Q: My car won't idle - 2002 GMC Savana 2500

asked by on November 13, 2016

Ok computer says it's crank senior ireplaced. It I replaced cam senior as well and timing chain I lined up the timing marks and number on piston on compresion stroke distributor is on number one as well and when I crank it .it starts but back fires and like it's out of timing do you think the cam may be worn please help I don't know what else to do call me if you want I can explain better 540-256-1463 my name is curtis my gmail is curtis.bishop73@gmail.com

My car has 345567 miles.
My car has an automatic transmission.

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