Motor missing/shuddering - Ford Powerstroke Diesel Forum

6.7 Motor Problems 6.7 Motor Problems

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post #1 of 23 Old 09-26-2013, 07:14 AM Thread Starter
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Motor missing/shuddering

I'm new to the forum. I found some threads about my problem but they were all fairly old so I'm going to ask.

I have a 2012 F-250 with the 6.7 and automatic transmission with 6,000 miles on it. At seemingly random times, mostly in 5th & 6th gears at lower RMP going up a grade, the motor will start "missing" or shuddering and I hear a rattle from the motor if I give it more throttle. It seems to happen more often while the exhaust filter is cleaning but not only at those times. It started at about 4,000 miles. My local dealer (Phil Long) has not been any help saying "don't bring it here unless we can replicate the problem".
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post #2 of 23 Old 09-26-2013, 04:08 PM
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My '13 F350 does the same thing. Dealer says it's a characteristic of these trucks. I say BS! Lots of guys have the same issue. I've not heard of a sure fix. What's your gearing? Mine is 3.31. I don't know if that may be a common stat or not.
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post #3 of 23 Old 09-26-2013, 04:11 PM
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read this thread, i posted a TSB in here that may be of interest to you.
2012 F250SDw/6.7L Turbo Diesel Engine Issue - Need Help !!!
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post #4 of 23 Old 09-26-2013, 04:52 PM
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Quote:
Originally Posted by poormanscat View Post
read this thread, i posted a TSB in here that may be of interest to you.
2012 F250SDw/6.7L Turbo Diesel Engine Issue - Need Help !!!
Well, did it correct the issue for you?
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post #5 of 23 Old 09-27-2013, 07:09 AM Thread Starter
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I don't thinkk t has anything to do with the gearing. Just my opinion, but I have a feeling it has something to do with the computer, valvetrain, turbo, or the exhaust regen system. I finally spoke to someone at my dealer that was a little helpful and it sounds like the TSB from poormanscat might be applicable.
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post #6 of 23 Old 09-27-2013, 03:10 PM
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Originally Posted by highmileage View Post
Well, did it correct the issue for you?
I drive a C&C version of the 6.7L. and we have not had to have this TSB performed due to the situations described in the TSB.
Of the 13 trucks we have at our facility, 9 have had engines replaced at least once, and several have had cylinder heads off since engine replacement due to cracked valves.
I happened to hear about this TSB and reading your posts, the symptoms sounded familiar.
In talking with our local repairing dealer, some of the dealerships really do not want to perform this TSB and would rather take a back seat approach and hope that a valve breaks and wrecks the engine. Apparently, the labor hours allowed for this TSB is hard to make when doing the repair "over the fender" versus pulling the cab for an engine swap.
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post #7 of 23 Old 09-30-2013, 05:22 AM Thread Starter
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Thanks for the help. From past experience with my dealer I'm sure they will try to screw me. I guess we'll see.
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post #8 of 23 Old 09-30-2013, 02:37 PM
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lets hope not, I hear the head gasket required to make the repair is on national backorder, so if they give you that excuse, they very well may be telling the truth.
is there another dealership that you can take it to?
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post #9 of 23 Old 10-01-2013, 04:59 AM Thread Starter
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Only one dealer in town.
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post #10 of 23 Old 10-09-2013, 08:33 PM
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My dealership is awesome. However the engineers are full blown stupid and arrogant. Check my post. I'm having same problem but worse.
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