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Old 04-16-2021, 02:47 PM   #41
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Fuel problem

If the Raycor vacuum didnít change, the engine filters are suspect. I would change them before suspecting the lift pump.
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Old 04-16-2021, 03:00 PM   #42
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Walbro FRB-13 Fuel Pump - Industrial & Marine

FRB-11 is good also.
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Which Walbro did you choose?
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Old 04-16-2021, 08:51 PM   #43
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If it has not been noted earlier; If you keep the mechanical pumps, your engine will run without any electrical power.
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Old 04-17-2021, 05:53 AM   #44
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Absolutely correct with no electrical power but how would one start the boat to begin with?
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If it has not been noted earlier; If you keep the mechanical pumps, your engine will run without any electrical power.
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Old 04-17-2021, 10:44 AM   #45
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What if your alternator crapped out 100 miles away from the dock?
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Absolutely correct with no electrical power but how would one start the boat to begin with?
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Old 04-17-2021, 11:05 AM   #46
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What if your alternator crapped out 100 miles away from the dock?
I have two alternators plus solar and 660ah of batteries which could run those pumps for days. I donít think itís a significant risk.
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Old 04-17-2021, 02:57 PM   #47
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Exactly.
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I have two alternators plus solar and 660ah of batteries which could run those pumps for days. I donít think itís a significant risk.
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Old 04-17-2021, 03:04 PM   #48
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A Walbro pump draws 2.3 amps. A 660AH bank drawn down to 50% would run that pump continuously for six days. Do you still think this could ever be a problem?
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What if your alternator crapped out 100 miles away from the dock?
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Old 04-18-2021, 01:00 AM   #49
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Not for you. But not all boats have lots of backup power systems (or twins).
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I have two alternators plus solar and 660ah of batteries which could run those pumps for days. I donít think itís a significant risk.
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Old 04-18-2021, 01:07 AM   #50
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When my boat is off the dock, I'm running more than a couple electric pumps. We have nav equipment, autopilot, microwave, lights, computer, cell phone chargers running, etc. I have backup systems too. But knowing my Lehmanns will run and run and run on diesel alone is added security to me. Obviously you think you are immune to an electrical failure. I was taught good seamanship is thorough mitigation of failures.
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A Walbro pump draws 2.3 amps. A 660AH bank drawn down to 50% would run that pump continuously for six days. Do you still think this could ever be a problem?
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Old 04-18-2021, 04:03 AM   #51
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So, now I am a bad seaman because I do not agree that this is an issue with anywhere close to significant risk. Rather arrogant of you methinks. If both of my alternators fail, even with all those loads you mention, I can easily run off my batteries to get to the next port. Of course, I would not be running extraneous equipment such as a microwave and one could easily operate without the autopilot or the MFD (backup tablet for navigation) or the cell phone charger, etc, etc. Or, the electric pumps could have been wired originally to the separate bank of generator batteries which would support the pumps for days. And, speaking of generators, a genny could be pressed into service at any time. Quite frankly, this is just more of the fear mongering we often see on this forum.

So, Bligh, just wondering. Do you worry about being a hundred miles from nowhere driving your vehicle and having your alternator fail and running off your battery. No. I thought not. You would never give it a thought. Sir, you are grasping at straws just so you can demonstrate that your choice is the only wise choice. It is not. Quite frankly, just my opinion, but I think an electric pump instead of a mechanical pump is a wiser choice. A Walbro pump is good for 18,000 hours of continuous duty. What happens to your engine when the diaphragm on the mechanical pump tears and diesel fuel contaminates the lube oil? Yup, bearings wiped, engine trashed. An unlikely event, yes, but far more likely than getting stranded with no juice to run a low draw electric pump.
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When my boat is off the dock, I'm running more than a couple electric pumps. We have nav equipment, autopilot, microwave, lights, computer, cell phone chargers running, etc. I have backup systems too. But knowing my Lehmanns will run and run and run on diesel alone is added security to me. Obviously you think you are immune to an electrical failure. I was taught good seamanship is thorough mitigation of failures.
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Old 04-18-2021, 05:44 PM   #52
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