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Old 03-10-2019, 02:07 PM  
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Duratec misfire

My car idles fine and drives good, but sometimes it begins to sound like a 2-stroke and I have a misfire on cylinders #2 and #3. After restarting car, or just driving a bit, it goes away in a snap, and it runs smoothly again. Any ideas?


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Old 03-10-2019, 03:23 PM  
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Whats the plugs look like?
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Old 03-10-2019, 04:50 PM  
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Brand new Autolite 104's. Just looked and noticed my coils are cracked...
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Old 03-10-2019, 10:56 PM  
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Brand new Autolite 104's. Just looked and noticed my coils are cracked...
OK.....I'd be figuring out how the coils are/got cracked?
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Old 03-12-2019, 11:24 PM  
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Replaced coils. Car runs better. However, every once in awhile my motor sounds like a 2 stroke, and I have to either restart it while in motion or sometimes after 30-45 seconds it smooths out in a snap. I'm so confused. I like my SVT so much better than the 2.0 Duratrash. Any ideas?
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Old 03-14-2019, 02:05 PM  
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No ideas?
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Old 03-14-2019, 04:08 PM  
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Everyone has ideas but how many parts are you willing to change as people give you " ideas " ?

Need to do a datalog of whats happening , could be a bad front o2 , Vac leak etc etc

Tom
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Old 03-14-2019, 07:53 PM  
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I already played the parts game. New manifold, new upstream o2, plugs, coils, fuel rail pressure, maf, map, pcv valve and hose. Desperate and confused.
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Old 03-16-2019, 02:39 PM  
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Quote:
Originally Posted by triclunderclops View Post
I already played the parts game. New manifold, new upstream o2, plugs, coils, fuel rail pressure, maf, map, pcv valve and hose. Desperate and confused.
Got an '04 2.3 ZTS AT doing the exact same thing, no CEL or codes. Waiting for CEL or to get worse, keep me posted and I will do the same if anything new comes up on it.
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Old 03-19-2019, 11:44 AM  
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I'm considering selling this for around what I paid. Not a fan of the Duratec
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