"Wet" plug?

[TType85]

I had a timing cover issue an have the front of the motor apart in the car. I pulled the plugs out and found this:



Plug on the right is from #1, plug on the left is from #2. All except #1 look like #2. The plug looks wet, the car has not been run for over a month so it's not fuel. I can see down the plug hole and the top of the piston looks clean. This car had no water in the oil and no bubbling like it had a blown HG.

Anything else that can cause this?

 

[Chuck Leeper]

Can't tell much from that pic....

 

[TType85]

The threads are wet, could be oil wicked down as I saw a little bit of oil near the plug but not much. The center electrode looks wet compared to the other 5.

 

[mikestertwo]

That cylinder looks like it is using oil. Could be coming from anywhere...valve guide, rings, ect.

 

[TType85]

Closer look:

 

[TType85]

That cylinder looks like it is using oil. Could be coming from anywhere...valve guide, rings, ect.

The engine was rebuilt probably 15-20K miles ago, heads were done too with new guides. I have the pan off so I will take a look to see what I can see of the bore of cyl #1.

 

[Chuck Leeper]

Time for a leakdown and a compression test...

 

[TType85]

Time for a leakdown and a compression test...

Leak down tester is on the way....

 

[Chuck Leeper]

The other plug looks to have been subjected to a tuning issue. The other 4 look like the plug on the left?? Have you tried other plugs? What is the NGK heat range you are showing?

 

[TType85]

The other plug looks to have been subjected to a tuning issue. The other 4 look like the plug on the left?? Have you tried other plugs? What is the NGK heat range you are showing?

The other 4 plugs look dry like the other one. These are NGK UR5's. I have new plugs to go back in. Other than a ticking from the motor which I think was the broken cam button I found the car was running great. Boost was set at 15#. I had to pull the timing cover and pan because the little set screw in the cover fell in to the motor.

 

[Chuck Leeper]

" I had to pull the timing cover and pan because the little set screw in the cover fell in to the motor. " Common problem w/ the chinese covers...
JMO, the rest of the plugs don't look to be burning very clean.....