Logo

Johnson 1992 9.9 hpdoesnbt have power

ba_50

Regular Contributor
"This '92 J10RENA won't get a 14' aluminum boat up on plane.

It has a new fuel pump, fuel lines, upgraded carb cover (plastic), carb kit, spark plugs (tried 4), cleaned the carb about 15x.

The motor won't start without pre-mix. The choke plate opens and closes ok. There are 3 holes in the front venturi chamber that I know of. Is there a hole in the bottom front or do I have a rough spot?

After putting the new fuel pump on it got full power. After cleaning it again it would't power up.

The fuel tank line works with the other motor. Tank vent open.

Compression is 100 & 102#. Motor shouldn't have only 25 hours on it.

7/16" spark jump on each plug.

Can't think of anything else. Any suggestions? Thanks."
 
"the first thing that comes to

"the first thing that comes to mind,is the gasket that goes on top,there r three,and if u put the wrong one on,u can pull till he$$ freezes over...dont ask how i know this,..
ck for water in fuel..make sure each and every tiny hole,and orifice is CLEAN and clear,so u can,eliminate the carb..."
 
Back
Top