Q: Backfire

asked by on November 05, 2017

We got a 2000 Dodge 1500 with the V6 magnum we swapped another motor the same V6 magnum all the plugs plugged in everything matched up perfectly it wouldn't start at first we put a crankshaft positioning sensor in it we got it to start but now I have a small backfire and I don't have no power we swap the distributor spark plugs and fuel injectors and checked all the fuses and it still won't run right
My car has an automatic transmission.

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