Are vacuum hose diagrams available?

twoelvis

Cadet
Joined
Apr 7, 2013
Messages
29
I have the 90hp J90PLSOA engine. I am convinced that the last person who worked on it did not connect the vacuum hoses back correctly. Are their vacuum hose diagrams available?
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
37,819
The factory manual has diagrams for the oil recirculation system hoses.----And for the electric fuel primer valve hoses.----I do not believe there are " vacuum " hoses.-----What is your motor doing / not doing??----What trouble shooting has been done if any ?
 

twoelvis

Cadet
Joined
Apr 7, 2013
Messages
29
The factory manual has diagrams for the oil recirculation system hoses.----And for the electric fuel primer valve hoses.----I do not believe there are " vacuum " hoses.-----What is your motor doing / not doing??----What trouble shooting has been done if any ?
I made a separate post about how the engine is running. New spark plugs may have cured that problem. I will know for sure when I can run it under load. But, I disconnected some hoses, while troubleshooting. I took photos of the hose connections before disconnecting the hoses. But, the photos didn't capture everything. I am confused about the balance tube manifold hoses. The starboard side hose goes in to a hose nipple that is in the crankcase. But, I am not sure where the port side balancer tube is connected to. It looks like it was routed either to a "T", or to the air silencer. I do not understand why the port side balancer tube would go to a different place than the starboard side balancer tube.
 

saltchuckmatt

Commander
Joined
Jul 19, 2019
Messages
2,642
I'm going to say it goes to both but it's an educated guess.
 

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