kxrida2000

iTrader: (12)

I have a Turbo swapped 2.2 and my vac is at like 17 at idle Wat all could cause this

EcoTecDriver

A leak, check your hoses and such, or perhaps your throttle is open when it shouldnt be, thats what im dealing with on my m62 powered l61

ItalianJoe1

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

kxrida2000

iTrader: (12)

Compression is perfect but at idle it stalls and would be impossible to drive...also mu bov bleeds off at like 2k rpm

Bika

iTrader: (3)

either a leak in a vac hose, or you are leaking compression off the rings / valve seals.
But 17 is not bad for vacuum.

Domkk333

could it have anything to do with low compression style pistons?

EcoTecDriver

You dont have a leak @ 17, is what they are saying^^^^

kxrida2000

iTrader: (12)

My bov will not open normally could this be due to a faulty bov? If I hold a vac booster to it and pump it to like 20 the bov will open? Any ideas

EcoTecDriver

Im not familiar with turbo setups sorry, free bump

Jn2

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...

06_ion2

I see -14 but I think my motor's rings are fucked.

kxrida2000

iTrader: (12)

what is the most effective way to do a leak down lest on my whole system? engine a tdc and how do i actually pressurize it?

BLAZIN07SS

iTrader: (7)

what bov do you have?

kxrida2000

iTrader: (12)

The one that came with the zzp Turbo kit like a knockoff tial

BLAZIN07SS

iTrader: (7)

might have the wrong spring in it

kxrida2000

iTrader: (12)

My buddy has a spare hks should I try to use that for now as temporary or should I try a different spring

06_ion2

Mine works just fine on my car.

Stamina

Man, when I first read the title, I thought you were saying WOT causes low vacuum. I was like, well.... yeah...

BLAZIN07SS

iTrader: (7)

could try a different spring first. you can use tial parts in that zzp knock off. you can use a -9psi spring if it idles at 17inHg of vacuum

kxrida2000

iTrader: (12)

OK man thanks a lot also any ideas on why my car is so rich at idle...would not have a return fuel setup cause this issue because after 2000 rpm the car runs flawless also when I Rev the car when it comes back down it dies

Haha I'm not that dumb but ya this car Is driving me insane

BLAZIN07SS

iTrader: (7)

so you have a return style fuel system? what is your base pressure set at?

kxrida2000

iTrader: (12)

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

originaladrian

pretty sure he has a returnless setup

06_ion2

Email Ryan?

kxrida2000

iTrader: (12)

He wont answer no one at zzp will