another suck vacuum leak

flynbrd

Registered User
According to the datalogs my sc had a slight vacuum leak at idle. Causing the motor to run very lean under 1200rpm. Anyway after hosing down the motor with startup spray I was no closer to finding the leak. Oddly the TB was making a very faint whine when wet. So I pulled the TB and began trying to pressure check it.(too forever! lots of tape lol) After several attempts followed by disassembling the TB I discovered the damn O-rings for the butterfly shaft were shot. So now what? you have bad o-ring, its Sunday, holiday weekend. With a touch of insanity and luck the left over o-rings from my a/c rebuild fit perfect on the shaft!!.. Tomorrow I'll find out just how much of a leak I had.
 
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