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Discussion Starter #1 (Edited)
i own a 01 929 and recently the idle its been runing rough and after a one or two minutes stalls. i start it again and it does it well but the idle still rough. i though the problem was the pc so i took it off but still. i found a similar post and the guy says to pull off the hose from the fuel pressure regulator and if any fuel comes out its a bad regulator but theres is no fuel coming out but (again) when i took off the hose the idle just went right, put the hose again into the regulator and the idle went bananas. its a bad fuel pressure regulator? if it is, this guy says that it should have fuel coming out, but theres none.
 

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I say start trouble shooting with the easy stuff first. Are the fuel lines pinched causing resrtricted fuel flow? Is your 929 a Cali Model?
 

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Discussion Starter #4
it is a cali model and theres no pinched fuel lines. could it be the fuel filter?
the strange thing is when i pull off the hose fron the pressure regulator the idle comes back to normal.
 

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Service Manual says:

1. Intake Air Leak
2. Fuel Contaminated/deteriorted
3. Pinched or clogged fuel tube
4. Idle speed misadjusted
5. Starter Vave synchronization misadjusted

We know it's not #3, so do the process of elimination. Hope this helps. Good luck.
 

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Discussion Starter #6
ok so the problem was that somehow one of the spark cables went loose so i was running on 3 cyl. but the idle still like 10% rough, so im gonna do the started valve sync. :eek:
 
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