Logo

140 Mrainer issues

B

BBass

Guest
I have a 1979 Mariner 140 inli

I have a 1979 Mariner 140 inline 6 on a 16 ft aluminium bass boat when the motor runs good it runs good but it has days where it just dosent hardly want to run at all I have had the carbs off three times now and rebuilt the fuel pump once just when I thought it was fixed I let it sit for a week and once again its not runing very well you can tell its trying to load up at an idle and you cant hardly get it to plain it just spits an sputters the more throttle you give it but in neutral you can rev it fine when I finnaly got it to plain out it ran great top end but when I brought it back to an idle I had the same problem.
 
Ive been running the fuel thro

Ive been running the fuel through a strainer and havnt seen any water its just strange when I first got this motor running it wouldnt run good top end then it wouldnt idle now it wont run right mid range rpms its running out of places to run bad.
 
"Bbass, Check the bottom cylin

"Bbass, Check the bottom cylinder(s) for water. If the spark plug is extremely clean, that is a sign that the crank seals are bad or the exhaust baffle or inner cover is leaking."
 
Back
Top