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We have a 1980 chevy chevette. we have chaged the fuel pump,spark plugs,wires,distributer cap and rotor,and coil pack.the car will crank but not start.
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Check the wireing to the pump they had problems with it it tended to over heat and corroad there is a service bulliton on the prroblem #25215705and a kit with new wires and connector to resist over heating Icould give you the kit # but i got a DELPHI pump and the connector dosn;t fit a chevy pump
To be perfectly sure where the number 1 cylinder fire is at this point remove the valve cover, remove the #1 spark plug, remove the distributor cap, clean the crank to identify clearly the crankshaft marking on the crankshaft harmonic balancer wheel.
First step: Slowly turn the crank by hand until the line on the crank lines up to the zero timing mark...if you are on #1 the rotor in the distributor should be facing the #1 segmant in the distrbutor caps firing sequence, to verify further both intake and exhaust valve rocker arms should be in the valve closed positions in the #1 cylinder, the piston should be all the way to the top opf dead center(carefully insert a long skinny screw driver into the #1 spark plug hole to feel the pistons top travel while being sure the valves are both closed as explained above).
With all that checking out you are now exactly on top dead center in the #1 firing order sequence of your valve timing.
1/ Have you fitted the spark plug leads in the proper firing order.
2/ Look inside the top of distributor Top (this is not the first time a new distributer cap has very small crack) or the rotor arm is fitting the cap properly. Hope this helps Best Wishes, Malcolm Campbell.
Start off by taking a spark plug out when it shuts down. If it is dry and a light tannish color, then you have a gas problem. If it is wet and dark colored, then you have a spark problem. Let me know what you find out.
before you drop tank again, check fuses & relay.then disconnect fuel line @ filter turn key to on position should hear fuel pump run and get gas stream out of line. if no flow from line new pump faulty be sure & remove negative battery cable first good luck.
My 1995 died after rain storms and high humidity,my mechanic changed the distribution cap, the wires and ignition and its find now 181,000 and still going strong.
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