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Still working on misfire

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Old 12-02-2012, 10:18 AM
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Default Still working on misfire

Have trouble finding problem. Codes 1300, 300, 301, 305, 306, 308.

New bosch sensor, new bosch plugs, new STI wires. Runs way to rich. Plugs are not burning gas, checked plugs with misfire, they are wet with gas. Gray smoke out the exhuast, has strong gas smell. Decided to have injectors cleaned, no change. Checked fuel pressure. Key in position 2 (car not running ) no pressure. Start car 50 psi, turn key off no pressure. Not sure what to check next, thinking of changing plugs or at the very least swap them around and see if i can move the misfire. Not sure why pressure drops as soon as key is turned off. Any thoughts, thanks
 
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Old 12-02-2012, 10:23 AM
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Coil pack would be your way to see if misfire follows.
 
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Old 12-02-2012, 10:29 AM
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I'm having misfire on both coil packs, thats why i was re-thinking plugs, thanks
 
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Old 12-02-2012, 06:21 PM
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My coil packs went bad 2 weeks ago instantly. Working fine one day and not the next. Plugs and wires by themselves did not fix the problem. New coils and truck was driving properly. You can mess around with a bunch of stuff and drive yourself crazy or just install new ones!!
 
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Old 12-04-2012, 03:08 PM
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Removed coil packs from car, tested with multimeter. secondary cheched out fine, all around 13.99K Ohms. Primary was not in spec. All 4 checks showed over 1.5 to 1.7 Ohms. Should have been no more then .055 Ohms

I guess i need to new coil packs
 
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Old 12-04-2012, 03:38 PM
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Sounds like you do.
 
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Old 12-06-2012, 06:34 AM
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I miss read my meter, coils check to be good. Swapped them to see if it would make a difference, no change. Still have same codes.
301,305,306,308,1300,300. No more fault codes, no sensors, nothing.
I will make a compression test as soon as i can put my hands on a tester, not sure what to check after that. Need help, thanks.
 
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Old 12-06-2012, 06:46 AM
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you say you still have the same codes, did you clear them and they returned?
 
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Old 12-06-2012, 07:11 AM
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Yes the codes cleared after every test that i make, always comes back with same codes.
 
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Old 12-09-2012, 12:51 PM
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Can a defective crankshaft sensor cause this problem. Do not have a fault code on sensor but have been told that it will not always throw out code.
just asking
 
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