missing around 2k rpm

Wes Lewis · May 17, 2012

Bump, got a different set if injectors today. And used a laser thermometer to watch the exhaust temps on the cylinders.

One on the right bank Was slow to heat up, didn't get good readings off the left bank

It just seems like when it's revved it can't fuel hard enough.

Wes Lewis · May 20, 2012

Swapped out 4 injectors with other used ones. No change. I tried unplugging each injector and they all did the same thing.

I noticed the oil pressure gauge twitching just slightly after 1500 rpm, maybe the oil pick up is clogged? The pan does leak slightly.

Anyone have any other idea? I'm puzzled

Wes Lewis · May 21, 2012

http://www.youtube.com/watch?v=xl9qXwvK7cw&feature=youtube_gdata_player

Another video of what's happening

usramc · Jul 31, 2012

Ever figure it out? Mine does it too but only under load in the higher gears. Not quite as bad though, It will work itself out if I ease through it. I've put new hpop, ipr, icp, fuel pump, fuel bowl orings, uvch's, and cps. no luck yet.

Wes Lewis · Jul 31, 2012

No luck on anything yet, got the motor swapped into the other truck and it's still the same, when it's in gear inter wot it will rev to 3k then drop to 2500 and rev back up.

Got an AE now and trying to figure it out,

Thinking hpop, turbo, or PCM