Mercruiser 3.0 carb rebuild question

[alldodge]

Looked your motor up and you should have part number 8M0073435 which uses a clear fuel water separator (item 1)

http://www.mercruiserparts.com/bam/subassembly/30914/1604/110

This pump only uses one gasket so shims will not be the issue. I'm guessing now that the pump has been replaced with one which uses a canister pump.

 

[rm2508j]

I see no P#, its kinda cramped back there. Lol. But it has a removable metal fuel bowl on the bottom w/ a filter in it. Do u think I could get an adjustable FP regulator from an auto parts store (if there is such an item)and plumb it inline

 

[alldodge]

I see no P#, its kinda cramped back there. Lol. But it has a removable metal fuel bowl on the bottom w/ a filter in it. Do u think I could get an adjustable FP regulator from an auto parts store (if there is such an item)and plumb it inline

Yes, need to get one like from Holley P/N 12-803

https://www.holley.com/products/fue...regulators/carbureted_regulators/parts/12-803

 

[rm2508j]

AllDodge you are awesome!!! I will try my local auto parts store to see if the have it or something similar. I am under a huge time constraint, Im taking the boat on vacation wed., so I dont have the time to order it online. I haven't even had this thing out for sea trails yet w/ the freshly rebuilt motor, ugh. Hopefully all goes well with the old girl! Thank you all so much for all the input!

 

[Scott06]

If it starts and runs fine, run it on vacation, replace the pump later. worst that will happen is your plugs foul from too much gas.

 

[rm2508j]

Scott06, I'm thinkin the same. I may mess w/ it on vacation, whether I do the spacer on the pump or plumb in a pressure regulator. I'm not the sit still type especially if I know there is an issue with something. Thanks for your input! This forum is great! I read it often and everytime I do I always learn something!

 

[rm2508j]

Flooding problem solved!!!! I installed the new gasket/spacer on the fuel pump P# 21-8M0108647 and like magic no more flooding, boat starts normal, no more WOT starting. Boat is purring like a kitten. Now just some break in time on this fresh engine and hopefully just happy boating from this point on! Vacation saved!!!! I want to thank All on this forum for your time and expertise! I wish everyone a very safe and awesome 4th of July weekend. Thanks again!!!

 

[alldodge]

Cool, thanks for let us know. Have a great 4th