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Nissan diesel engines, and the people who love them
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Post Number:#1  PostPosted: Mon Jun 23, 2014 2:15 pm 
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Joined: Tue Feb 05, 2013 10:09 pm
Posts: 21
Location: Vancouver
Here we go again,

I have two sd33's in the boat. While doing test runs at 2800rpm starboard engine rpms fell to 2200 and would go no higher.
Out of gear engine will rev up without issue. This condition only happens under load. Port engine rpm's fine. I replaced the fuel filters with no effect. I removed the injectors and had them rebuilt at FH injection. Now engine runs great but only goes to 2500rpm.
What next?? I'm hoping that I have a fuel restriction somewhere in the system in the tank or lines. Would it be the inj pump? otherwise the motor runs fine.
What would you do?

Thanks for any input.

Stef


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Post Number:#2  PostPosted: Thu Jul 10, 2014 6:13 pm 
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Joined: Sun Jan 24, 2010 12:20 pm
Posts: 249
Location: Anderson, SC
Recheck the fuel filters. If they are gasoline rated (not diesel), fuel starvation is a result.

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Post Number:#3  PostPosted: Thu Nov 06, 2014 9:00 am 
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Joined: Tue Feb 05, 2013 10:09 pm
Posts: 21
Location: Vancouver
Update
Reply to previous post... I have the same filtering the other motor with no issues.

I've replaced rubber fuel lines , re changed filters, cleaned the inlet pump filter screen, rebuilt lift pump, ran out of a jerry can (bypassed tank)......no change. I'm about to pull the injector pump and send it in to get checked and recalibrated, expensive.
Any ideas????


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Post Number:#4  PostPosted: Tue Nov 11, 2014 7:01 am 
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Joined: Fri Aug 31, 2007 6:49 am
Posts: 806
Location: Cochrane Alberta Canada
Try winding the smoke screw in 1/4 turn and see what happens then.
Go in 1/4 turn increments.

Keep track of how far you move it .

( yes, in is more out is less )

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