Mercury 40 HP problem....HELP!!

[Cane Pole]

When you put the starter back on, don't over torque the bolt. Aluminum block threads are easy to strip. Experience here. Replace the jets if you can. One speck of anything, it want run right. Experience here too. I could not see the trash in mine. Soaking in carb cleaner did not fix the problem. New jet did the trick. Be sure to get the right jet. Been here too.

[smackover]

I have a 48 hp evinrude that acts the same way as you describe the 40 hp merc acts.

We found that when I shut down the motor and didn't run out the fuel in the carb... fuel would gunk up in the carb....looks like little balls...these would block fuel flow thru jets... this would occur some times in one or two weeks of sitting up.

If you have left fuel in carb between trips...you might want to open up carb and take a look for residue such as loose gunk in bowl. If its' there clean it out and re-assemble before spending $$$.

Regards

Smackover

[crappie cowboy]

When you put the starter back on, don't over torque the bolt. Aluminum block threads are easy to strip. Experience here. Replace the jets if you can. One speck of anything, it want run right. Experience here too. I could not see the trash in mine. Soaking in carb cleaner did not fix the problem. New jet did the trick. Be sure to get the right jet. Been here too.

Cane Pole, You make me laught, your so funny, I think everything has happened to you. That's not funny I know, but the way you talk about it is what's funny...your a hoot.

crappie cowboy

[Cane Pole]

Cane Pole, You make me laught, your so funny, I think everything has happened to you. That's not funny I know, but the way you talk about it is what's funny...your a hoot.

crappie cowboy

Over a 1/2 century of trial and error and Boy Scout training. Mostly error. Never got a badge in motor fixin'.

[SpeckWick]

I have a 48 hp evinrude that acts the same way as you describe the 40 hp merc acts.

We found that when I shut down the motor and didn't run out the fuel in the carb... fuel would gunk up in the carb....looks like little balls...these would block fuel flow thru jets... this would occur some times in one or two weeks of sitting up.

If you have left fuel in carb between trips...you might want to open up carb and take a look for residue such as loose gunk in bowl. If its' there clean it out and re-assemble before spending $$$.

Regards

Smackover

Thing is, would that cause the fuel to flood? I guess it would since the fuel coming in couldn't get out through the jets. I'll definitely check it out. When I do get the thing apart, I am going to replace as much of the carb components as I can. No sense going through all this then putting it back together only to find that other parts are bad and have to start over. If I'm gonna do it, might as well do it all. Even if it is just gunked up, a rebuild now will head off any carb problems for a while.