Fuel lifting pump making noise when first starting engine - Page 2 - SailNet Community
 14Likes
Reply
 
LinkBack Thread Tools
post #11 of 23 Old 05-10-2019
Master Mariner
 
capta's Avatar
 
Join Date: Jun 2011
Location: somewhere south of civilization
Posts: 6,939
Thanks: 135
Thanked 365 Times in 353 Posts
Rep Power: 8
 
Re: Fuel lifting pump making noise when first starting engine

Quote:
Originally Posted by krisscross View Post
Yes, its a NAPA pump that PO installed between the Racor filter and the injection pump. Any idea what fuel delivery pressure is needed there? I would like to have a backup and guy at NAPA tells me I need to know that. I have read somewhere that it’s about 6 to 8 psi.
It's not about pressure at that point in the system, just GPH. Obviously, your pump must pump enough fuel for the diesel to run.
We on sailboats don't have much problem with even the smallest pumps rated by GPH but imagine a motor vessel using 75 to over 100 GPH per engine. That's when electric fuel pumps start getting expensive.
krisscross likes this.

"Any idiot can make a boat go; it takes a sailor to stop one." Spike Africa aboard the schooner Wanderer in Sausalito, Ca. 1964.
“Believe me, my young friend, there is nothing - absolutely nothing - half so much worth doing as simply messing about in boats.” ― Kenneth Grahame, The Wind in the Willows

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

facebook.com/svskippingstone
capta is online now  
Sponsored Links
Advertisement
 
post #12 of 23 Old 05-10-2019
Master Mariner
 
capta's Avatar
 
Join Date: Jun 2011
Location: somewhere south of civilization
Posts: 6,939
Thanks: 135
Thanked 365 Times in 353 Posts
Rep Power: 8
 
Re: Fuel lifting pump making noise when first starting engine

Quote:
Originally Posted by wsmurdoch View Post
For a replacement pump, spend some quality time on the Walbro fuel pump web site. https://www.walbro.com They make USCG approved marine fuel pumps and are the standard Many people sell them.

Bill
If I was running a gas engine, I'd certainly agree with you, but on our small diesels where ignition protection is unnecessary, the cheap ones seem to do just fine.
krisscross likes this.

"Any idiot can make a boat go; it takes a sailor to stop one." Spike Africa aboard the schooner Wanderer in Sausalito, Ca. 1964.
“Believe me, my young friend, there is nothing - absolutely nothing - half so much worth doing as simply messing about in boats.” ― Kenneth Grahame, The Wind in the Willows

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

facebook.com/svskippingstone
capta is online now  
post #13 of 23 Old 05-10-2019
Senior Member
 
Join Date: Aug 2010
Location: The Bahamas
Posts: 3,211
Thanks: 3
Thanked 122 Times in 120 Posts
Rep Power: 9
 
Capta is right.
Im outta this one....
RegisteredUser is online now  
 
post #14 of 23 Old 05-11-2019
Member
 
Join Date: Feb 2018
Posts: 93
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 2
 
Automotive technician here; I recommend my customers avoid NAPA parts if at all possible. If it fails in a car, no big deal. Boats are not cars.

Also, a failed diesel lift pump can cause the injection pump to fail.
Minnewaska and krisscross like this.
SeanM26 is online now  
post #15 of 23 Old 4 Weeks Ago
Member
 
Cassidy's Avatar
 
Join Date: Apr 2019
Location: Bay of Islands New Zealand
Posts: 67
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 1
 
Re: Fuel lifting pump making noise when first starting engine

Typically a Yanmar has a fuel bypass that sends excess fuel that the engine doesn’t need to run, back to the tank. Well, at least the 4-cyl ones do, no reason to think the smaller ones are different.

So if the engine switch is on and the engine isn’t started, the pump you describe will continue clicking interminably as the fuel cycles back to the tank. These pumps click each time they deliver fuel, yours may click more frequently while the engine runs as a result of the through flow system.

I installed a diesel flow pump normally fitted to a Ford Explorer, pumps adequate volume for a 4JH4E and gently buzzes in the background. The downside is that the fuel is warmed by the through-flow and brings the temperature of the whole fuel tank up. I haven’t had problems yet but I often wonder about condensation, diesel bug and all those other horror stories.
krisscross likes this.
Cassidy is online now  
post #16 of 23 Old 4 Weeks Ago
Senior Member
 
overbored's Avatar
 
Join Date: Oct 2010
Location: Dana Point, Ca
Posts: 2,568
Thanks: 2
Thanked 184 Times in 181 Posts
Rep Power: 9
 
Re: Fuel lifting pump making noise when first starting engine

Quote:
Originally Posted by Cassidy View Post
Typically a Yanmar has a fuel bypass that sends excess fuel that the engine doesn’t need to run, back to the tank. Well, at least the 4-cyl ones do, no reason to think the smaller ones are different.

