Looking for advice here. At first I was getting a 1345 Ckp to Cmp correlation code. I was able to re-set the distributor forward a tooth and got the timing set at +1*. Light is off now but I still had a terrible cold start issue and a very bad stumble and miss at anything more then 10% throttle and more then 2000 rpms. I tested my fuel pressure and gauge was reading 50 idle and 57 open throttle. Also the pressure would bleed off drastically. So yesterday I replaced the pump and filter and now I’m at 52 psi and 60 open throttle.
Cold start went away entirely and pump on time to prime was drastically reduced. I can get the rpm’s up to about 3000 or so before it starts to hesitate and stumble
1. Inspect/Replace the FPR.
2. Check/Replace the spider injectors if needed.
3. Use quality plugs (AC Delco or NGK) with a gap around .045”.
4. Full tune-up: Check all ignition components and filters.
5. Inspect air intake and MAF sensor.
Keep an eye on those symptoms, and don’t hesitate to reach out if you have more questions! Good luck getting everything sorted out!
