Quote:
Originally Posted by DannoXYZ
I doubt intake vacuum-leaks would be severe enough to cause no-start condition though. Would also cause problem with cold-starts as well if it was that large. More likely it would only cause unstable idling warm or cold.
1. I suspect petcock or its vacuum supply. Need to measure things to rule that out.
2. Also have you tried starting with gas-cap open? Cap vent-mod isn't removing screw, but entirely removing one-way valves inside gas-cap.
3. Test for spark as well when you have hot-start issue.
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The petcock is OEM new and I confirmed fuel is flowing with vacuum, just haven't actually measured the pressure. I'll try restarting with the cap open, simple enough check.
I had already planned to test the coils for spark when hot today. Next step will be to double check valve clearances tomorrow to see if perhaps I left them too tight and they're not opening enough when everything is hot and expanded.
Thanks for your suggestions!