1983 115 h.p. merc need help please!!!!!!!

[bag83097]

I have a 1983 mercury 115 h.p. it will idle great but as sood as you try to take off it starts missing on the bottom to cylinders. It has 125# of compresion on all cyl. it is not the power pack or the coils. when it is idling you can choke the top carb by hand and it will kill the motor real quick, the second carb takes just a little longer, but the bottom carb won't kill it at all. after you choke the bottom one gas will pour out of the carb just like the others. i removed the plugs on the bottom 2 cyl. the #5 was wet but the #6 did not have hardly any at all on it. you can rev it up in neutral and it runs fine. but with a load against it, it just spits and sputters. I really need help. any suggestions. thank you

 

[Laddies]

Re: 1983 115 h.p. merc need help please!!!!!!!

Sounds like a pluged high speed jet in the bottom carb. Have they been cleaned lately---Bob

 

[bag83097]

Re: 1983 115 h.p. merc need help please!!!!!!!

thank you ill try that

 

[Clams Canino]

Re: 1983 115 h.p. merc need help please!!!!!!!

OR.... there is an issue with the lower seals.<br /><br />Also do a compression check... something smells fishy here.... <br /><br />-W (not usually an alarmist)

 

[bag83097]

Re: 1983 115 h.p. merc need help please!!!!!!!

the compression tested 125# on 1-5 but 105# on 6 i am also being told that it could be a stuck ring

 

[bag83097]

Re: 1983 115 h.p. merc need help please!!!!!!!

is there any way to unstick the ring with out have to tear the motor down? I bought the motor from a marina in MN and they don't seem to want to help me out it was supposed to be a great running motor ready to bolt on. boy were they wrong. They will give me my money back but want me to pay all they freight but heck i had to pay the freight to get it here. If any one could help please?

 

[bag83097]

Re: 1983 115 h.p. merc need help please!!!!!!!

anyone?

 

[achris]

Re: 1983 115 h.p. merc need help please!!!!!!!

Bottom crankshaft seals, as per Clams Canino (it was also my first thought as I read the post).<br /><br />The reason the plug is so clean is because the bottom cylinder is sucking water and that's what's keeping the plug clean. <br /><br />Powerhead off, replace seals. While you're at it, change the exhaust cover gaskets too.<br /><br />Chris.......

 

[Clams Canino]

Re: 1983 115 h.p. merc need help please!!!!!!!

Mercury Power Tune used as directed can unstick a ring. But I still think it's bottom seals.<br /><br />You CAN remove that lower endcap without ripping the whole powerhead down. Have the dealer do it with th especial puller. Loosen the two bottom bolts that hold the block together, that helps too.<br /><br />-W

 

[bag83097]

Re: 1983 115 h.p. merc need help please!!!!!!!

its not the bottom seals. i done a check on that thats not what it was. I think it might be something electrical???

 

[Clams Canino]

Re: 1983 115 h.p. merc need help please!!!!!!!

Pray tell HOW did you "check" the bottom seals?<br /><br />-W

 

[achris]

Re: 1983 115 h.p. merc need help please!!!!!!!

Originally posted by cardsfan:<br /> its not the bottom seals. i done a check on that thats not what it was. I think it might be something electrical???

Originally posted by Clams Canino:<br /> Pray tell HOW did you "check" the bottom seals?<br /><br />-W

I'm curious too. Only way I know the check the seals is to go in and look at 'em.<br /><br />Chris..........

 

[bag83097]

Re: 1983 115 h.p. merc need help please!!!!!!!

you said that it would be getting water in the cylinders right. thats why the plug is so clean. If you put a dirty plug in and run it for 5-10 minutes it will be clean and it was not

 

[bag83097]

Re: 1983 115 h.p. merc need help please!!!!!!!

you said that it would be getting water in the cylinders right. thats why the plug is so clean. If you put a dirty plug in and run it for 5-10 minutes it will be clean and it was not

 

[bag83097]

Re: 1983 115 h.p. merc need help please!!!!!!!

you said that it would be getting water in the cylinders right. thats why the plug is so clean. If you put a dirty plug in and run it for 5-10 minutes it will be clean and it was not

 

[Clams Canino]

Re: 1983 115 h.p. merc need help please!!!!!!!

Nope............ run it for a day or so of normal use and it should get cleanER.<br /><br />-W

 

[bag83097]

Re: 1983 115 h.p. merc need help please!!!!!!!

uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

 

[bag83097]

Re: 1983 115 h.p. merc need help please!!!!!!!

it was the stator causing it to miss

 

[bag83097]

Re: 1983 115 h.p. merc need help please!!!!!!!

is the rectifier what the stator hooks into along with the red wire that feeds the powerpacks.

 

[bag83097]

Re: 1983 115 h.p. merc need help please!!!!!!!

is the rectifier what the stator hooks into along with the red wire that feeds the powerpacks.