olaHalo

Just this morning i noticed my car seemed a little off.
Checked under the hood and didnt notice anything.
I take it out to test it and this is what happens
-the car cannot hit full boost. it builds boost a little slower than normal, but will stop at around 5 psi. I have an 8lb spring in my wastegate and no boost controller.
-my boost gauge reads a little under -20 at idle (not sure if thats related)
-the wastegate isnt opening. or it isnt giving me that open dump sound anymore, obviously because im not hitting 8psi, but then why does the boost stop?
-under the hood, i dont notice any leaks, and the BOV seems to be closes all the way.

any suggestions?

chad_buckwalter

hmmm wastegate diaphram maybe? Check all your vacuum lines see if theres a kink anywhere. see if that helps

enjoithis

x2 check vac lines, is there maybe an exhaust leak between motor and turbo? You may not notice this at idle, only under load, look for black dust around the gaskets. I'm going to say definate exhasut leak.

Troys_tc

x2 I have had an exhaust leak before and built only 1 pound of boost until I figures outthe gasket was fried

SVicksTC

i have a crack in my manifold and still almost build full boost...

Ace83

iTrader: (6)

yeah sounds like a vac/boost leak, check every pipes, couplers, intercooler, vacuum lines, bov, and intake manifold for cracks maybe.. i doubt its an exhaust leak unless its a really huge hole

ippskidder

I think its an exhaust leak.

Check all the vac lines, and couplers.

I think the easy way, is to have some soap and water mix in a spray bottle.

Spray the suspicious areas. Have someone rev the car slightly, and look for soap bubbles.

I think thats the ghetto way of doing it ^^ but it works.

The right way, is with pressurized air, or something like that.

olaHalo

thanks guys
ill check everything out today

tcengel

I actually had an issue like this when the boost source line popped off the back of my boost guage.

chintastictc

intercooler piping???where is your wastegate vacuum source??? but im willing to bet money a coupler is loose

chad_buckwalter

x2

aen

vac leak would cause vacuum to be closer to atmosphere (zero) not negative

it can't be a vac leak only thing i can think of is a major exhaust leak, it wouldn't be spooling as fast, or a intercooler pipe loose on the hot side. that MIGHT cause a small vac leak but might not be noticable, but it WOULD cause boost to leak out

enjoithis

the only time i had a loose pipe on the hot side i blew my pipes apart, and it came with a nice loud POP!

chintastictc

when i first put on my turbo kit it would spool to like 5 psi and wont go any further...so i came to the conclusion that a couple wasnt secured and when i tightened it up more it hit full boost...it probly wont be noticable but just loosen and tighten back every IC pipe and see if it fixes

java09

i think the flux capacitor isnt getting the requided 1.21 jiggawatts of power. theres where i would start.

ippskidder

Maybe you can send one of your engineers over here to the state to fix it java.

^^

java09

i can try but my guys right now are busy with creating flux capacitor stage 1.5.

then its off to the coaters and god knows how long that takes. ;)

ippskidder

roflmao!

java09

hahahhaa

jdubb123

I think i know whats going on. I see this crap happen all the time...... You walk out of your home to take a ride in your car and BAM! "Holy bejesus.. This is gonna be expensive..."
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