Reply
 
Thread Tools Display Modes
 
Old 06-12-2012, 03:20 PM   #1
Senior Member
 
magicbus's Avatar
 
Join Date: Nov 2010
Posts: 460
Priming 5.9 QSB After Fuel Filter change

Sorry if this has been covered but search didn't help. When I change out my 2 micron on-engine filter do I let the lift pump refill the filter for a while before starting the engine? Any thoughts on how long? I don't see a bleed point anywhere. Apparently I got lucky last time by dumping the old filter contents to the new one and don't want to try that again now that I've become a bit more educated about diesels.

Dave
__________________
Advertisement

__________________
Barnegat Light NJ or Nantucket MA
magicbus is offline   Reply With Quote
Old 06-12-2012, 03:40 PM   #2
Guru
 
timjet's Avatar
 
Join Date: Apr 2009
Posts: 1,905
I'm not sure, go to boatdiesel.com and find out.
But to be on the safe side, fill the new filter with fresh diesel fuel and you're covered.
__________________

__________________
Tim
Tampa Bay
Carver 355 ACMY Twin Cummins Diesels Sold
timjet is offline   Reply With Quote
Old 06-12-2012, 04:13 PM   #3
Guru
 
jleonard's Avatar
 
Join Date: Jun 2008
Posts: 2,740
There is likely a bleed port on top of the filter houosing. Most engines have this feature. All the older Cummins did for sure, but I haven't spent any time nosing around a QSB.
__________________
Jay Leonard
Attitude Adjustment
40 Albin
Mystic,Ct. /New Port Richey,Fl
jleonard is offline   Reply With Quote
Old 06-12-2012, 04:39 PM   #4
Senior Member
 
magicbus's Avatar
 
Join Date: Nov 2010
Posts: 460
Ah but the problem with "fresh" fuel is that it has not been cleaned to the required 2 microns, but thanks for the boatdiesel.com tip. I think there is a screw in the top of the filter housing. I will try opening that and run the lift pump. I should have thought of that!

Thanks,
Dave
__________________
Barnegat Light NJ or Nantucket MA
magicbus is offline   Reply With Quote
Old 06-12-2012, 06:22 PM   #5
Guru
 
Anode's Avatar


 
City: Missourah
Country: USA
Vessel Name: M/V Scout
Vessel Model: Sundowner Tug 30'
Join Date: Jul 2010
Posts: 645
If it's a spin on vertically mounted I just prime with them slightly loose until I see some fuel seep and then tighten.
__________________
Chip

Deliveries & Yacht Services
www.captainchip.com
Anode is offline   Reply With Quote
Old 06-13-2012, 09:22 AM   #6
Scraping Paint
 
City: Fort Lauderdale
Vessel Model: CHB 48 Zodiac YL 4.2
Join Date: Oct 2007
Posts: 3,804
Quote:
Originally Posted by magicbus View Post
Ah but the problem with "fresh" fuel is that it has not been cleaned to the required 2 microns ...

For what it's worth, when you drain a cartridge filter, all but a very small amount of what comes out is from the non-filtered side of the element.

If you want to be really fussy about it, install it dry and use the lift pump to fill it, that way all the fuel goes through the element but you are more likely to have carpal tunnel problems than injection system problems.
RickB is offline   Reply With Quote
Old 06-13-2012, 10:26 AM   #7
Guru
 
Scary's Avatar
 
City: Walnut Grove Ca
Country: USA
Vessel Name: Cary'D Away
Vessel Model: Hatteras 48 LRC
Join Date: Apr 2012
Posts: 884
I guess that depends on what kind of lift pump

Quote:
Originally Posted by RickB View Post
For what it's worth, when you drain a cartridge filter, all but a very small amount of what comes out is from the non-filtered side of the element.

If you want to be really fussy about it, install it dry and use the lift pump to fill it, that way all the fuel goes through the element but you are more likely to have carpal tunnel problems than injection system problems.
Some pump housing on the Cummins have a priming plunger on the top of the filter mount. I believe that the Cummins is self bleeding so in theory you could just keep cranking. I usually refilled my filter with fresh fuel, but on one occasion I just cranked until the engine started, it took several restarts to clean up and run smooth. But it did bleed it self out. You would want a healthy battery bank.
Scary is offline   Reply With Quote
Old 06-13-2012, 02:46 PM   #8
Senior Member
 
honeybadger's Avatar
 
City: Hampstead,NC
Country: USA
Vessel Name: HoneyBadger
Vessel Model: 1990 Harkers Island Trawler Typical wooden hull with a Carolina flare and no deadrise at the stern
Join Date: May 2012
Posts: 194
On the Yanmar last winter it ran out of fuel due to the primary filter being clogged. It was a on the fly fix i replaced both filters filling them with fresh Diesel first, looked all over for a pump or bleeder, didnt find it, So i had the Captain spin the motor over after i cracked the seal on each injector, foam came out for about 5 seconds then fuel, Stopped tightened the injectors back up the boat fired up ran smooth and we were off in less than 20 mins. This is how we started an old diesel tractor if it ran out of fuel when i was a kid.
__________________

honeybadger is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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





All times are GMT -5. The time now is 12:03 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012