06-03-2011, 08:37 PM
N fuckin ford 5.4 motors eat coils like candy...
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636 bog when hot
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06-03-2011, 09:37 PM
 Originally Posted by richd3000  thanks I'll keep that in mind
06-03-2011, 11:02 PM
If you think the pump is a problem, make sure you do a pressure test.
I recently had a 636 that had been acting up. Everything was checking out "ok" then the last dyno run came out lean. Turns out the pump was putting out about 20-30 psi, plenty of volume for it to operate, but the bike needs 45psi to run correctly. New fuel pump solved this particular problem. 
08-15-2012, 04:29 PM
I Know this is a year old thread but just curious if you ever discovered the issue ?
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