1992 Johnson 120

[crestlinermusky]

I have a chance to buy a 1992 Johnson 120hp. Here's the issue, the VRO pump crapped out and the original owner swapped out the original fuel pump that has the VRO integrated in the pump to a normal Diaphram pump for 50 to 1 mix. Now the engine seems to be starving for fuel at WOT. Are the original VRO pumps high flow and the motor requires a original VRO fuel pump even though the VRO has been deleted. Any feedback would be appreciated

 

[ct1762@gmail.com]

Nothing wrong with a single traditional pump on these. puts out roughly 2.5psi at WOT. Your issue, you will probaby find out eventually, has to do with dirty carbs or an air leak somewhere in the manifold. hit the primer when its bogging down. if it hits in again, you know what to do.

 

[crestlinermusky]

Nothing wrong with a single traditional pump on these. puts out roughly 2.5psi at WOT. Your issue, you will probaby find out eventually, has to do with dirty carbs or an air leak somewhere in the manifold. hit the primer when its bogging down. if it hits in again, you know what to do.

Thank you, i figured it was probably an air leak somewhere

 

[ct1762@gmail.com]

Thank you, i figured it was probably an air leak somewhere

air leaks are sort of unusual as it would effect idle quality. I'd go through the carbs and throttle bodies while your at it for the idle circuit. carbs would be my first guess. most ignition components on these either work or they don't but hit the primer first to confirm its fuel related.