Question about 1993 GMC Sierra K1500

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I have a 1993 gmc 1500 5.7 liter I just had the tranny rebuilt and now I have been having problems with it running! so I gave it a new tune up, plugs, wires, coil, dist cap, rotor, I have even went as far as to give it a new battery, starter, and alternator! and the problems just got worse.. so now this guy wont even start.. when i crank it over it sounds like its bogging down and will not start. But when I disconnect the coil it rolls right over! I have never seen this can anybody help?

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  • Juston May 11, 2010

    Did you get the plug wires on the right posts on the distributer cap?

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Two things kill engines faster than anything 1) fuel 2 ) ignition So 1) Fuel coming through line at good volumes and pressure? fuel pump and its electrical supply in good shape? In-line fuel filter not clogged? Does she fire if you squirt Easy Start (raw alcohol) in the throttle throat? Is the fuel fresh and not rancid stuff that has been sitting in a can for years? No disconnected hoses (crank case breather/relief pipe) to the inlet manifold to cause loss of vacuum? and 2) Timing? leads in right order from dist cap? fuses all OK? can you see spark jumping from top of coil to HT lead when disconnected but brought up close? check that low tension wires are on the correct terminals.

Posted on Apr 24, 2010

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