I also just ran it out of the water and it got to full rpms in forward when it wasn't pushing the boat. But as soon as I put it back in the water it didn't want to get to full throttle
I did a compression test not too long ago. I don't remember the results but I know it's good compression. And I don't know about the spark plugs but they are brand new so I'm assuming they're fine. But I'm not positive about the clutch. Is there any test I could do for the clutch?
I have a 1963 Johnson 5.5 that won't rev all the way up in forward but it will in neutral and reverse. I've heard that it's a fuel problem but the carburetor got cleaned and rebuilt and all the fuel lines are new. Any idea what the problem is?