Go Back  The Hull Truth - Boating and Fishing Forum > BOATING FORUMS > The Boating Forum
Reload this Page >

330 Cummins 6bta's - Fuel Filter Change

Notices
Like Tree4Likes
  • 1 Post By fireisland1
  • 1 Post By Corndog38
  • 2 Post By 23Seacraft

330 Cummins 6bta's - Fuel Filter Change

Old 04-08-2019, 07:12 PM
  #1  
Senior MemberCaptains Club Member
Thread Starter
 
Join Date: Apr 2003
Location: Chestertown,MD US
Posts: 815
Default 330 Cummins 6bta's - Fuel Filter Change

Looking to replace both the primary and secondary fuel filters on the 330 Cummins. Are there any tricks in changing both of these filters?j My plan is to fill up each new filter with diesel fuel prior to installing, however, once I have completed the installation, will I need to bleed the fuel system to get any air out? Couple items to note, both the starboard and port fuel lines are equipped with AXI magnetic fuel conditioners and then the primary fuel filter housing have the primer pumps. Let me know your thoughts, thanks in advance.

Last edited by 23Seacraft; 04-09-2019 at 07:06 AM.
23Seacraft is offline  
Old 04-08-2019, 07:18 PM
  #2  
Admirals Club Admiral's Club Member
 
Join Date: Sep 2012
Location: Destin FL
Posts: 2,488
Default

Originally Posted by 23Seacraft View Post
Looking to replace both the primary and secondary fuel filters on the 330!Cummins. Are there any tricks in changing both of these filters? My plan is to fill up each new filter with diesel fuel prior to installing, however, once I have completed the installation, will I need to bleed the fuel system to get any air out? Couple items to note, both the starboard and port fuel lines are equipped with AXI magnetic fuel conditioners and then the primary fuel filter housing have the primer pumps. Let me know your thoughts, thanks in advance.

i have the same engines. Just make sure to shut your fuel off first. Fill new filters with diesel and reinstall. Open fuel valve and turn engines on.

helpful hint: write date on side of filter and keep a good log book.

good luck!

preston <><
gamefish25 is offline  
Old 04-08-2019, 07:22 PM
  #3  
Admirals Club Admiral's Club Member
 
fireisland1's Avatar
 
Join Date: Jun 2011
Posts: 4,200
Default

Never fill final [ last chance] fuel filter by hand. If even the smallest contamination [2 micron ] goes in, it goes right into the injector pump.
BOSBoatMan likes this.
fireisland1 is offline  
Old 04-08-2019, 07:32 PM
  #4  
Senior MemberCaptains Club Member
Thread Starter
 
Join Date: Apr 2003
Location: Chestertown,MD US
Posts: 815
Default

Originally Posted by fireisland1 View Post
Never fill final [ last chance] fuel filter by hand. If even the smallest contamination [2 micron ] goes in, it goes right into the injector pump.
If not by hand with the engine (secondary) fuel filter, how do you fill it?
23Seacraft is offline  
Old 04-08-2019, 08:26 PM
  #5  
Senior Member
 
Join Date: May 2012
Location: St. Augustine, FL
Posts: 735
Default

I never even bother to add fuel to the primaries. Just close your fuel stops. Change both filters. I leave the secondary a little loose and after opening the lines again use the primer button on the fuel pump until I get fuel dribbling down the secondary. Loosen it again pump a few more times and tighten up.
MackSea70 is offline  
Old 04-08-2019, 09:39 PM
  #6  
Senior Member
 
Join Date: Jun 2014
Location: Middle Sound, NC
Posts: 7,572
Default

If you put the sec filter on dry, you will blister your thumb on the primer pump. I always fill the secondary (and primary) after changing filters on these. These are not the super finicky common rail engines. Just a dumb (but sweet) P7100 pump that has guts lubed by engine sump oil. Not that picky.

