Lt1/383 motor was flooding out on start up, now will no longer start
02-26-2019, 01:51 PM
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Lt1/383 motor was flooding out on start up, now will no longer start Hey, so I could use some help, this is a fairly new build. 95 Z28, The computer was tuned by Solomon. The car was running great, would fire right up and ran strong. After a couple weeks the car would not start when cold, seemed to be flooding out. I would pull the fuse for the fuel pump and crank it until it would try and start, then replace the fuse and it would start right up, run great, and would easily restart when warm. The starter began to fail with all the extra cranking, it was stock and the car is 10.8 to 1. I replaced the starter with a power master mini, and it has no problem cranking, but I have not got the car to start since. It will not even try to fire with the fuel pump disconnected using starter fluid. When you stop cranking it spins backwards and puffs out the intake. Fuel pressure is good, it has spark. The opti is new, I swapped an icm off a buddy’s car to rule that out. It seems like it is not sparking at the correct time but I don’t know how that would be possible or what would cause that. Any ideas would be helpful.
Thanks in advance
Thanks in advance
02-26-2019, 02:26 PM
#2
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Take off your opti, take off the cap and check your rotor screws. Those symptoms sound a lot like the rotor screws backing out, rotor being loose and firing cylinders at will whenever they do fire. Notorious problem. Solution is to use loc-tite on the rotor screws. Search google or here you'll find info.
02-26-2019, 08:34 PM
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Any chance the harness at the top of the opti get wet? If you have an air want just pop the plug out and give it a few blasts to be sure. If you're running an aftermarket harness you might want to start probing around for loose/broken connections. It was easier to repair my stock one than deal with the Chinesium pins breaking connection if you looked at them wrong.
02-27-2019, 02:10 PM
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The opti is dry and new, the connector and wording looks good and in shape, I have been trying to go thought the wording looking for any issues but everything looks to good
