Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 05-01-2011, 16:54   #1
Registered User

Join Date: Apr 2007
Location: Humacao, Puerto Rico
Boat: Beneteau 456
Posts: 429
Images: 8
In-line Hand Pump in Diesel Supply Line . . .

I installed an outboard inline primer pump in my diesel supply line to make it easier to bleed my 4108 Perkins when I replaced filters. It worked fine for about a year but last weekend we sailed from Humacao to Culebra PR and upon arrival as we were anchoring, the engine began to accelerate and de-accelerate as when a filter is clogged. It finally died just when we dropped the anchor. I replaced the Racor and tried running the engine without any luck. I then noticed the primer pump was sucked and wouldn't fill up. As it turns out the internal check-valve was stuck. I replaced it and everything worked fine.

My question the is if there is a better option to help bleed the engine?
__________________

__________________
avazquez is offline   Reply With Quote
Old 05-01-2011, 17:18   #2
Marine Service Provider

Join Date: Oct 2007
Boat: Endeavour 42CC
Posts: 1,182
in line electric fuel pump. small, simple, cheap
__________________

__________________
gettinthere is offline   Reply With Quote
Old 05-01-2011, 17:27   #3
Registered User
 
four winds's Avatar

Join Date: Oct 2010
Location: Wandering the US Gulf Coast
Boat: 78 Pearson323 Four Winds
Posts: 2,138
When using an inline electric pump in addition to the lift pump, does it have to run anytime the engine is used?

Or only during priming and bleeding?

If turned off the fuel flows through it unhindered?
__________________
four winds is offline   Reply With Quote
Old 05-01-2011, 17:40   #4
Senior Cruiser
 
Minggat's Avatar

Cruisers Forum Supporter

Join Date: Apr 2008
Location: Hawaii, South Pacific bound
Boat: Islander 36
Posts: 1,221
Yeah, I did that wit h my 4-108 as well. I wound up with a major leak at the bulb after about the same time.

Electric fuel pump. Make sure it's for diesel, not gas. Should be able to run thru it, but better to give yourself options. I plumbed mine in with a bypass. That way I can prime the injectors, then take it out of line. Or run thru it, which is also good if your lift pump fails. But you could then wind up pumping fuel into the crankcase if you pump thru the lift pump.

Point is, give yourself options... IMHO
__________________
Minggat
Minggat is offline   Reply With Quote
Old 05-01-2011, 17:55   #5
Registered User

Join Date: Apr 2007
Location: Humacao, Puerto Rico
Boat: Beneteau 456
Posts: 429
Images: 8
Quote:
Originally Posted by Minggat View Post
Yeah, I did that wit h my 4-108 as well. I wound up with a major leak at the bulb after about the same time.

Electric fuel pump. Make sure it's for diesel, not gas. Should be able to run thru it, but better to give yourself options. I plumbed mine in with a bypass. That way I can prime the injectors, then take it out of line. Or run thru it, which is also good if your lift pump fails. But you could then wind up pumping fuel into the crankcase if you pump thru the lift pump.

Point is, give yourself options... IMHO
Thats what I thought, a bypass with a switched pump. Where do you get the DC from?
__________________
avazquez is offline   Reply With Quote
Old 05-01-2011, 18:16   #6
Senior Cruiser
 
Minggat's Avatar

Cruisers Forum Supporter

Join Date: Apr 2008
Location: Hawaii, South Pacific bound
Boat: Islander 36
Posts: 1,221
That's a fair guestion which should be easily answered. But my boat is on the other side of the world from me and I just don't remember. As I thought about it, at first I thought I must have used the igntion switch, but that would also power my oil pressure alarm. So the answer is.. I dunno. Sorry

If you shut down the engine, that happens mechanically at the injector pump. So if you use a different source than the ignition switch you would need to remember that the fuel pump is still powered. You would not hear it because once it deadheads, it shuts itself off.
__________________
Minggat
Minggat is offline   Reply With Quote
Old 05-01-2011, 18:42   #7
Registered User
 
four winds's Avatar

Join Date: Oct 2010
Location: Wandering the US Gulf Coast
Boat: 78 Pearson323 Four Winds
Posts: 2,138
I hadn't thought about a bypass method of installation.

Pumping fuel into the crankcase after a lift pump diaphragm failure was my concern. In that case an inline pump could not act as a backup anyway.

I currently have a bulb inline but it just doesn't look like a good idea to me.
__________________
four winds is offline   Reply With Quote
Old 05-01-2011, 19:03   #8
Senior Cruiser
 
Minggat's Avatar

Cruisers Forum Supporter

Join Date: Apr 2008
Location: Hawaii, South Pacific bound
Boat: Islander 36
Posts: 1,221
Yes. But with emergency connections you could also bypass the lift pump.
__________________
Minggat
Minggat is offline   Reply With Quote
Old 05-01-2011, 19:15   #9
Registered User
 
four winds's Avatar

Join Date: Oct 2010
Location: Wandering the US Gulf Coast
Boat: 78 Pearson323 Four Winds
Posts: 2,138
That's exactly what I was thinking. Something on hand to solve that problem at sea if needed.

I'm a couple of months from my first long coastal cruise (west coast FL) and trying to become as prepared as possible. I can fix almost anything if I have the parts and tools available.

Thanks for this discussion everyone.
__________________
four winds is offline   Reply With Quote
Old 05-01-2011, 19:52   #10
Mooderator
 
capngeo's Avatar

Cruisers Forum Supporter

Join Date: Jul 2010
Location: Key West & Sarasota
Boat: Cal 28 "Happy Days"
Posts: 4,211
Images: 12
Send a message via Yahoo to capngeo Send a message via Skype™ to capngeo
I've been using a "bulb" for about 10 years now on the same one!
__________________
Any fool with a big enough checkbook can BUY a boat; it takes a SPECIAL type of fool to build his own! -Capngeo
capngeo is offline   Reply With Quote
Old 05-01-2011, 20:04   #11
Registered User

Join Date: Apr 2007
Location: Humacao, Puerto Rico
Boat: Beneteau 456
Posts: 429
Images: 8
SOMETHING LIKE THIS?

Click image for larger version

Name:	FUELSETUP.jpg
Views:	225
Size:	77.8 KB
ID:	22594
__________________
avazquez is offline   Reply With Quote
Old 05-01-2011, 20:05   #12
Registered User

Join Date: Apr 2007
Location: Humacao, Puerto Rico
Boat: Beneteau 456
Posts: 429
Images: 8
Wow

Quote:
Originally Posted by capngeo View Post
I've been using a "bulb" for about 10 years now on the same one!
What brand?

Is it in-line or on a bypass?

Is it located in the engine room?
__________________

__________________
avazquez is offline   Reply With Quote
Reply

Tags
diesel

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Line for a Preventer mestrezat Seamanship & Boat Handling 4 02-09-2010 18:51
Chlorine Tablet Sitting in Seawater Supply Line rebel heart Plumbing Systems and Fixtures 32 30-01-2010 00:51
Jerry Can hand pump Reality Check Plumbing Systems and Fixtures 6 25-05-2008 09:17
Clear fuel line for Diesel Wildrice Engines and Propulsion Systems 2 22-03-2008 09:00
Diesel Fuel Line Switch Cabriole Engines and Propulsion Systems 3 10-06-2003 07:13



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:21.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.