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Misfire already

Started by MikeB, December 27, 2012, 01:12:38 AM

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MikeB

So the new rich tune let the real problem come out of the woodwork. I'm still getting a misfire on #3, and the logs show that the bank 1 is not hitting AFR target. Also, since these run in CL at WOT I logged STFT's and it shows bank 1 at 15-19% added fuel correction. So I have one cylinder running lean and the other 2 running rich. Here is my plan to fix this:

1. Replace injector on #3
2. Seafoam the motor (through a vacuum port on the intake) and 
   change the oil right after.
3. Put seafoam in the gas for a follow up cleaning to the fuel system.
4. Repeat step 2 every 20K miles.
5. Put seafoam in the tank every 5K miles.

That should hopefully keep the motor clean.

MikeB

Step 1 done. Misfire fixed. Will seafoam it out later today.