1993 S10 blazer won't start - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dave1967 · 08-19-2004, 11:05 PM

I have a 1993 blazer S10, VIN W, 4 wheel drive. It has the vortec with the CPI. The engine will turn over but will not start. It will make a backfire noise when cranking like it wants to start. Fuel pressure is good. Will a bad fuel pressure regulator cause this?
Thanks,
Dave

jrcmedic · 08-21-2004, 09:09 PM

generally it sounds like you got more going on than a fuel pressure regulator. sounds more like a firing problem of some sort, like a timing chain jump or break, a distributor problem or a ECU problem. It's hard to say, not being there, but the backfiring sound to me like one of the above. Good luck bro and let me know what you find.

Dave1967 · 08-21-2004, 10:58 PM

I am going to try a new regulator. I have just replaced the nut kit because the inlet fuel line was leaking.
The engine wasn’t running right, so I changed the wires, plugs, cap, and rotor, then it wouldn’t start. I am sure the wires are on right. That is when I pulled off the upper plenum and found the fuel inlet line leaking and replaced it but still would not start.
I had to order the fuel pressure regulator, so I have to wait on that.

phantom dually · 08-22-2004, 09:31 AM

The back fire makes it sound like the wires are not in the correct order. Did you pull the dizzy for anything?

08-19-2004, 11:05 PM	#1
Dave1967 Registered User Join Date: Jun 2004 Location: Ruidoso, NM Posts: 9	1993 S10 blazer won't start I have a 1993 blazer S10, VIN W, 4 wheel drive. It has the vortec with the CPI. The engine will turn over but will not start. It will make a backfire noise when cranking like it wants to start. Fuel pressure is good. Will a bad fuel pressure regulator cause this? Thanks, Dave

08-22-2004, 09:31 AM	#4
phantom dually Project92 SWB stepside Join Date: Feb 2003 Location: Louisville KY Posts: 4,792	The back fire makes it sound like the wires are not in the correct order. Did you pull the dizzy for anything? __________________ 92 C1500 stepside 496 Stroker Competiton Engineering Ladder bars/QA1 coilovers. Dana 60 rear with 4.10 gear and posi. Bonspeed Palisade 20x12 in rear w/335/30/20 and 20x8.5 front w/245/40/20. 5/8 drop with Belltech springs/DJM spindles/drop shocks. WWS Progress thread http://67-72chevytrucks.com/vboard/s...d.php?t=140448

08-21-2004, 09:09 PM	#2
jrcmedic Registered User Join Date: Jul 2004 Location: upstate New York in the sticks Posts: 18	generally it sounds like you got more going on than a fuel pressure regulator. sounds more like a firing problem of some sort, like a timing chain jump or break, a distributor problem or a ECU problem. It's hard to say, not being there, but the backfiring sound to me like one of the above. Good luck bro and let me know what you find.

08-21-2004, 10:58 PM	#3
Dave1967 Registered User Join Date: Jun 2004 Location: Ruidoso, NM Posts: 9	I am going to try a new regulator. I have just replaced the nut kit because the inlet fuel line was leaking. The engine wasn’t running right, so I changed the wires, plugs, cap, and rotor, then it wouldn’t start. I am sure the wires are on right. That is when I pulled off the upper plenum and found the fuel inlet line leaking and replaced it but still would not start. I had to order the fuel pressure regulator, so I have to wait on that.



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