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Re: Misfires under load. P0300, P0171
Posted to Technical Discussion Forum on 3/31/2016

Greetings everyone,

I apologize for forgetting to update this post. Here goes.

This truck was fixed by replacing the spark plugs and the ignition coil boots. The boots were done on a preventative basis. Every single spark plug had burned the tips off the e... Login to read more.