The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - '00 5.3L with multiple misfires. Not sure why

sjreno · 10-03-2011, 01:25 PM

My truck ran flawless until I had her parked for 9 mo. Then when I started her up, there were multiple misfires. Changed out plugs, wires, fuel filter, air filter, and NOTHING. Runs good under load though. Intake mani gasket?? Vac lines im not aware of?? Thanks for your help.

10-03-2011, 01:25 PM	#1
sjreno Registered User Join Date: Aug 2009 Location: central jersey Posts: 55	'00 5.3L with multiple misfires. Not sure why My truck ran flawless until I had her parked for 9 mo. Then when I started her up, there were multiple misfires. Changed out plugs, wires, fuel filter, air filter, and NOTHING. Runs good under load though. Intake mani gasket?? Vac lines im not aware of?? Thanks for your help.