HELP! Light Throttle Stumble
I've developed a stumble or miss when I'm on the throttle lightly. It will clear up if I step on it. It is really noticeable with the TC locked around 1800 rpm and somewhat noticeable at lower speeds (TC unlocked) and lower RPM's. So far I've replaced my rubber fuel lines, fuel filter, and pre-heater gasket thinking the I possibly had a little air being drawn into the fuel. (I can see a few bubbles right when I crack the injector lines but it will clear up in a few seconds). I also re-installed my 180 injectors and it actually seemed to make the stumble at lower RPM's more noticeable. Boost, EGT's, oil & coolant level are all good. About 2 months ago I did have my timing bumped from stock to 15.5°. I'm thinking (hopeing) that it may have slipped. The TC seems to hold good in lockup so I don't think it's starting to separate. Any ideas?? HELP...
TIA
Paul
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'96 2500 4X4, Auto, 3.54LS, Protorque Extreme, DTT valve body, 370's, TST#4, 4 GSK, Stage 3 HX40/HX35 Hybrid, 16*, AFC Spring Kit, BHAF, DSS, Bilsteins, DEE-ZEE running boards, Pace Edwards Roll Top, BHMF (Big Honkn' Mud Flaps), 4" Turbo to Tail exhaust, No Kitty, 255/85 Kelly Safari M/T, KDP Jigged
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