Here's the problem. A few weeks ago I got a P0306 error- #6 cylinder misfire. I changed the plugs and discovered that #6 had oil above the threads and seemed to have more gunk on the end than the others.
I let it run for a few weeks (didn't notice any colored smoke or smelly exhaust but I don't drive it, it's my daughters car).
After a few weeks, same problem- Idles choppy at redlights, oil on plug, #6 was dirtier than all other plugs.
I did a compression test and all cylinders were 190-220 psi except #6. It was 270 psi.
Checked fuel injector signal with noid light. It's ok. Checked resistance of ignition coils.
Primary - approx 14 ohms.
Secondary -7-9 K.
Grounded the plug and checked for spark on all. They looked ok, but not fantastic.
I decided to remove the valve cover and when I pulled the oil filler tube off to get it out of the way, I noticed a bit of light goo in the bottom of the filler tube.
Also, my daughter complained that there was intermittent heat and when I removed the coolant reservoir and pulled the heater core lines off, there was no anti freeze in them. I also tried to drain the radiator but nothing came out. Not sure if it's just a clogged petcock or not. Last time it ran, the temp gauge was fine.
I thought my next step would be to check the intake valve seal or intake gasket but now I'm thinking head gasket or warped head. The compression test is throwing me off though.
Where do I go from here?
Thanks very much for your help.
Saturday, April 23rd, 2011 AT 6:40 PM