well i have been driving on my single turbo for a while now and i noticed today when i backed out that there is a SMALL puddle of oil on the ground. i know it is coming from the oil feed line where it connects to the turbo. i am going to fix this today, that is no big deal. my question is do you guys "and gals" think that this might be causing my high idle? i have searched all over for the cause of my idle being at 2k. i have looked at all the vacuum lines, adjusted the throttle screws, rechecked the lim and uim for a leak. i just cannot source this leak anywhere. i was thinking maybe i didnt tighten the midpipe together enough. any ideas where i should search would be appreciated.





thanks



john

 

i doubt having an oil leak there would cause a high idle. Have u dont the throttle body mod? Has your car always had this high idle? Or did it occur after some mod? Its more than likely a intake leak. hmmmmm, vac leaks would be easy to detect on boosted cars.. But can you make any boost while revving/under no load? If you could u could jsut listen for it...

 

i just finished my single turbo conversion like about three weeks ago. i did not have the high throttle until after i finished my turbo swap. i tried to spray around with some carb cleaner but i never saw or heard a leak anywhere. also it only does it sometimes. more like 8/10 times i drive it it has the high idle, and when it does come back down to normal it has a bouncing idle. about the boost i dont understand what you mean. when i am driving it builds and holds the boost at exactly 13psi where i have it set at. i have never tried to build boost at while sitting still if this is what you mean.

 

That what I mean, just revving the engine. Well what I would do is use a piece of vac hose, or silcone, like 1-2 feet long, hold one end to ur ear and probe with the other, best way to find a vacuum leak. Your cars performance is hurting with a vac leak... Did u mess with the injectors at all?

 

yeah i played with the injectors. i got 1300cc secondaries. i replaced all the o rings and everything looked great when i but it back together. so you think it is a vac leak also huh?? this is what i keep thinking it is but i cant find it anywhere. i will try the hose idea later. thanks for the ideas so far



john

 

you can also pressureize the intake, ie plug the turbo inlet, and blow into the engine, you can hear it that way too



mike

 

Did u replace the grommets/put them back on at all?

 

yup i replaced everything...grommets, orings. filter. made sure everything was really flush before i rebuilt the engine. hmmmm any other ideas?