The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

towbar · 11-02-2012, 10:08 AM

update: went home yesterday, charged the battery to 100%, pulled the throttle body cap, unplugged the mass air sensor, had my step son crank the engine over while I sprayed starting fluid into the throttle body, still no start. So it led me to believe that its ignition related. So I got one of the KD tool calibrated ignition testers for the HEI style ingnitions. it has a huge gap to arc across so if ther was an ignition problem, the tester wouldnt arc. pulled the # 4 cylinder plug wire and connected the tester....plenty of spark!! I pulled the plugs on the pass side, all look really nice, cleaned them and reinstalled...still no start.

OK, now what, back to the fuel system, I checked fuel pressure again, with key on I have 62 while the pump runs, will drop back to about 58when the fuel pump quits priming. after about 5 minutes, pressure will drop off to about 52-53 so I dont feel the regulator is the problem.

any ideas??

11-02-2012, 10:08 AM	#6
towbar Registered User Join Date: Jul 2012 Location: Marshall, NC....heart of the Appalachians.....aka, Gods country!! Posts: 537	Re: 2001 4.3 S10 wont start update: went home yesterday, charged the battery to 100%, pulled the throttle body cap, unplugged the mass air sensor, had my step son crank the engine over while I sprayed starting fluid into the throttle body, still no start. So it led me to believe that its ignition related. So I got one of the KD tool calibrated ignition testers for the HEI style ingnitions. it has a huge gap to arc across so if ther was an ignition problem, the tester wouldnt arc. pulled the # 4 cylinder plug wire and connected the tester....plenty of spark!! I pulled the plugs on the pass side, all look really nice, cleaned them and reinstalled...still no start. OK, now what, back to the fuel system, I checked fuel pressure again, with key on I have 62 while the pump runs, will drop back to about 58when the fuel pump quits priming. after about 5 minutes, pressure will drop off to about 52-53 so I dont feel the regulator is the problem. any ideas??