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turbo is not cutting in on cummins diesel boat motor?

animals rule asked:


any ideas as to why the turbo is not working. It has just been fitted (brand new turbo) but is not cutting in when increasing speed.

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This entry was posted on Wednesday, February 25th, 2009 at 12:57 pm and is filed under Marine Diesel Engines. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

3 Responses to “turbo is not cutting in on cummins diesel boat motor?”

1. mark t on February 28th, 2009 at 4:30 am

   The turbo on a Cummins does not have a waste gate and does not “cut in” as you put it. What symptoms does your engine have? Does it have a lot of black smoke, poor acceleration? Just because you have a brand new turbo there could be other problems. The turbo could still be bad, not installed correctly (v-band torqued wrong), the exhaust could have a restriction, the air intake could be restricted, the prop or shaft could have something on it creating an overload for the engine.

2. bobin35 on March 1st, 2009 at 6:48 am

   some cummins engines do have a wastegate,i suggest removing the intake hose from the turbo and seeing if the impeller is spinning if the turbo wasnt prelubed it could be seized up

3. piglet50 on March 2nd, 2009 at 11:56 am

   could be a problem with your injectors

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