Ok, so I swapped from the stock coils to the OHV coils, I will be putting MSD coils in at some point, but the ohv's were free. So with that being said, I'm having a couple problems after the swap.
1. Leaning out like crazy in the upper RPM range.
2. Misfire, again in the upper RPM range.
The coils were the ONLY thing that was changed. Spark plug gap is .040. I'm at a loss at this point. Coils test out fine, and wires are brand new. Any suggestions? I have a feeling once the misfire is corrected so shall the afr. One thought is I'm all of a sudden getting fuel cut. I don't know if I agree with this seeing as it was fine before the swap. Going back to the stock coils to see if the problem still exists might be an option that I try tonight. The slight leaning trend existed before the coil swap but was never as significant as it is now. Before I would come into boost w/ an afr of about 11.7 and hold it all the way to 6300 or so, and the leanest it would get then was 12.1 or so. Now it starts to lean out well before 6000 and I get out of it before it goes any leaner than 12.2 or so. Any ideas...
---------------------------------------------------
4 Cams...32 Valves...5 Liters...This Could Get Fun!
missfire may be the plug gap. My car does that if i have more the .030" gap.
mitdr774 wrote:missfire may be the plug gap. My car does that if i have more the .030" gap.
Another thing I've not thought of that was pointed out to me earlier, the tempature has dropped since the last time I drove the car. Although I did not experience these issues during the tuning sessions that I had up in WI, where the temprature was roughly the same, it could be possible that the colder more dense air is causing the lean condition, hence a misfire...hmmmmm...
Any other eco's got a 75mm black hole for a t.b. and 3" intake runners?
---------------------------------------------------
4 Cams...32 Valves...5 Liters...This Could Get Fun!
