I have a gen 6 454, it uses the fuel pump/ water pump setup, does any one know there I can get a rebuild kit for it, the seal is leaking oil,...? Second I bought a holly red marine fuel pump, they say to mount below fuel tank but that's not happening lowest I can get it is mid way... It won't hold pressure when tank low on fuel, does any one recommend a fuel pump that sucks fuel???

only place ive been able to get them is mercury marine .they are made of stainless w rubber 2 seals are the same # and the very front 1 behind the pully is diff . you will need a puller for the pully and once off punch a hole in the seal and pry it out there will be a snap ring remove that and press the rest out take note on the 2 smaller seals they go opposit from each other .can be done in about an hour . just did 2 last week w brngs and seals .also when you take the fuel pump off you will notice gas in the cavity where gear oil should be
[ no your fuel pump is not bad ]its a very common thing just change the oil even if you put a new pump on same thing next year will happen .hope this helps

Ok appreciate it, are you running any electric pumps

Manley marine makes a 140GPH pump that can lift up to 16", model #4142 and its USCG certified.

I buy the bearings and seals from a local company. I rebuilt a couple 3 weeks ago, $35 each.

If you are leaking from a front seal, you still need to keep oil in the pump even if you block it off and go electric.

Do
U have a phone number for ur local
Guy, it's nice when
Ur talking to someone that knows

Ive seen where guys drill and tap the housing, so they can drain and fill the sea pump lube, as this is very common for them to get fuel soaked.

Appreciate all the help I'm going to try
Manly for a electric pump and get mechanical working

Personally, i'd take the merc sea pump/fuel pump setup over a holley electric pump any day.

I've heard from several sources the Holley is not a good choice their flow is way over rated.

If any one has the part numbers for the seals and
Bairings let me know thanks

Here are the part numbers and phone number. Pay with VISA and they will mail it to you. Great to work with.

FYI - I can not find the parts at any Mercruiser dealer. They told me they do not rebuild them anymore. After you pay for labor and parts its close to brand new price.

Here are the part numbers and phone number. Pay with VISA and they will mail it to you. Great to work with.

FYI - I can not find the parts at any Mercruiser dealer. They told me they do not rebuild them anymore. After you pay for labor and parts its close to brand new price.

Hey Jim, Have you been having good luck with those part #'s? I had one seal leak but I believe it was due to some gulling on the shaft.

Here you go Pantera232
http://www.offshoreonly.com/forums/do-yourself-boating-budget/233160-how-rebuilding-merc-sea-fuel-pump.html

Work great. I noticed the numbers on the list do not match the numbers on the boxes. They must have there own internal code. The bearings and seals are a major brand. Box is next to receipt so I can not think of the name.

Yes if there are any grooves in the shafts they will not last long. I had a small groove on one, I just seated the seal further down the shaft so it was not riding on the same area.

** I just looked at your thread, I remember reading it years ago. That is the exact same box and numbers. **

Is there a kit for the seapump/fuel pump bearing & cam that runs the mechanical fuel pump?

Manley marine makes a 140GPH pump that can lift up to 16", model #4142 and its USCG certified.

Did you mean Mallory. I have pair Mallory comp pump 4140M in my boat, They are good pumps.

is there a kit for the seapump/fuel pump bearing & cam that runs the mechanical fuel pump?

ttt

Does any oone know where to get the shaft with the cam on it?? Mine has the loose cover over it that is super sloppy.. its only producing 5.5 psi now

The cam is part of the shaft, but the sleeve over the cam is replaceable. The shaft is also replaceable.

I have yet to be able to find measurements of a good cam lobe on the sea pump shaft to know if it is within spec or not.

Shaft # 818366A1