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Old 11-16-2019   #4
FormulaReed
 
Join Date: Jan 2019
Location: Seattle
Posts: 62
Default Re: Runs good cold, dies warm

Update: I replaced the primary fuel pump and it seems to have fixed it! I let it warm up and it ran fine, went for a little drive and it ran really good. Much better than I have ever had it running. I think that it's fixed because it would not run at all as soon as it warmed up, now it runs great.

I replaced the secondary pump right after I got it and noticed that it had Precision brand pumps in it. One thing that i think is kind of odd is that it still showed fuel pressure at the rail when it was stalling out. I wonder if the secondary pump was kicking in when the idle dropped below 400 rpm and kept it sorta running as it was stalling out. Also might explain why it would cut out and than snap back to life a few times.

Thanks for the help!
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