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i cant figure this out!! my car has like no vaccum (did i spell that right?) at lower rpm's, and bobbles around 500-800rpms, but over 1500... its all good... and runs excellent. my injectors are fine, but it sounds like an air leak, but i cant find it at all!



- i swear.. i want a bumper sticker for my Z that says "fuel injection sucks!"
just ranting...
 

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Hmm, my car has almost the same symtpoms, drives great over 1500-2000 RPMs, but alot of low RPM stumble. Injectors have been changed, vaccum lines traced, and replaced, gas tank and all fuel lines/filters/pumps replaced, timing checked, and it still hesitates/misses at low RPM. I'm interested to see what people say for this.
 

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did you spray carb cleaner all over the vaccum points when the engine was running to see if the idle flucuates?
 

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Low vacuum doesn't mean there is a LEAK!!! A lean or rich fuel mixture will also make the vacuum low as well as mechanical problems. Even the ignition timing has an effect on this. But I guess people will never stop believing low vacuum means there MUST be a leak somewhere...
 
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