I have a 2000 camaro with "free mod" ram air and a K&N filter. . . the car misfires when/after it is driven in the rain(snow) and last oil change I found a yellow curdeled milk looking residue under the oil cap. I'm assuming its getting moisture through the intake. . . ? Anyone else ever have this prob? Suggestions?

 

I know you live in Texas but has it been cold there lately? The milky residue under your oil cap is likely condensation from short trips. If you take your car on a highway drive it will likely burn off and go away. Other cause could be a leaky head gasket.

The misfire sounds like something is getting wet in the rain (plug wires/coils?) and causing your misfire. I dont think the two are related.

 

Your K&N spray oil could be reactivating when it rains and then blowing onto the MAF, making your engine run poorly. I also suggest getting rid of the K&N filter, its a complete joke really.

You might need a new PCV valve, it could be sticking closed and not pulling moisture out of your crankcase. And the short drives as "chris" said could also cause that milky looking crap to form under the oil cap.

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Your K&N spray oil could be reactivating when it rains and then blowing onto the MAF, making your engine run poorly. I also suggest getting rid of the K&N filter, its a complete joke really.

You might need a new PCV valve, it could be sticking closed and not pulling moisture out of your crankcase. And the short drives as "chris" said could also cause that milky looking crap to form under the oil cap._________________________-----------

how could the k&n filter oil reactivate? maybe he had water splash onto his coils or plug wires. blaming k&n is like obama blaming bush for everything.

 

When I last had my oil changed (2 weeks ago) it looked normal except for the yellow milk-like residue under the cap. Now the oil on the dipstick is kinda yellow.

I've had the plugs and wires all replaced and a full tune-up btw. Also, I've sprayed water on each coil, trying to get it to miss, but it didn't. The misfire is random cylinders. . .

 

Any oil based liquid that comes out wet and NEEDS TO DRY....can be wet again after its dry and it will run off. An engine will have absolutely NO PROBLEM sucking wet oil off the K&N filter mesh. People have been having dirty MAF issues for a long time, and almost e very one of those people have a K&N filter.

And for the record: Obama blames Bush for everything because he's a ghetto trash piece of **** socialist that sucks *** and needs someone to blame.

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lol. i have been using k&n filters for over 20 yrs with no problems. granted i dont go through puddles or at least i try to avoid them. if he had that much water get through i dont think it would have mattered if it was a paper or k&n. i have never over oiled my filter where it would cause the oil to bleed into the maf or throttle body.

 

are all your wire connections tight and moisture free? try spraying around the computer, towards the windshield. try to simulate the rain by not soaking it in just let your nozzle spray the area's. or if you really think it is your filter try a paper one.

 

I drove about 20 miles in the snow while it was comming down and yeah it's gotten into the teens a couple times this winter.

 

I think the residue is just moisture forming under your oil cap. Like I said, take it for a long drive and it will probably burn off. If the oil on the dipstick looks milky though you probably have head gasket problems. If you want you can get a UOA (used oil analysis) and find out if there is antifreeze in your oil.