Tell-take won’t start pushing water until warms up.

[Caden Schaack]

My 1995 Johnson 120 won’t push a strong stream of water until it has warmed up and once it warms up it sounds like it either misses or is getting too much air in the cylinder because it makes larger “puffs” of air out the exhaust inconsistently. I just replaced the impeller. I trying running without the thermostats but it didn’t change anything. I think it overheats but I just can’t figure out why, because after it does start spitting water it becomes a strong stream. While it does it’s puff that I mentioned it almost dies but doesn’t. How could I fix all of this?

 

[jakedaawg]

Sounds like a lean pop. Check compression 1st.

 

[Caden Schaack]

Sounds like a lean pop. Check compression 1st.

I checked it and all cylinders are between 130 and 120. After I ran some seafoam through it, it stop poping as bad as it was. It just takes like a minute for it to start squirting and it gets too hot, I wouldn’t lay a finger on it longer than a 2 seconds because it gets too hot but the water that starts spitting out also gets very hot I’m not sure why it’s getting so hot but is still spitting water?

 

[Caden Schaack]

I checked it and all cylinders are between 130 and 120. After I ran some seafoam through it, it stop poping as bad as it was. It just takes like a minute for it to start squirting and it gets too hot, I wouldn’t lay a finger on it longer than a 2 seconds because it gets too hot but the water that starts spitting out also gets very hot I’m not sure why it’s getting so hot but is still spitting water?

New discovery, one of the cylinders aren’t firing and I put a different plug in and nothing changed, would that be a bad coil pack

 

[MidwestFishingChannel]

You could test your "bad" coil pack by switching it to a different cyl.

 

[Caden Schaack]

You could test your "bad" coil pack by switching it to a different cyl.

I did that now they are all working so might have been a grounding issue. I think the problem now is that it is running too lean and I’m not sure how to adjust these carbs

 

[matt167]

well if you do have a cooling problem, change thermostat and impeller before you fry your motor and create more problems..

 

[MidwestFishingChannel]

there is a write up for adjusting the carbs on those, i believe they are set to either 1 or 2/12 turns you will need a manual to know that for sure.

 

[Caden Schaack]

well if you do have a cooling problem, change thermostat and impeller before you fry your motor and create more problems..

I just put a new impeller in, I talked to someone and I’m no long thinking it’s overheating, just though 160 degrees is cooler than it is.

 

[MidwestFishingChannel]

I did that now they are all working so might have been a grounding issue. I think the problem now is that it is running too lean and I’m not sure how to adjust these carbs

He ran without thermostat and replaced the impeller as well RE:earlier replies.

 

[Caden Schaack]

The thing is the popping came back, when it pops it slows and almost dies and I’m thinking when I put it in the water it will die. I ran some seafoam in it. I’ll just have to mix up some fuel with some carb cleaner and run that for a little bit to see if it clears up.

 

[Faztbullet]

You cannot run that motor without t-stats!!! It also does not have a restrictor on water indicator so all you will get is free running water with lil pressure and the t-stats have nothing to do with indicator flow. Some will lean spit on the hose due to lack of back pressure but need to check carb side covers an sync and link also. Put the t-stats back in before you cold seize motor...

 

[Caden Schaack]

I put the thermostats back in right away.