1969 Johnson, engine reving in bucket

[The Starcraft Enterprise]

I am new to outboard motors. I noticed that one cylinder was slow to fire as I was reving up the engine in the bucket. Do these engines perform differently in a bucket of water? Could the turbulance in a confined space reduce the amount of water available to the water pump? It seems to idle fine, its only when I try to rev the engine up.

 

[Beek14]

Re: 1969 Johnson, engine reving in bucket

What is the hp of your 1969 Johnson outboard? Do you know the compression? Have you tested the spark? Running an outboard in a barrel can be a pretty common practice. The water needs to be past the lower unit about 1/3 of the way up the exhaust housing. As long as it is submerged well enough, it should run just fine. Could be many things, need more info!

 

[lindy46]

Re: 1969 Johnson, engine reving in bucket

You can only do so much by barrel-testing it. Confirm that it runs and rough-set the idle circuit. You shouldn't be revving it up in a barrel. The real test is to put it in the the water and lake test it.