1996 gmc yukon will crank but no start replace fuel pump and fuel psi reg help
Jan 31, 2010 at 1:56 PM
1996 GMC Yukon on start
1996 GMC YUKON
MECHMAN3870
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Did you checked the fuel pressure after you replaced the fuel pump if not do so with fuel pressure gauge designed for your fuel system. If its within specs -Look for ignition spark-
Disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 in away from ground have helper crank engine over-do you have a snapping blue spark?
No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor /distributor pick-up coil, ignition control module, ECM,Ignitor camshaft and crankshaft sensors-
Disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 in away from ground have helper crank engine over-do you have a snapping blue spark?
No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor /distributor pick-up coil, ignition control module, ECM,Ignitor camshaft and crankshaft sensors-
Jan 31, 2010 at 2:05 PM
Ive done that and have spark have noway to check fuel psi no one around here has a gauge
Jan 31, 2010 at 2:22 PM
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