89 40hp 4 cylinder problems...

[tattoo]

Hey guys first off i wanna say nice forums you got here...i got a 89 40hp 4cylinder classic and i find if i trim the motor all the way up it becomes very hard to start.Is their any issues with carbs when trimed up all the way?It also quit pumpin water the other day.I ordered new gaskets and impellar.Motor never let me down last year just started this year.The trim wont hold anymore either it falls down,can the cylinder be rebuilt?

thxs

 

[CharlieB]

Re: 89 40hp 4 cylinder problems...

The carb floats do not compensate well for a trimmed motr , the fuel level is not the same as when level.

Level the motor before turning it off so that the fuel pump has a second or two to refill the carbs completely and see if your starting problems get better.

A bleeding down trim cyl may be a leaking check valve OR a cyl piston seal.

If it holds while underway then most probably it is the check valve, seals tend to bleed down quickly and fail to hold under WOT power.

 

[tattoo]

Re: 89 40hp 4 cylinder problems...

Thxs for the reply,the trim goes down pretty quick and when im in the water i have to keep trimin up,so i guess i got leaky seals.I will have to make sure not to trim the motor up very much and see how it helps....thxs

 

[Barnacle_Bill]

Re: 89 40hp 4 cylinder problems...

Also check your manual release valve on the T&T pump. It may have worked loose.