Injectors caked in carbon up to end of nozzles - Ford Powerstroke Diesel Forum
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Old 06-18-2014, 09:13 PM
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Injectors caked in carbon up to end of nozzles

Truck started running really bad one day. Got off the freeway and shut er down. Let it sit for a little and then it barley started. Now it smokes whitish like crazy and dies whithin a block. I pulled the injectors the drivers side were ok but the passenger sides was awful. On seems hand tight and one was missing the copper washer. All are caked with carbon. So are the injectors bad or just since all the seals were Bad so it causes the issues.
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Old 06-19-2014, 06:33 AM
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You were getting a lot of exhaust gas blow by. Running it like that for a long time could damage the internals of the injectors (plunger and nozzles). You should open up the worst one to ensure the plunger and barrel are not stuck or worn too badly and ensure the nozzles needle is free. More than likely you can bring them back to normal with some cleaning. Having the injectors flow tested would be a good idea, but you could reinstall them as a self-test. That would only cost you your time if you needed to go back in and replace one or 2.

The white smoke is probably a stuck open injector, especially if it smells like raw diesel. If so, fix it before it hydrolocks or damages the engine.
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Old 06-19-2014, 07:09 AM
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I'll give it a shot. Great write ups btw. Thank you
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