bonesmalon

iTrader: (1)

You have to pull the pump to put the drains in and there's an an obvious flat location that you'll see once you have it out. I used an Allen head plug with an oring seal rather than a pipe thread which seals because of its tapered threads. These can create cracks from stress if over tightened hence the o-ring style I selected.

imartin

Ok, here is my update: pulled the fill screw out for port, then stbd eng and as predicted, a fuel/gear lube mix flowed out. Smelled of gas. Syringe set up wasnt good at pulling any fluid out. It helped when it came to filling. I did fill till steady stream of gear lube coming out. I guess i did what is required maintenance.

I then started engine at boat ramp. All seemed ok, Smartcraft showed 40-42 fuel psi.

Does this maintenance impact fuel psi? My reading is within specs, so shall all pressume all is good? How/when would I know if I have a problem?

I am glad I got that gas out of there.

Thx.

bonesmalon

iTrader: (1)

The pressure you're reading would be the pressure created by the electric EFI pump not the mechanical one you just serviced. The mech runs about 8 psig and the electric one about 43 psig if I recall

imartin

So Griff (or anyone else for that matter), what are you using to get the lube out? (assuming you don't have a bottom drain installed).

Griff

I don't have mech fuel pumps anymore. That is what I did on my other boats when I had them.

I used to change impellers every other year.
I would just remove the entire sea pump and tip it on its side and let the lube drain out on the years I was also changing the impeller.
On the years I wasn't changing the impeller, I would suck out what I could with the syringe/tube and then try and force/flush new lube in.

imartin

ok, that's what I did with the syringe set up. I likely flushed more in than needed, but I did so until new and clean lube flowed back out....

Thanks,

PARADOX

What oil to use in the fuel pump? Gear lube? synt. oil? I have to do this too, but I have them off.

bonesmalon

iTrader: (1)

Same gear oil you use in ur drives