Fuel pump preventive maintenance

[Barnacle_Bill]

1983 150 Merc. How often do you replace the check valves as a matter of preventive maintenance?

 

[TxShorty]

Re: Fuel pump preventive maintenance

The kit is cheap, has good instructions, and the whole job takes about 10 minutes.... <br />Maintainence is ALWAYS better too often than not often enough....<br />Annually or every 50 running hours is the recommendation from Merc (I think!)

 

[rodbolt]

Re: Fuel pump preventive maintenance

at least every 3 season.<br /> like TXshorty says, <br /> on a car it will leave ya walking, on a 2 stroke outboard it can take out the crank and pistons and leave ya paddling.<br /> and at the rebuild the fuel pump kit,like water pumps and t-stats and pressure diaphrams, it all cost the same ya just add more parts and labor.

 

[Barnacle_Bill]

Re: Fuel pump preventive maintenance

I was curious as they don't include them with the fuel pump kit. I don't know if they have ever been replaced but I think I'll put it to the top of my list.

 

[rodbolt]

Re: Fuel pump preventive maintenance

if you have the oblong pump and the round metal cased check valves they normally last a long long time. the pulse diaphrams are rather shortlived.<br />in the case of some oil injected models a leaking diaphram will flood certain cylinders with raw fuel and make the oil/fuel ratio to lean for proper lubrication and a weak diaphram may lean out the air/fuel ratio creating piston failure.

 

[Barnacle_Bill]

Re: Fuel pump preventive maintenance

Thanks for the info. I put a kit in about every other year but it occured to me I have never done anything with the check valves. Anyway, they will be in later this week. Certainly can't hurt.