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Old 09-05-2016, 05:49   #61
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Re: Volvo Penta 2003T Injector Pumps

HP pump requires a feed pressure of 3-5 psi to be efficient. 2.1 Ft of head = 1 psi.
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Old 09-05-2016, 05:51   #62
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Re: Volvo Penta 2003T Injector Pumps

Thanks RC, sounds like you have a plan. Bypassing the fuel pump has to be worth a try. The less varibles the better. Good luck!
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Old 09-05-2016, 05:54   #63
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Re: Volvo Penta 2003T Injector Pumps

The HP fuel pump requires 3-5 psi to be efficient. 2.1 Ft of head = 1psi
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Old 09-05-2016, 06:03   #64
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Re: Volvo Penta 2003T Injector Pumps

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Thanks RC, sounds like you have a plan. Bypassing the fuel pump has to be worth a try. The less varibles the better. Good luck!
I don't like the idea of bypassing it now. I think I'll just lean it and if necessary I'll repair it with a kit. Our caretaker at our yacht club, who seems to know a lot, thinks it needs it, or I'll struggle to bleed all the air out. Not sure why completely, but in any case I'll hold off by passing it. Clean and repair it.
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Old 09-05-2016, 06:06   #65
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Re: Volvo Penta 2003T Injector Pumps

The other thing that might cause me some problems is putting the injector pumps back in. The injector technician measured the 'shim' on each pump and each in had the same. So he's given me a sheet of same size gasket to make shim's with. He believes it will get me going but not %100. And when he checked you can't purchase shim's for it anymore. So, I might have a little problem with that as well now.
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Old 09-05-2016, 06:12   #66
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Re: Volvo Penta 2003T Injector Pumps

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The HP fuel pump requires 3-5 psi to be efficient. 2.1 Ft of head = 1psi
Thats a handy tip. Cheers Doug, my old isuzu 3kr1 used to run (just) with no lift pump, but it probably wasnt efficient, and if the tank was low it wouldn't run. It would run from a jerrycan in the cockpit, with about a 1.5 ft head. So ideally I'd need to lift the tank up about six foot if ive got a pump issue. Good to know. Thanks!
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Old 10-05-2016, 00:56   #67
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Re: Volvo Penta 2003T Injector Pumps

In line jerk pumps are not as sensitive as over 20 Hp individual pump unit jerk pumps.
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Old 10-05-2016, 03:05   #68
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Re: Volvo Penta 2003T Injector Pumps

Well Shakey Doug, in your learned experience, does this look ok
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Old 10-05-2016, 03:06   #69
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Re: Volvo Penta 2003T Injector Pumps

It took a little to open it. It was practically seized shut
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Old 10-05-2016, 03:15   #70
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Re: Volvo Penta 2003T Injector Pumps

And after cleaning. I've ordered a kit to put in it though.
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Old 10-05-2016, 04:08   #71
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Re: Volvo Penta 2003T Injector Pumps

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In line jerk pumps are not as sensitive as over 20 Hp individual pump unit jerk pumps.
Thats useful to know. The 3kr1 had a bosch inline pump, as does my Nanni/kubota. This explains a lot. Thanks
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Old 10-05-2016, 04:24   #72
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Re: Volvo Penta 2003T Injector Pumps

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Well Shakey Doug, in your learned experience, does this look ok
Ha, yuck. Got to wonder how all that muck got through your racors! Good call Shakey Doug! Its great how much you can learn in a thread like this.
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Old 10-05-2016, 04:30   #73
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Re: Volvo Penta 2003T Injector Pumps

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Ha, yuck. Got to wonder how all that muck got through your racors! Good call Shakey Doug! Its great how much you can learn in a thread like this.
first thing I questioned. thank goodness the engine has a primary filter.

I can't see how it could have gotten past the racor. Which makes me wonder if it had been collecting in there for years, long before I added the racor. It had a cav filter when I purchased it.
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Old 10-05-2016, 05:26   #74
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Re: Volvo Penta 2003T Injector Pumps

Boags all round Cheers.
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Old 10-05-2016, 05:36   #75
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Re: Volvo Penta 2003T Injector Pumps

:thumbup:
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