Question about 1985 Ford Ranger

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85 ranger, engine cranks but won't start. Fuel ok, no spark during crank, sparks at end of crank. 2 weeks ago I replaced the intake manifold gasket and starter, it started right up. The vaccum was at 20 lbs. Three days after that, I went to start it up and it started hard. Checked vaccum again and it was at 15 lbs and steddy. The next day it quit starting alltogether. Battery, starter, ign. switch all ok. Cleaned all plugs. I have checked for spark off the coil. As I said before, during the crank there is no spark, then at the end of the crank there are a few sparks. When coil wire is plugged in you can here a couple pistons fire at end of cranking the ingition.

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Sounds more like an electrical problem.First I'd check the battery voltage, should be at least 13. It shouldn't drop much below 11 when you crank the engine and it should bounce back when you stop. Make sure your connections are good especially to the coil,wires aren't frayed or loose on connectors. There should be a ground from the body to the motor. Is it still thereand making good contact? If I'm not mistaken the coil should ground to the motor, make sure it has good contact as well. Also double check your connections at the starter to make sure they are clean and tight. Loose connections can draw extra power and could draw enough extra power to kill the coil. Hope this helps.

Posted on Jul 04, 2009

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