Re: 1989 4.3 rebuild ran perfect now wont start
sorry, I have points which are brand new. 1989 gm 4.3 262 OMC with points, distributor and ignition coil. The engine started first try after rebuild ( distributor was marked at previous timing setting with a white paint line). It ran strong and started with every crank. Allowed engine to warm up (with flushers on of course). Set timing @ 8* BTDC(it was at seven*btdc before). Ran fine for 45 minutes total ( 8 or 9 five minutes cycles) that I started and stopped. Woke up next day to give a final compression test and do a final check on all connections. However I touched nothing and decided to start it first just cause I wantyed to hear my rebuild thump one more time. After roughly 10 attempts to start and a little starting fluid, I got nothing. I threw on a new coil, points and rotor just cause it is a cheap gamble and the points were shot anyway. Have no spark at coil. I then did all checks mentioned in my second post. Recap - igntion wired correctly double checked, alternator wired correctly, double checked(3 wire). Coil wired with 2 greys and 1 black distributor wire to the negative side. Purple/red and red to the pos side. I have 12.75vdc at both sides of coil(factory wiring). Neutral shift switch makes/ breaks continuity and is properly positioned / not stuck. I have 12.75 vdc at the points. I pulled all coil wires 1 at a time and swapped them out on my truck and used an inline spark tester. All wires passing spark. I was very judgemental of the coil to distributor high tension wire. I wiggled and jiggled to make sure it is not broken inside. I also disconnected the tach wire from the coil and checked for spark again incase tach was bad. Nothing. So i am puzzled, ran like a champ then just quit. Double checked every wiring harness visually, no corrosion to be found. Any wire I was able to isolate showed continuity. I did not check resistance though. It has to be something simple. Thank you everyone in advance for your thoughts and consideration and taking time to respond. Ps, if anyone needs rockers for an 89 4.3 gm I have 4 brand new left over that I don't need. I can drop them in a flat rate usps box if they will help anyone.
