WGFV and air leak problems.
brett at cloud9.net
Tue Apr 8 00:31:59 EDT 2003
At 7:29 PM -0700 4/7/03, Shayne wrote:
>I found a bunch of leaking air lines on the back of the motor. Replaced
>them. Spent 2 more hours trying to find another leaking line. The motor
>would not hold a vacuum. I can hear another leak at the back of the head
>but can't find it. I was applying vac to the TVB vac line. I individually
>tested the small three vac lines on the back of the head. Those are the TBV
>line, and if memory serves me right, two heater vac lines. I also tested
>the ISV hoses, the associated intake hoses and anything else I could see. I
>am stumped. Where else can it be leaking?? I can hear it (back lower part
>of the head), but can't find it. Even when testing each line individually.
I developed a major leak on the intake pipe-> throttle body hose last
summer. Tore right at the indented part for the lip on the throttle
I also developed a leak, loud enough to be heard with the engine
idling and hood up, where the hard green ECU line goes underneath the
fuel lines; the fuel lines chaffed a hole right through it.
Lastly, did you double check all the pipe clamps for the ISV etc?
By the way- pressure testing is a lot easier, because among other
things, you can feel the air leaks(and there's a clear change in the
noise when you get your fingers close.) A 1-cup rubbermaid container
and a compressor fitting will do the job nicely- remove the intake
hose off the end of the MAF and insert the bottom of the container,
tighten the clamp, tada! Just be careful not to overpressurize the
system- the ECU pressure sensor could be damaged. Don't go above 1.8
bar indicated(sensor maxxes out at 2). Recruit a friend to watch the
display if necessary.
"They that give up essential liberty to obtain temporary
safety deserve neither liberty nor safety." - Ben Franklin
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