Dickinson Newport diesel heater - no fuel flow - SailNet Community

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  #1  
Old 01-26-2014
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Dickinson Newport diesel heater - no fuel flow

I have a Dickinson Newport diesel heater, older model of course but still basically the same as the new ones. I didn't install it, came with the boat so I assume it worked OK at some point.
Anyway, it runs off a dedicated tank mounted about 12" above the height of the metering vale, gravity fed fuel. I've checked that the vent is clear (even tried with the filler cap off).
I get fuel to the metering valve, checked the debris screen and it's all clear, I get fuel out of the metering valve at about the right rate (haven't had a proper measurement but it drips out, and the drips get quicker as I open the valve more), I get fuel to the bottom of the entry pipe to the burner. That's as far as the fuel gets.
When I open the valve fully, no fuel gets into the burner itself. I have put a pipe on the outlet tube in the burner and I can suck fuel through so there is no blockage.
Manual says that on full opening, the burner should get a tablespoon or so of fuel in a few minutes. I get none.
Any diesel heater experts out that there can suggest something?
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Re: Dickinson Newport diesel heater - no fuel flow

You can down load the manual for free. It said to tap on the fuel line to remove air bubbles ( air lock ) .
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Re: Dickinson Newport diesel heater - no fuel flow

Yeah, I've read the manual several times, and tapped everything in sight, no difference, plus pulling the fuel right through to the burner should have freed any locks.
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Re: Dickinson Newport diesel heater - no fuel flow

Go here and page 33 should do it!
http://www.dickinsonmarine.com/Manua...ual-2011-2.pdf
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Old 01-26-2014
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Re: Dickinson Newport diesel heater - no fuel flow

I've read the manuals, I have done everything suggested in there, it doesn't make any difference. I can't figure out why, gravity feed, should be as simple as it gets but there is no fuel getting to the burner, it stops somewhere in the vertical burner tube. If I blow down the tube, fuel sprays into the burner pot, but with the valve open, no fuel flows into the burner.
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Old 01-27-2014
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Re: Dickinson Newport diesel heater - no fuel flow

Well, unless anyone has any bright ideas, I think I'll just have to start at one end of the system and work my way through the whole thing until I uncover any problems. It's got to be something simple.
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Re: Dickinson Newport diesel heater - no fuel flow

This is what I did with mine. Removing the clean-out plug was the trick. And I was surprised to find out how much carbon build up was in the bottom of the tube.
Hope this works for you.
Cleaning the Fuel Line
Any blockage in the fuel line from the oil-metering valve to the burner can
be cleaned by removing the clean-out plug situated directly under the burner.
The fuel lines themselves can be cleaned with compressed air or a pipe
cleaner or even blowing air through to remove any blockages. The plug then
must be replaced with tape sealant and checked for leaks. Tap the fuel line
once re-connected to clear any air locks.
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Re: Dickinson Newport diesel heater - no fuel flow

Yep, already had the clean-out plug out as well. Was only a few specks of crap on it.
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Re: Dickinson Newport diesel heater - no fuel flow

Maybe 12" of head isn't enough. Can you move the tank height up?
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Re: Dickinson Newport diesel heater - no fuel flow

Nope, unless I mount the tank above decks and that is going to be a little awkward
I assume the head is OK, the heater definitely worked at some point.
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