So if the engine switch is on and the engine isn’t started, the pump you describe will continue clicking interminably as the fuel cycles back to the tank. These pumps click each time they deliver fuel, yours may click more frequently while the engine runs as a result of the through flow system.

I installed a diesel flow pump normally fitted to a Ford Explorer, pumps adequate volume for a 4JH4E and gently buzzes in the background. The downside is that the fuel is warmed by the through-flow and brings the temperature of the whole fuel tank up. I haven’t had problems yet but I often wonder about condensation, diesel bug and all those other horror stories.
the Yanmar does have a return line on the 4 cylinder and smaller engines but it is from the high pressure injectors and not the lift pump side of the injection pump so it only returns fuel when the engine is running. the reason the engineers have the fuel return back to the fuel tank is to cool the excess fuel that is coming back from the hotter fuel injectors. most Yammers have a mechanical engine driven lift pump and really don't need an electric lift pump unless the tank is placed to low in the system to meet the Yanmar requirements.
Capt Len and krisscross like this.

"FULL TILT II" 2011 BENETEAU FIRST 30
"GOLD RUSH" PRINDLE 16
overbored is online now  
post #17 of 23 Old 4 Weeks Ago
Senior Member
 
Join Date: Oct 2011
Location: Nanaimo B.C.
Posts: 4,426
Thanks: 5
Thanked 135 Times in 134 Posts
Rep Power: 8
 
Re: Fuel lifting pump making noise when first starting engine

A thought... GMC's with unit injectors pump an immense amount of fuel back to the tank to cool their injectors,Little engines do the same but more discreetly. If your system has a short closed loop to save running a return line back to tank any heat or bubbles or crud stays in the loop
Capt Len is online now  
post #18 of 23 Old 4 Weeks Ago
Master Mariner
 
capta's Avatar
 
Join Date: Jun 2011
Location: somewhere south of civilization
Posts: 6,939
Thanks: 135
Thanked 365 Times in 353 Posts
Rep Power: 8
 
Re: Fuel lifting pump making noise when first starting engine

Quote:
Originally Posted by SeanM26 View Post
Automotive technician here; I recommend my customers avoid NAPA parts if at all possible. If it fails in a car, no big deal. Boats are not cars.

Also, a failed diesel lift pump can cause the injection pump to fail.
lol Well you see, that's the difference between us marine engineers and you Automotive technicians. Whereas you've got to go buy a replacement, we've got one or two spares stuck away in a drawer somewhere and can make the change before you've got your order into NAPA guy.
Two completely different mentalities; sadly, we don't have a NAPA store out there on the briny. lol

"Any idiot can make a boat go; it takes a sailor to stop one." Spike Africa aboard the schooner Wanderer in Sausalito, Ca. 1964.
“Believe me, my young friend, there is nothing - absolutely nothing - half so much worth doing as simply messing about in boats.” ― Kenneth Grahame, The Wind in the Willows

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

facebook.com/svskippingstone
capta is online now  
post #19 of 23 Old 4 Weeks Ago
Member
 
Join Date: Aug 2011
Location: Cambridge MD
Posts: 44
Thanks: 0
Thanked 3 Times in 3 Posts
Rep Power: 0
 
Re: Fuel lifting pump making noise when first starting engine

Get a Facet fuel pump. https://www.facet-purolator.com/ They usually last the life of the engine. I like the Posi-Flo and Gold Flo pumps. A cheap $20 backup isn't a bad idea though.
krisscross likes this.
kmacdonald5 is offline  
post #20 of 23 Old 4 Weeks Ago Thread Starter
Senior Member
 
krisscross's Avatar
 
Join Date: Feb 2013
Location: Florida
Posts: 4,055
Thanks: 40
Thanked 218 Times in 217 Posts
Rep Power: 7
 
Re: Fuel lifting pump making noise when first starting engine

Just bought a replacement pump to have as a spare. It’s a Facet pump. About $85 at NAPA.
Thank you all for your help. As always, very useful. Best sailing forum I know.

Be kind, for everyone you meet is fighting a hard battle.
Plato
krisscross is online now  
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Electrical wires inside mast making much noise akin_alan Gear & Maintenance 19 07-07-2018 12:17 AM
Fuel Pump Noise BristolTucker Diesel 13 05-21-2015 05:38 PM
Fuel consumption vs. speed vs.noise wannabsailor General Discussion (sailing related) 3 02-07-2014 09:49 PM
Engine/Drive Train Noise dinkum1 Atomic 4 1 11-29-2006 12:52 AM
Engine/Drive Train Noise dinkum1 Bristol 2 11-18-2006 08:11 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome