Hi all,
I have recently acquired a 90 c1500 with the 5.7 in it. It had been sitting in a partially open garage for 10-15 years with no one touching it. Once I got it home I have replaced the ICM, full tune up, IAC, rebuilt the throttle body, 2 rebuilt or remanned injectors, siphoned out old fuel and put new in, had a new fuel filter but currently not using one to try and run it. Will be replacing computer today as I have not another clue what could be wrong. The truck will not idle and if it “runs” it only does so for a few seconds and at maybe 200 rpm at best. I have also dumped fuel down the throttle body while trying to start it to only get the same thing or a backfire/fire. Sounds like us is missing a few cylinders. I kept thinking it was timing as I replaced the pickup coil but so far that hasn’t seemed to be the issue. It also has no throttle response. Before I messed with setting the distributor right I had it set somehow to where it would start up, idle like a top for a max of 2 seconds, and then die. But would stay running with pretty much any throttle. Any help is much appreciated thanks!
I have recently acquired a 90 c1500 with the 5.7 in it. It had been sitting in a partially open garage for 10-15 years with no one touching it. Once I got it home I have replaced the ICM, full tune up, IAC, rebuilt the throttle body, 2 rebuilt or remanned injectors, siphoned out old fuel and put new in, had a new fuel filter but currently not using one to try and run it. Will be replacing computer today as I have not another clue what could be wrong. The truck will not idle and if it “runs” it only does so for a few seconds and at maybe 200 rpm at best. I have also dumped fuel down the throttle body while trying to start it to only get the same thing or a backfire/fire. Sounds like us is missing a few cylinders. I kept thinking it was timing as I replaced the pickup coil but so far that hasn’t seemed to be the issue. It also has no throttle response. Before I messed with setting the distributor right I had it set somehow to where it would start up, idle like a top for a max of 2 seconds, and then die. But would stay running with pretty much any throttle. Any help is much appreciated thanks!