Re: 92 johnson VRO fuel/oil injection problem
Check pump output by removing the fuel line from the carb feed and cranking into a container. Muffs on for this and remove plug wires or pull the lanyard.
Strong continuous spurts = pump functioning O.K.
Strong spurts to begin with and tapering off = air leak or malfunctioning pump.
Dribbles to nothing = massive air leak or pump is no good.
Your first post says spark and compression are good and your last one mentions your thumb over the spark plug hole as a compression test.
How was the original spark and compression test performed ???
I have not perfomed a compression test with a gauge, but the motor was running fine when parked and I can feel that the motor has good compression by turning the motor by hand, the air force pushed out by the spark plug hole, and how strong it sounds when it is revving up and running at high RPM. I know that is some Red Neck testing but I have been doing this for years. I do have a gauge I will hook up though. I have put the plugs against the block and watched them spark. That is the only way I have ever checked spark.
I am fixing to remove the fuel line and let it pump into a container to see how the stream looks.
Put new plugs in it.
I am also ordering a carb rebuild kit, I just cleaned and put back together the carbs last month, but did not place anything.
This boat was free and I wanted to make sure it was worth putting money into before I started ordering to many parts. I am at $50 so far with the pump.
