Question about 1988 GMC S-15

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Starter hitting fly wheel hard someone said something about it being shemed wrong starter was cracked changed out would crank changed plugs, plug wires, new distributor, rotor cap, button, still wil

What is causing it not to crank? Oh new battery also!!! Was running and died while stopping at stop sign wouldn't crank again after that!

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  • 379 Answers

Well hopefully the engine is not siesed get a socket and a cheater and find the main pulley witch turns the crankshaft and see if you can crankit if you cant then chances are it locked up

Posted on Jan 14, 2013

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6ya6ya
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Posted on Jan 02, 2017

GM Elec
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SOURCE: crank twice to start engine 2001 gmc sierra 5.3.ltr

Has the fuel regulator been checked or replaced.
I'm not sure which engine you have, but to check the regulator, if it applies to your engine, is to connect a fuel pressure gauge and monitor pressure after the engine is shut off. The fuel pressure should not leak down, if it does, you may have a weak regulator or leaking injector.
If the regulator checks out, you may want to consider a fuel injector rail cleaning. I don't know how many miles you have on the truck, but if you are over 60K and the system has never been cleaned, the injector or injectors can deliver a malformed spray pattern that is not atomized correctly and cause hard starts, hesitation and lower fuel economy.
Good luck, let me know.
Regards.

Posted on Mar 30, 2009

  • 14036 Answers

SOURCE: 96 gmc vortec will not start

I AM LOOKING AT TIMING ISSUES OR INTAKE MANIFOLD LEAK.OR EGR VALVE STUCK OPEN.

Posted on Dec 30, 2009

  • 5 Answers

SOURCE: I have replaced distributor cap, rotor button,plugs and wires

I had the same problem. Google your engine I had a 4.3. Click images for fiiring order you will find it. You can also click video for setting timing. I got mine running with this information. Just remember that there are two marks on the harmonic wheel one for TDC & BDC. Also you need 3 things air/fuel/spark. Make sure you have these before replacing parts it gets spendy. I got my whole distributer and spark module for 40.00.

Posted on Jul 27, 2010

  • 1565 Answers

SOURCE: 1990 GMC C1500 5.7 Litre engine will not start.

crank position sensor. When this goes out the engine will fire for 1 or 2 seconds and then shut down.

Posted on Sep 28, 2010

  • 7353 Answers

SOURCE: 1990 GMC 350 engine stops while idling at light.

The Idle Air Control runs idle speed, it may be stuck or just bad. its located at the left rear corner of the throttle body, make sure its plugged in.

Posted on Dec 06, 2010

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