5.4 misfire and codes
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5.4 misfire and codes
5.4 misfire n codes, engine runs fine at idle seems smooth , at about 1500-2000 rpm noticeable miss and lack of power. new O2 sensors , plugs, air and fuel filters, replaced coil and injector on #6 and coil on #8. getting codes 300 306 308 after chging coils and inj #6 dropped off code still getting 300 and 308, any ideas????
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Joined: Sep 2003
Posts: 5,844
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From: Albuquerque
When you changed plugs, did you also change out the boots? (almost a MUST do...IMHO)
Try removing a COP that is not giving you a code (ie: #1)...and replace it with #8 cylinder that is giving you a code. See if the code follows the COP...if yes, then it is still the COP. If not...then check and re-install or replace the spark plug with a new boot. Check condition of the spark plug. What does it look like?
Hope this helps some...
biz
_______________________________
2003 F250 SD SC 142" XLT FX4 V10 Auto 4x4 3.73s
Try removing a COP that is not giving you a code (ie: #1)...and replace it with #8 cylinder that is giving you a code. See if the code follows the COP...if yes, then it is still the COP. If not...then check and re-install or replace the spark plug with a new boot. Check condition of the spark plug. What does it look like?
Hope this helps some...
biz
_______________________________
2003 F250 SD SC 142" XLT FX4 V10 Auto 4x4 3.73s
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