I have the same P7100 on my 450C. I change the sec when I change oil (about 300hrs) and even when filter is topped up on install, engine might stall after start and may need some primer pumping. Always clears up with a couple primes and starts, never had to bleed injector lines.
Corndog38 is offline  
Old 04-09-2019, 03:23 AM
  #7  
Senior MemberCaptains Club Member
 
Join Date: Apr 2005
Location: Jersey Shore
Posts: 3,980
Default

I have had Volvos, Detroits, and now Yanmars so mabe I shouldn’t comment on your Cummins but for 30 years I have prefilled the filters by hand without issue.
offshorebri is offline  
Old 04-09-2019, 04:05 AM
  #8  
Admirals Club Admiral's Club Member
 
Join Date: Dec 2011
Location: Jupiter
Posts: 2,822
Default

I filled my Cummins and Racors to the top each time before installing them. Then maybe 5-10 pumps on the primer and you’re set.

The mechanic who did the first change for me (I was learning) filled the racors and only half filled the primaries. Then when he turned over the engines he had the throttles cracked to about 30%. They’d sputter and kick to get started but they “self-primed” and it worked for him.

I suppose there is more than one way to get it done but I prefer my way.
Tainui is offline  
Old 04-09-2019, 05:29 AM
  #9  
Admirals Club Admiral's Club Member
 
Join Date: Jan 2007
Posts: 11,876
Default

read your manual

my diesel has specific fuel priming instructions

i do not pre-fill

i remove, replace, open bleed valve, press hand button 50+ times until diesel is flowing without air, close bleed valve, done
mystery is offline  
Old 04-09-2019, 06:53 AM
  #10  
Admirals Club Admiral's Club Member
 
Join Date: Dec 2012
Posts: 538
Default

Pre-filling, at least somewhat saves a lot of aggravation. I would say do it if you have the access to be able to. Depending on the boat the secondary filter is it can be a PITA to get to.
hamma job is offline  
Old 04-09-2019, 07:05 AM
  #11  
Senior MemberCaptains Club Member
 
Join Date: Feb 2003
Location: Falmouth, MA
Posts: 1,098
Default

I prefill my filters as well. I also warm up my engines a little first. The primer bulb is very hard to push down on a cold engine, but if you warm the engines a bit then they pump much easier. I also advance the throttle when I fire them over and back down when they stop sputtering.
riprunner is offline  
Old 04-09-2019, 07:06 AM
  #12  
Senior MemberCaptains Club Member
Thread Starter
 
Join Date: Apr 2003
Location: Chestertown,MD US
Posts: 815
Default

Thanks for all the feedback, sounds straight forward enough. Would anyone happen to have a picture/location of the primer pump?
23Seacraft is offline  
Old 04-09-2019, 07:17 AM
  #13  
Senior Member
 
Join Date: Jun 2014
Location: Middle Sound, NC
Posts: 7,572
Default

Look at side of injection pump (left hand fwd upper part of engine, the thing with the six steel lines coming out on the top, all in a row), primer pump is little round knob coming out of the side of the pump. Push on it and it moves a little (a little!) fuel each push.
BOSBoatMan likes this.
Corndog38 is offline  
Old 04-09-2019, 07:27 AM
  #14  
Admirals Club Admiral's Club Member
 
Join Date: Jun 2011
Location: Boston, MA
Posts: 1,188
Default

You might have to drop the raw water pipe, at least I do on mine. Otherwise you're really in for a world of pain.
BOSBoatMan is offline  
Old 04-09-2019, 08:56 AM
  #15  
Senior Member
 
Join Date: Apr 2012
Posts: 502
Default

Originally Posted by offshorebri View Post
I have had Volvos, Detroits, and now Yanmars so mabe I shouldn’t comment on your Cummins but for 30 years I have prefilled the filters by hand without issue.
If you have a common rail motor, do not refill the on-engine filter. A microscopic piece of grit can cause significant damage.
cdrhoek is offline  
Old 04-16-2019, 12:09 PM
  #16  
Senior MemberCaptains Club Member
Thread Starter
 
Join Date: Apr 2003
Location: Chestertown,MD US
Posts: 815
Default




Originally Posted by 23Seacraft View Post
Thanks for all the feedback, sounds straight forward enough. Would anyone happen to have a picture/location of the primer pump?
Found it, replaced the filters this past weekend, was pretty straight forward and motor's fired right up after getting the filters filled and lines primed.
BOSBoatMan and Tainui like this.
23Seacraft is offline  

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 On
Refbacks are Off


Thread Tools
Search this Thread