10/2/2023 0 Comments Small cam 350 cummins oil cooler![]() ![]() Took non contact thermometer and measured exhaust temp at manifold ,found no 1 not firing. Fired up the engine it sounded horrible, like a rap in the first cylinder but went away as you increased the rpm's. I put the engine back together and set injectors and valve lash. sent heads out supposedly pressure tested one was leaking through the injector seat, had all six changed, heads surfaced and rebuilt valve job, valve guides etc. The three head gaskets looked ok not blown through. I have 1978 855 NTC that is smoking badly, the truck overheated and was blowing heavy white smoke, so I took apart the top of the engine and had the heads checked. Hi really need some help with my cummins engine
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