Surge when warming up, worse after oil change - Ford Powerstroke Diesel Forum
 
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post #1 of 5 Old 03-13-2012, 07:35 PM Thread Starter
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Surge when warming up, worse after oil change

My truck for the past couple years gets a chug/surge going on as soon as the temp gauge gets off of cold until it warms all the way up. Gets worse with fresh oil. Any ideas? Injectors, hpop?

1997 F-250 ex cab. Swamps tunes, afe intake, mbrp 4" exhaust, idm mod
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post #2 of 5 Old 03-13-2012, 07:38 PM Thread Starter
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Also doesnt do it under accel/decel, just while cruising at any speed

1997 F-250 ex cab. Swamps tunes, afe intake, mbrp 4" exhaust, idm mod
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post #3 of 5 Old 03-14-2012, 09:07 PM
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Did you put any oil additive in there when you did the oil change?
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post #4 of 5 Old 03-20-2012, 08:13 AM
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you should try changing the oil in the HPOP. theres a fill screw on top of the resivour. use a brake bleeder or some sort of vacume to suck the oil out (it holds about a quart) then fill it and run it for a minute and it will fill with the nasty sludge oil again, do it like 3 or 4 times youd be surprised how much it helps
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post #5 of 5 Old 03-20-2012, 11:02 AM Thread Starter
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Didn't use any additive this time. Have used lucas before with no change. I will try the hpop oil, thanks

1997 F-250 ex cab. Swamps tunes, afe intake, mbrp 4" exhaust, idm mod
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