Hi everyone my name is Craig and I am in real need of some expert help.
My cousin and I bought a Nova Craft Half Cab with a Johnson 110hp outboard on it about 3mths ago for $5,000 it?s our first boat. It?s really turning into a dog of a motor, at full throttle in the water will not rev over 2500rpm... (first time we took it out we were at 2000 then 1500 now stuck on 2500)
We have taken it to two marine mechanics several times and have already spent way too much on the motor we are at the point now where we are thinking of selling it for whatever we can get for it and count our loses. I thought might just try one more time to work on it ourselves with help from you guys if possible....
What I can tell you about it is as follows:
Motor ? 1989 (I think) 110hp Johnson v4, vro - (been taken out running oil in fuel) , serial number AJ110TXC,
Compression 100 110 110 120 ( I?m not sure but have been told its bad )
Rectify regulator replaced (when we went to buy the boat, the owner had connected the battery on the wrong way we think and stuffed the r/r, was smoking as soon as it had power going to it. So replaced and seems to be fine)
Brand new battery
When the motor is running the battery is charging at 13.4v
New blub and fuel lines (fuel tank works fine)
Sink and link has been done timing is good
New spark plugs (was running on only 2 piston but worked out that was because someone had hooked up the coils wrong and the timing was jumping all over the place)
New leads
Have done piston drop test and they all are running right, all pistons have good spark
Temp sensors - the wire of the port side has been rip out the other one is fine, when grounded they both will set off alarm
Have been told by mechanic that S.L.O.W is not fitted on motor??
Our next step we were thinking of getting the carby rebuilt and jets cleaned out, just not sure if we should spend any more money on it......... or just get a can of petrol and watch it burn!!!!
I don?t understand that when in natural I can rev the motor up past 2500 but when in the water it won?t........ Any help or advice would really be appreciated. Thanks!!!
My cousin and I bought a Nova Craft Half Cab with a Johnson 110hp outboard on it about 3mths ago for $5,000 it?s our first boat. It?s really turning into a dog of a motor, at full throttle in the water will not rev over 2500rpm... (first time we took it out we were at 2000 then 1500 now stuck on 2500)
We have taken it to two marine mechanics several times and have already spent way too much on the motor we are at the point now where we are thinking of selling it for whatever we can get for it and count our loses. I thought might just try one more time to work on it ourselves with help from you guys if possible....
What I can tell you about it is as follows:
Motor ? 1989 (I think) 110hp Johnson v4, vro - (been taken out running oil in fuel) , serial number AJ110TXC,
Compression 100 110 110 120 ( I?m not sure but have been told its bad )
Rectify regulator replaced (when we went to buy the boat, the owner had connected the battery on the wrong way we think and stuffed the r/r, was smoking as soon as it had power going to it. So replaced and seems to be fine)
Brand new battery
When the motor is running the battery is charging at 13.4v
New blub and fuel lines (fuel tank works fine)
Sink and link has been done timing is good
New spark plugs (was running on only 2 piston but worked out that was because someone had hooked up the coils wrong and the timing was jumping all over the place)
New leads
Have done piston drop test and they all are running right, all pistons have good spark
Temp sensors - the wire of the port side has been rip out the other one is fine, when grounded they both will set off alarm
Have been told by mechanic that S.L.O.W is not fitted on motor??
Our next step we were thinking of getting the carby rebuilt and jets cleaned out, just not sure if we should spend any more money on it......... or just get a can of petrol and watch it burn!!!!
I don?t understand that when in natural I can rev the motor up past 2500 but when in the water it won?t........ Any help or advice would really be appreciated. Thanks!!!