Im dealing with a 2006 gmc vin code D. Before I took this side job the shop previously replaced the flex lines on the frame rail before the lines go up the side of the engine, then injection pump replaced with a gm reman pump, then injectors were replaced with aftermarket injectors and a napa fuel filter. Then I decided I could give this a go and replaced the napa filter with an ac deco filter, performed the bottle test for the fprv and didn't get a drop of fuel, so I decided to get a fads Dmax lift pump which builds and holds 6psi and drops to maybe 4psi while under a load, then I measured return flow rates on the injectors and found 6 of 8 injectors returning to much fuel. can build and hold 26,000psi at idle. Code sets when 60% throttle is achieved and only builds 19,500 when at 60% throttle. Fuel temps are 136 F. not sure where to go from here. HELP PLEASE.
lbz p0087 help!!!
- Thread starter tanlly
- Start date
I keep forgetting to add things. the high return flow rates were from the aftermarket injectors. I just finished replacing the bad injectors with gm reman injectors today and code still sets. sorry my bad
