I performed a swap to an H22A from my old H22A4. (Turns out I probably could have just done the rings on #4 and #1... but it was fun, so why not?)

I'm now seeing a misfire code on cylinder #1 every now and then.

I've got good compression numbers (1:255,2:258,3:260,4:255) and a leak down test shows every cylinder is at least 95% or better (5% loss or less...).

I cleaned the cold idle valve with crab cleaner shortly before I did the swap.

I've repalced injector #1...

I've adjusted the valves... and used .172mm across the board as I don't have a good set of feeler gauges. (I adjusted the valves to this spec after I noticed the misfire...)

I'm not positive, but only tend to see the code thrown when my foot is off the accelerator in the low RPM ranges... (Ususally coming down from higher RPMs or in low RPMs in 5th gear...)

What would cause a misfire only in #1??

I'm at a loss...

Gerhard

 

Dude, I posted a response in your PO thread, so did Todd.

 

Saw it!.. replied... posted in both because the other can be slow...