I have a 2004 Chevy ecsb lb7. Has 4 in exhaust, boost increase valve, air intake heater delete, S&B intake, and no programmer or tunes. I bought the truck almost a year ago. When I bought it it had high balance rates and a slight injector knock... I tried the GM upper engine cleaner trick to see if that would help until I had money for injectors. Well -- it didn't help and ever since I cleaned the injectors it will start and run fine on cold start but when it gets up to temp and you shut it off and start back up it will not rev past 1500rpm (warm/ hot start) -- it shakes and seems like it is missing. If you loosen the bleeder screw the give it a couple pumps a little bit of air comes out and it will be okay until you shut it off.
Over the past year, trying to chase this problem down, I have replaced the INJECTORS, ALL INJECTOR LINES, ALL THE RUBBER LINES ON THE ENGINE, CP3, FUEL FILTER HEAD, METAL LINES FROM TANK TO ENGINE, and added an Air Dog 150. No visual fuel leaks anywhere and no fuel in oil.
I'm lost and frustrated, any help would be appreciated. Thanks
Over the past year, trying to chase this problem down, I have replaced the INJECTORS, ALL INJECTOR LINES, ALL THE RUBBER LINES ON THE ENGINE, CP3, FUEL FILTER HEAD, METAL LINES FROM TANK TO ENGINE, and added an Air Dog 150. No visual fuel leaks anywhere and no fuel in oil.
I'm lost and frustrated, any help would be appreciated. Thanks
