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Country Talk Discussion Board

Re: 89 Chevy Mech Q

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Posted by Bob on December 30, 2004 at 17:36:46 from (

In Reply to: 89 Chevy Mech Q posted by Gunner on December 30, 2004 at 16:33:29:

Use a spare spark plug, with the contact bent open to over 3/16", and clamp it to grounded metal, and connect one of the spark plug wires to it. Then, crank it over, and chack for spark. If there is no spark, it may have a bad ignition pickup, or module, or shorted computer.

Distributor caps and rotors on these are known to fail, also, shorting out the spark.

If the ignition pickup or module has failed, the computer will not know the engine is cranking, and will not inject fuel.

If there is spark, and you suspect it may be flooded, hold the accelerator to the floor, and crank the engine over. This puts the computer in "Clear Flood Mode", and it does NOT pulse the injectors, and therefore adds no more fuel to the already "flooded" cylinders, so they can clear of excess fuel. It MAY fire than, if flooded.

Check for spark, and post back.

P.S. ...

Also check the several fuses labelled "IGN" or "ECM" (computer).

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