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Old 08-15-2013, 03:03 PM
2000CAYukon 2000CAYukon is offline
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Re: Cold start resolution?? - '90 K2500 5.7 TBI

Quote:
Originally Posted by webbch View Post
The vacuum line was NOT the problem. I found a very loose connection on the ground wire between the engine and firewall. As a side note, my temperature, oil pressure and alternator gauges were displaying _slightly_ low before I tightened up the ground wire as well.

Since fixing the ground wire, I've had two successful startups without the engine dying. Keeping my fingers crossed. I think the bad ground was messing with either the ECT or MAP readings, causing the engine to shut down.

Quick question: While running, fuel pressure is about 12 psi. After I stop the engine, most of the fuel pressure bleeds off within about 15-20 seconds. Is that pretty typical?
I owned a 90 K1500 5.7 for 20 years. My fuel pressure would bleed off quickly after shutting down so I think that was normal for TBI.

//2000CAYukon
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