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towbar · 11-03-2012, 09:13 PM

update: pulled the plugs and did a compression test today, had 140-150 psi on 1, 2, 3, and 6. had only 90 on #4 & 5. So some loss on 2 cylinders but I don't think that will keep it from starting??

rolled it up to TDC #1 and pulled the distributor cap, was pointing directly @ #1 firing position.

put new plugs in and new plug wires to go with them. pulled the ignition control module and coil and installed them on my sons xtreme s10 and it started fine. also verified that it has spark on each plug wire with my calibrated ignition tester. l also pulled the harness for the fuel injection and used my noid light to verify the ECM was firing the injector and it was.

I'm down to thinking that the injection spider is crapped out and not spraying fuel into the cylinders....only issue with that theory is that the truck doesn't fire off when I spray ether down the throttle body which contradicts that.

anyone want to chime in....I'm sure there are better mechanics on here than me.

11-03-2012, 09:13 PM	#7
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: pulled the plugs and did a compression test today, had 140-150 psi on 1, 2, 3, and 6. had only 90 on #4 & 5. So some loss on 2 cylinders but I don't think that will keep it from starting?? rolled it up to TDC #1 and pulled the distributor cap, was pointing directly @ #1 firing position. put new plugs in and new plug wires to go with them. pulled the ignition control module and coil and installed them on my sons xtreme s10 and it started fine. also verified that it has spark on each plug wire with my calibrated ignition tester. l also pulled the harness for the fuel injection and used my noid light to verify the ECM was firing the injector and it was. I'm down to thinking that the injection spider is crapped out and not spraying fuel into the cylinders....only issue with that theory is that the truck doesn't fire off when I spray ether down the throttle body which contradicts that. anyone want to chime in....I'm sure there are better mechanics on here than me.