Smoke Test Result Question

[Spetrow]

Smoke testing my 3.2 after i did intake gaskets, fuel lines and clutch. I tested at the crank case breather due to i was concerned about left chain cover sealing. I found either the paper gasket 939-105-19703 or the Oring 999-701-467-40 leaking on #1 and minor on #4. Engine has always exhibited no rpm drop when removing the oil cap. Do i open it back up and install new Oring or both? Would this cause a vacuum leak? No major oil drips. 130,000 miles on the 3.2. You can see the location where the smoke is coming from after i blew on it. Ok to leave as is and wait till i do the guides? its an occasional driver - less than 2K miles a year. https://app.box.com/s/cv5e5eilexy0yxk1kgffor9pa77hcoxj

[mike sampsel]

If you can screw the idle adjustment screw all the way in and the engine dies, then press on to something other than a vacuum leak, according to the Porsche CIS troubleshooting guide.

Mine has no smoke leaks, and only changes idle a small amount when I pull the oil cap. You should be able to add some Dow Corning 111 to the o ring on your leak, might fix that one

I guess your 3.2 troubleshooting might be different than the cis though.

[RobFrost]

Check your idle switch is engaging. The more common vacuum leaks are perished hoses and hoses off at the rear of the throttle body. Check the rubber elbows especially near the oil filler by flexing them to see if they're cracked. Also the pipes to the carbon canister.

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