Why is my truck such a dog when i first start driving - Ford Powerstroke Diesel Forum
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Old 06-09-2013, 01:40 PM
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Why is my truck such a dog when i first start driving

ok guys i have an 07 f250 it has a egr delete and a bully dog air box kit.
the truck starts fine and idles great the it builds boost fine and i just tested the fcim and it has 48 volts at all 3 stages of the test it dont have any kind of miss while idle or driving either. after it warms up a bit it runs ok but still seems like its just not right i did notice just a small amount of white smoke when it first starts but that goes away in a few seconds any help please and im only getting abot 12mpg ouch lol
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Old 06-09-2013, 02:00 PM
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Bad mileage and not feeling quite right ended up being injectors on my friends truck. The mileage going down seems to be a good indicator from the somewhat limited experience i have, same thing on two friends trucks, mileage started dropping and eventually diagnosed bad injectors. Was a slow decline over about a year for their trucks.

Jason
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Old 06-09-2013, 02:06 PM
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know last time fuel filters were changed? I get about 11.7 average with 35's and 70/30 town/highway normal driving.

you could do a coolant pressure test to test heads/ coolant system. but I think a tiny bit of white smoke on initial start is not bad?

have any code readers or? you can try to run some biodiesel with like half a tank of regular diesel and see if you can clean your fuel system up and change your filters soon after. the bio blend really cleans junk out.
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Old 06-09-2013, 02:30 PM
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i also have dont the blue spring mod but dont think that really matters.
i have not noticed the truck loosing any coolant at all
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Old 06-09-2013, 02:33 PM
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most springs are actually not bad I did mine because I was bored and sold some parts haha. you know last time fuel filters were changed? that can make a bigger difference then alot of ppl think... also could check your maf sensor, and unplug all batteries for about 15min and do a computer hard reset. im still not the diesel mechanic but a few smarties will chime in.

good luck man.
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Old 06-09-2013, 02:59 PM
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i changed the filters about a year ago and run fuel additive often
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Old 06-09-2013, 03:48 PM
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if you got more then 10k on filters I would change. how about codes? any contributions or?
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Old 06-09-2013, 04:01 PM
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i have a p0401 says egr problem i just have the egr valve plugged in tied up just trying to get it running good befor i put the banks on it and that should get rid of that code
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Old 06-10-2013, 04:28 AM
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Come on guys no ideas at all lol ill check any thing at this point
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Old 06-10-2013, 04:37 AM
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White smoke on cold start is normal. My truck will have just barely any smoke coming out but as soon as it is warmed up, the smoke is gone. Is the truck stock or running a tune?
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