Mechanics

#1 CYLINDER SPARK PLUG IS OIL SOAKED AND CAUSING MISFIRE. WHAT COULD CAUSE THIS?

1999 Pontiac Sunfire • 107,000 miles

1. Checked compression, #1 cyl. 200-205 psi, the other 3 were all 210 psi. -Ok
2. Do not see coolant in oil.
3. Check coolant reservoir open and cranked. Did not see and bubbles come out.
4. Listened for all fuel injector clicking-ok.
5. Removed injectors and ensured they functioned properly by pressurizing each and running carb cleaner through them.-All ok.
6. All injectors read 12.6 ohms.
7. Could it be the valve stem seals? Is there a way to check without removing cam blocks?



removed and checked all
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Mpsadowski@aol.com
October 21, 2011.




I forgot to mention that I did pull the tower off and checked for spark at each plug to ensure all plugs were firing.
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Tiny
Mpsadowski@aol.com
Oct 21, 2011.
Could be a valve guides/stems/seals-the engine will emit blue smoke when 1st started then vanish is this happening?

Tiny
Rasmataz
Oct 26, 2011.
I don't know. Right now I have things disassembled with the fuel rail and injectors removed.

Tiny
Mpsadowski@aol.com
Oct 26, 2011.

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