ZR-1 Net Registry Forums - Possible Vacuum Leak?

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KJL	09-25-2019 01:58 PM

Possible Vacuum Leak?

I have a 1995 that runs strong. I noticed the other day when the hood was open that after I turn the car off I heard a hissing sound for a few seconds coming from under the intake (of course....). I don’t recall ever hearing that before. The car doesn’t seem to do it if I start it only for a minute then turn it off. Running the ignition on with engine off vacuum pump test indicates no issues with at least that part of the vacuum system.

lfalzarano

09-25-2019 04:34 PM

Re: Possible Vacuum Leak?

How’s the antifreeze fluid level in the overflow tank?

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KJL	09-26-2019 03:46 PM

Re: Possible Vacuum Leak?

Quote:

Originally Posted by lfalzarano (Post 299085)

How’s the antifreeze fluid level in the overflow tank?

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Good.i realize there are many vacuum lines under there and it could be any of them. I will try and localize using sound and get my bore scope in there to look around. If I have to remove that plenum again, I am locking the secondaries open getting the chip updated and pulling out that rats nest of plastic tubing and hoses. They really should have used hard lines for some of that.

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