spark plug weirdness

[lurtch]

Hello All,

  I pulled the plugs after completing two 80 + mile  runs through the Wine Country back roads with my touring group. This was also proof testing for the new Pertronics unit I installed.

The car ran flawlessly the both times, so I was surprised to see this going on with #1 plug.

I am guessing that the #1 injector pintle is not seating completely, or (more likely) the spray pattern is distorted by partial clogging. ( resulting in poor atomization which leads to incomplete combustion ).

Anybody care to weight in on this?

Larry in CA

[mdsalemi]

Larry, looks like an "un-uniform" look to the plugs. #1 looks to be a little fouled. #2 & #3 may be a little hot? 4,5,6 look normal unless I have it all wrong...

Maybe you should find someone with one of those injector testers and see how they all shake out!

[Charles 230SL]

..I am guessing that the #1 injector pintle is not seating completely, or (more likely) the spray pattern is distorted by partial clogging (resulting in poor atomization which leads to incomplete combustion)..

I agree Larry, #1 is definitely a bit rich and my first suspect would be the injector. One of those injector testers/cleaners Michael mentioned would come in handy right now.