Question about 1993 GMC Jimmy

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1993 jimmy wont start

I spray starter fluid into the carb. to get it up and running it idles fine and it makes no wierd noises i recently changed the disribritor cap and rotor and now itll only go 5mph going up hills and backfires when i step on the gas

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  • carhob May 11, 2010

    did u check firing order after changing cap!

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You are off the timing by a tooth or two. when you replaced the cap and rotor, if you did not mark the position of the rotor with some point on the motor or firewall, then it is likely that you installed the rotor by a couple of degrees. so, when you are going up hill, and the engine needs to advance the timing to add power you timing is off even more causing lack of power and sputtering and backfiring.

Posted on Jun 06, 2009

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