RotorJoe

Well, While my car has been down I started tearing into things that needed to be done.

I got to the spark plugs and this is the second time that I have changed them (since the new motor, 10,000 miles on new motor) and noticed the same thing. My front rotors plugs were fouled very bad. Rears were as expected, not fouled.

I then checked spark and from what I can tell all the plugs fire and have the same amount of spark. Nice blue one dancing around. I did this with new plugs, my current/old plug wires and grounded them out to the chassis while I sat inside and cranked the motor. So I don't think its my plugs, wires and coils. I think those are all ok from what I can tell and just did.

I replaced my primary injectors (550s) with new ones when the motor went in. Although my old modified 850's to 1300s were not replaced and have about 20,000 miles on them. And I did not have them flow tested or serviced, my mistake.

So I guess the question is, What can cause one rotor to foul plugs and the other one not?


I've searched a bit and found that one of my injectors (front rotors) could be leaking causing an overly rich mixture in the front rotor. So I thinking maybe my 1300s need replacing. I'll pulll then and send them out for service to be sure.

As I was searching I found some threads that stated the oil control rings could be going out and this would casue larger then normal amounts of oil into that rotor.

I also have a touch of oil leaking from somewhere near my oil metering bolts so while I'm getting the injectors looked at I'll track down the leak.

Another question is, could the OMP be causing this in some way shape or form?

This weekend I'm going to do some carbon cleaning to the motor (because I run a touch rich and didn't have a wastegate on for some time, so no boost and no hard driving to clean things out) and run a compression test. When I parked it it flooded so I'm also over coming that at the moment before I run a compression test.



The last time I checked compression was about 5000 miles ago and I saw three even pulses around 110 on the front and rear. So I hoping I see the same thing when I check it again this weekend after the deflooding and carbon cleaning.


Let me know what you guys think,
Thanks for your time,
Joe

Cgotto6

iTrader: (8)

If your gonna get your injectors sent out, I would just take them to wichhunter. Hes local and a real cool guy. He does great work too. I got some injectors cleaned by him recently and they turned out great. Hes real interesting to talk too. If you go through him, have him show you his stuff. Its pretty sweet.

Oh, and if your injectors are needing replaced, Ive got a set of stockers that I would let go real cheap...They just need cleaning. And in your case, the secondarys would need to be bored and such...

RotorJoe

Yeah, I get the injectors serviced and cleaned. I guess I'm hoping that my front secondary injector is the problem. I was going to go to wichhunter, I've heard great things about them and they are right in my back yard.

If thats the case I'll buy a new secondary fuel rail and bump those up to the 1600s. I need more fuel in the long run anyways.

But along with checking injectors I'll buy new plug wires and test all my coils.

Other then that I'm not sure what else it could be.

Thanks for you time and input,
Joe