Conversation Between Grand_hustle17 and AKA_04

Hi,

I have been reading up on multi-cylinder misfires and came across one of your posts. You asked if the misfire goes away after a certain RPM and mentioned a loose 02 sensor wire. I had to replace on of the heads on my engine and after startup cylinders 1 & 3 were not firing at all. Didn't know it but this dumped fuel into my precat and precat dust destroyed my rings... which I've replaced and I hollowed out my precats just to be safe. I still have the 1&3 cylinders not firing at low RPM's. At idle it's not bad enough to trigger the flashing CEL light. Anything above idle and up to about 3k RPM and the CEL flashes. Over 3k the CEL stops flashing and disappears after a few seconds. Do you have any brainy ideas sir? I'm thinking varnished fuel injectors since they sat out for 4 months while I replaced the head... long story there. Any thoughts would be helpful.