Posted by Kevin (FL) on August 16, 2008 at 08:01:47 from (70.149.213.13):
I just had the injection pump changed out by a local shop here in the FL panhandle. Engine runs good with no more codes. Wastegate solenoid & oil pressure sending unit also changed. Here's the situation: The engine has to spin over for about 3-5 seconds before it will start. I believe the timing is retarded somewhat, causing the slow "light-off". For the life of this vehicle ('95 C2500 Suburban) and with multiple injection pumps replaced under warranty, the engine has always fired up on the first compression cylinder while cranking. Now it almost seems to not want to start. Even when we brought the vehicle in for the work (on a roll-back truck) I cranked it up to drive it off the truck and it started on the first instant of cranking. Before the repair, the engine would shut down intermittently while driving and we had exhausted all the usual culprits (air in system, lift pump, PMD, filter etc.) as to why. I've already called the shop and the assistant manager said he could reset the timing. (He also agreed that the timing error would cause the problem with slow starting.) So my first question is do you agreed with the timing issue or could it be something else? 2nd question--will they have to remove the pump to reset the timing or can this be done through the PMD? I plan to bring the vehicle back on Monday to get it checked out and I expect the shop owner will resist doing the job over. Thanks in advance for your help.
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