2002 GMC Sonoma Hard starting in the morning

2002 GMC SONOMA
27,000 MILES • 6 CYL • 2WD • AUTOMATIC
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GUITAR54
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  • 1 POST
Fuel pressure is around 50-55 with key on engine off. Spark is good. Recent tune up. Fuel filter is clear. No water or other in fuel. Scanned and found no codes. ETC operating properly. Runs good once started and is easy to start the rest of the day.
Oct 30, 2009 at 11:50 AM
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JEEPFAN
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  • 135 POSTS
you may have a faulty check valve or fuel pressure regulator if theres a schrader valve on the fuel line before u try to start it in the morning see if theres pressure on the system if not somethings allowing the system to bleed down if it fuel injected an injector may be slowly leaking down
Nov 3, 2009 at 8:10 PM