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Old 01-15-2017, 07:45 AM   #1
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Dodge Dakota misfire

Hi, I have a 2003 dodge Dakota, 3.9 engine, automatic, rear wheel drive. 174000 kms. The problem I'm having is a p0303 cylinder 3 misfire, even though I have replaced everything I can think of that has anything to do with ignition, including oxygen sensors. Compression test results are all good. Some days it won't do it but 95% of the time it does. Has anyone ever had this same problem? Any help would be appreciated and maybe slow down the greying of my hair.
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Old 01-15-2017, 08:22 AM   #2
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How about the fuel injector, have you tried fuel injector cleaner?
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Old 01-15-2017, 09:46 AM   #3
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In that case I would go look for a flat cam lobe on the mechanical side...
Check to make sure it is getting the juice...
And like Iowan said. Injector....

Note: you can swap some of the parts ad see if it follows, to check to see if the component is faulty or not...

Keep us posted..

Just my 2 cents
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Old 01-16-2017, 01:09 AM   #4
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Could also have a bad valve spring
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Old 01-16-2017, 07:34 AM   #5
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Quote:
Originally Posted by TVLynn View Post
Could also have a bad valve spring
So True..
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Old 01-16-2017, 07:31 PM   #6
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Could be a bad valve guide, had it happen on a Pontiac V8 twenty years ago. Sometimes the mis was there then it would be fine, finally it was more consistent and diagnosable.
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