I have a MAP 2.3 with FIC 1250 injectors. Motors has 5k mile on it. My car runs fine, but I am getting ready to have the car tuned so I pulled my plugs to make sure everything was ok. This what I had after 300miles.
http://img823.imageshack.us/img823/4...iaimag0226.jpg
I pulled the injectors and each injector looked just like each plug with #3 being the darkest. I cleaned the injectors in Seafoam. They came out like new. I moved injectors 3&4 to 1&2 and 1@2 to 3&4. After 100miles here what I have. Injector 3 was getting black also.
http://img443.imageshack.us/img443/4950/2ndtry.jpg
Any Ideas?

 

I have had that happen on my car, too. More than likely it is due to air distribution into the cylinders. For whatever reason, this particular cylinder is getting a bit LESS air than the other three, which is causing the rich condition in the cylinder.

The only way to know FOR SURE is to measure the EGTs and to do this you would need EGTs in each header tube. If you have a stand alone like AEM in the car, you can fuel trim that individual cylinder back a bit. This is what I have done. Beginning with very small changes. I started by taking out 1% at a time. I would drive the car again for a couple of days and pull the plugs. Then adjust again... I did this for a couple of weeks. Slowly removing fuel and reading the plug. In the end I took out a total of 4% (at 10lbs of boost or more) from one cylinder to get the plug to read the same as the others around it.

 

I think I may have found my issue. I think my coil is bad. I will know more soon.

 

Leakdown test time. oil through the piston ring, sounds like

 

I hope not, but you never know. The car smells like E85 strong. The #3 three is wet like the injector is stuck but its not. I'm thinking it not firing properly. It has a stutter in the idle. Like a plug. I will do a leak down test to see. Before I put the COP on.

 

Just wondering. What would cause a Map motor with 5k to loose oil by the ring?