1993 Johnson 120HP

[Brayan]

Hello I’ve got a 1993 Johnson 120 hp engine # VJ120TXEND.
It starts and it runs but after cruising for about 2-3 miles it dies and it does not want to power back on.
Does anyone have any suggestions on why it does that?

 

[fireman57]

Is your tank vent open? Does the primer bulb go flat? Loosen your gas cap and see what happens.

 

[Brayan]

Flue cap is fine and also primer bulb stays pumped up. I do have lower pressure reading in one of the cylinders. Any ideas?

 

[racerone]

Post some compression numbers !-----A " lower pressure reading " means nothing to me.

 

[Brayan]

1,2, and 3 have 115psi and 4 has 60psi

 

[flyingscott]

Time to pull the head you have a serious issue there.

 

[racerone]

Either a blown head gasket or very expensive to fix / replace a bad piston.

 

[Brayan]

Thanks guys, I guess it’s just time to look for a new one. I appreciate your help.