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98 chevy truck 350 engine 93K miles when starting sometimes the engine will backfire..could be cold or hot engine..but after it runs for a couple of minutes will run fine..

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A backfire usually indicates a timing issue. I recommend a minor tune up, which will include new plugs and wires, as well as checking/setting the distributor timing. An oil change is also recommended after the issue is corrected, as offset timing can cause fuel to remain in cylinder, which then bleeds past the piston rings and ends up in the crankcase with the engine oil.

Posted on Apr 23, 2017

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Posted on Jan 02, 2017

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