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Surging and back firing

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Old Aug 17, 2015 | 06:57 AM
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diesel-medic's Avatar
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Surging and back firing

So I just bought a 2000 dodge 2500 6 speed manual with 222400 miles on it. \

Have been having some issues with it.

First of all last owner had a security system on it that if you didn't unlock the doors right the truck wouldn't start. Fixed that with a fob.

The lift pump stays on the whole time. You turn the key on and the lift pump will just run and run.

We installed a raptor 150 last night and now it is acting like it is getting air or something. You got to accelerate and it starts to back fire and pump a lot of white smoke.

Any ideas?
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Old Aug 17, 2015 | 09:03 PM
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From: Pacific NW, B'ham, Kalispell MT
Any codes?
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