350 trouble fire, fuel, compression but wont tart?
HELP! I have a 95 gmc 4x4... sank it underwater. replaced fuel pump assembly, distributer cap, rotor, and spark module,ignition switch, computer, fuel pump relay, plugs, and wires. had only 80 psi compression, so I bought a 92 chevy 350. mine had tbi, and the new motor had a 850 4 barrel so i stripped it down to the block and heads to keep my tbi. i changed over all sensors. i now have 150 psi of compression, i have good fuel spray( i drained tank and removed water). I have spark at the plugs, but will not crank. it is definately in time... I had in on tdc on #1 piston on compression stroke and rotor continues to be at #1 plug( i did try 180 out to be sure). i accidentally tried cranking without the neg side of battery grounded and the but it still tried to crank. it burnt then engine ground into so i replaced in with #6 gauge ground and reatached the neg side terminal. motor turns over but wont crank( it tries to really bad:( ). Its my origanal starter, and wondering if it could be pulling too many amps and robbing the ignition coil from power. the coil ohms out good, but cant check the ac output to see if its enough spark to ignite fuel....
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Tags: ac output, amps, chevy 350, compression stroke, distributer cap, fuel pump, fuel pump relay, fuel spray, gauge, gmc, gmc 4x4, origanal, piston, psi, rotor, sensors, side terminal, tank, tdc
January 13th, 2010 at 11:51 am
…your a better man than me mate…i would have sold it!…
one thing i would try,
remove the air filter so you can access the inlets on the inj/carb…and try and fire it up with ”easy start”…it should run on easy start alone….it may just need that little more to get it fired….
you have the patients of a saint friend…
have a star.