Tip & How-To about Ford F-150
If you have a slight misfire and only get a P0300 random multiple misfire code here is a trick that i use. u will need to have a scanner with a "generic/global OBD2" setting. go into mode 6 and go to special tests and find test number 53. fi you find this you will see a special misfire counter and will show misfire history. clear the codes and get the misfire to come back. recheck this section in the scanner and you will see where that hidden misfire is. this trick is great for finding bad coil boots or water on the boots without going though the trouble of removing all the coils for Ford engines with coil-on-plug systems.
Posted by david... on
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