i already know i'm running pig rich. i get a cloud of black smoke out of my exhaust in mid rpms during boost (pretty much where the AFR is off the charts. Plus i smell the obnoxious gas fumes sometimes during normal trafficing (when coming to a stop i mean). that'll all be taken care of once i get to tuning my parts.blkplge said:oh yea, sorry.
but unburnt fuel would indicate a rich setting, but.........you lose mpg, but it is better than running lean. and if this is the case, you should check into a new o2 sensor or a cat going out.
either way, this is an indication that something needs corrected, unfortuantely, you are pre-obd2, thus making it more difficult to pinpoint the error, spend the money for a smog test....(if you are in a state that does smog) run an emission test...(shops tend to charge a great deal more for test,adjust,smog, possible failure, bigger bill).........and see what the numbers indicate.
not really, the ecu set from the factory runs the car on the rich side. just look at any dyno of a stock mr2, or one with just bolts-ons etc. just about EVERY dyno i've seen has pig rich AFR's.blkplge said:sorry again, but pig rich(unless set by you or a shop)...is an indication of o2/cat related problems.
unless you messed with the afm, if you did, put it back.
taken from this threadbillwot said:Unless you are using more thatn a quart every 1000 miles, don't worry bout tht oil in the pipes.
Maybe I'm blind, but I didn't see the original poster say anything about a quart every 1k miles. Didn't he just say the mechanic said there was oil in the turbo?blkplge said:a quart for every 1k miles is pretty excessive!!!!!!
by any standards.
Excellent job of quick thinking, especially at 16! Oil in the intake tract is normal, but not necessarily good. It is just a by-product of a turbo. Unless you have other symptoms, there is no need to worry about oil in the intake tract.mjrogers23 said:I am 16 and just bought a 91 mr2 and took it in to make sure all is okay. After it was checked the mechanic told me oil is in the turbo and i was quick to think that it should be there. anyone know if this is good or normal.
Also, excellent answer.Driftin_AW said:of course oil in the turbo is entirely normal if the PCV is still plumbed in to the intake. Even if it isn't, a small amount of oil seeps past the seals of the turbo normally. Provided there isn't copious amounts of oil in the turbo/intake and it's not smoking at idle, or using lots of oil, I wouldn't be too alarmed.
it right here.Boz said:1/2 qt between oil changes is kinda vague, refering to qts/mile is better stated. bill and toyota feel that 1qt every 1000 miles is adequate (esp. with how old our cars are). so if you follow the 3000miles rule for oil changes, than that'd be 3 qts of oil between changes.