wat could cause low vaccum
#3
Senior Member
iTrader: (10)
That's not that far off.
Normally, a drop in vacuum is a piston sealing issue or a IAC/TB problem. After working with a ZZP 2.4L turbo kit, I found the car wasn't too crazy about the blow-through MAF and it gave me weird idle vac until the car settled down sometimes, TB just kept moving around.
If you're worried, do a compression test. Otherwise, don't worry about it
Normally, a drop in vacuum is a piston sealing issue or a IAC/TB problem. After working with a ZZP 2.4L turbo kit, I found the car wasn't too crazy about the blow-through MAF and it gave me weird idle vac until the car settled down sometimes, TB just kept moving around.
If you're worried, do a compression test. Otherwise, don't worry about it
#4
That's not that far off.
Normally, a drop in vacuum is a piston sealing issue or a IAC/TB problem. After working with a ZZP 2.4L turbo kit, I found the car wasn't too crazy about the blow-through MAF and it gave me weird idle vac until the car settled down sometimes, TB just kept moving around.
If you're worried, do a compression test. Otherwise, don't worry about it
Normally, a drop in vacuum is a piston sealing issue or a IAC/TB problem. After working with a ZZP 2.4L turbo kit, I found the car wasn't too crazy about the blow-through MAF and it gave me weird idle vac until the car settled down sometimes, TB just kept moving around.
If you're worried, do a compression test. Otherwise, don't worry about it
#10
Senior Member
iTrader: (1)
dont know if it helps bc im sc'd and ur tc's...but my idle is -20@idle, and -17/16 @idle with the a/c on...turn the ac off and it will go to -20...during decelarration while in gear i will be -24...just a boost leak down test to see if your leaking anywhere, be sure to put the engine in TDC so all valves are closed...
#12
dont know if it helps bc im sc'd and ur tc's...but my idle is -20@idle, and -17/16 @idle with the a/c on...turn the ac off and it will go to -20...during decelarration while in gear i will be -24...just a boost leak down test to see if your leaking anywhere, be sure to put the engine in TDC so all valves are closed...
#20
Haha I'm not that dumb but ya this car Is driving me insane
Last edited by kxrida2000; 08-11-2010 at 10:40 AM. Reason: Automerged Doublepost
#22
Well here is the thing...I have zzp boost reference fuel system an I have it hooked up but I looked at my regulator in my tank and I cant take the ball an spring out like zzp say cause my regulator is a sealed unit...so its not really doing anything is IT? and could this be causing the issue with rough idle and way too much fuel at idle
#24
Senior Member
Well here is the thing...I have zzp boost reference fuel system an I have it hooked up but I looked at my regulator in my tank and I cant take the ball an spring out like zzp say cause my regulator is a sealed unit...so its not really doing anything is IT? and could this be causing the issue with rough idle and way too much fuel at idle