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66-96 Ford Broncos - Early & Full Size

89 Eddie Bauer 351 no spark

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I'm stumped on this one. After a valve cover replacement, the motor ran fine at idle, but bogged down under load. Acted like a misfire. Tried again and it stalled out and won't restart. Checked and was getting no spark. Replaced plugs and wires, ignition coil, distributer cap and rotor and TFI. Any suggestions would be appreciated.

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Yo Bob,


How to Troubleshoot a No Start (Ford 4.9L, 5.0L, 5.8L).



by Abraham Torres


You can probably obtain the HIGH ENERGY SPARK TESTER; AND FUEL pump pressure gauge (if needed), etc. at local parts store using their loan a tool program.


Try a Self Test for Diagnostic Trouble Codes (DTC)s by my pal, BroncoJoe19 @ http://broncozone.com/topic/14269-code-reader/?pid=74587&mode=threaded


Some basics;

The engine temperature must be greater than 50° F for the Key On Engine Off (KOEO) Self-Test

If you can get it to run, then do the Key On Engine Running (KOER) Self-Test.

Post Code(s) here according to:




GL Bob!

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Check to make sure there isn't a wire pinched under the valve cover. That happened to me when I had a set of heads installed.

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