Like the title says, i have a first gen cummins in a 03 550. Stock other then turning the fuel pump up. Runs fine in the morning but when the outside temp gets up like in the afternoon it runs sluggish..the temp of the truck doesnt change at all but it idles about 150-200rpms less and it wont pull like it does in the morning. Anybody have any idea where to start looking?? Thanks!!
550/cummins loses power when its hot
- Thread starter lantz84
- Start date
not enoughsmoke
floatin in tha gulf
- Joined
- Dec 28, 2008
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- 5,730
what about the KSB is it wired up?
ozone burner
New member
- Joined
- Mar 18, 2009
- Messages
- 336
is it hard to start when it is hot because your pump may be going south
it starts fine when its hot just doesnt run as good. ok on the ksb, not gonna act like i know what it is. if you can tell me where it is and how it is should be wired i can do it. i had some one do the swap for me and he did a less then desired job.