Posted by gbs on February 04, 2018 at 05:45:21 from (76.3.120.28):
I know this is a tractor forum but I have run into a snag and can seem to find an answer else where to the problem with this truck, it is a 1988 f150 5.0 electronic ign. ,TFI system it died about 2 months ago no spark at the coil, module in the dist. went out , installed a rebuilt dist., then 2 weeks ago died again no spark at the coil, voltage at the coil test 10.8 while cranking, the dist. is turning wire to the dist. from the coil shows a definite impulse, replace coil, got spark a coil, spark appeared weak at dist. no spark at plugs, replaced coil wire with 2 different ones no change, replaced dist. cap and rotor still only a weak spark at the plug about every 4th revolution of the engine, replace the coil with another new one no change, every grd. connection I can think of has been cleaned and temporarily grounded with a test led to insure a grd. also installed a test led from the battery to the coil to insure proper voltage no change, what have I missed?????
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