel?
I was going to give this some though, then I read the choice quote above and decided to mock you instead.
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Old 01-03-2011, 03:06 PM   #3
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Old 01-03-2011, 03:08 PM   #4
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jerk
If there were "soooooo muchhhhhhh fuellllllll" what would your AFR look like?
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Old 01-03-2011, 03:08 PM   #5
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Well...most of the "gunk" that you find in a catch can is condensed fuel and water vapors...not really a lot of pure oil content. Might want to send your oil off for analysis too. Like Hussy says, how are the AFRs? How many miles since you installed it/checked it last? How full was it? How big is the catch can?
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Old 01-03-2011, 03:32 PM   #6
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drain your oil pan and see what's in there too.
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Old 01-03-2011, 04:06 PM   #7
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AFR's are spot on normal. i changed the oil not to long ago but even before the oil change it was doing the same.
The can was full to the top and this was all with less then 100miles of driving. Its as big as a 16oz bottle
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Old 01-03-2011, 04:32 PM   #8
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I get significant ethanol content from the catch can too. Hustler runs 11.5:1 and gets fuel contamination, and we are running afrs closer to 9:1. Expect to change your oil A LOT.
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Old 01-03-2011, 05:29 PM   #9
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I get significant ethanol content from the catch can too. Hustler runs 11.5:1 and gets fuel contamination, and we are running afrs closer to 9:1. Expect to change your oil A LOT.
Got it, thanks

but do you have an idea why we get more e85 contamination vs regular pump/race gas?
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Old 01-03-2011, 10:58 PM   #10
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..seriously? I just told you - we run 20% richer AFRs.
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