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1997fordf150 cranks no spark

4.6 engine cranks strong no spark

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You are shorting the plug wire to the engine while cranking and no spark? Check for broken lead wires, should be clean, no crimps, do continuity test. Check distributor, coil wire and the leads that connect to it. Should be clean and dry. WD40 with a rag is good. Check the air gap in the distributor with feeler gauge if you have that. DO NOT have key in "on" position. Check if computer is all right and sending signal with jumper wire under the dash. ( you'll need a manual to read the codes that blink.) Check for good engine ground. That's it. Good luck.

Posted on Jul 25, 2013


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Check battery voltage, need 12.6 volts or more
Check fuel pressure at motor with a gauge -approx 38 to 42 lbs
Check spark with the adapter made for that,
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After that you need help,a scan tool to look at data,etc
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My friend "cranks" is the same thing as "turn over" ... does it crank or not? You say it has a strong crank ...

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