95 150 johnson oceanrunner no wide open throttle

[biggherb]

i have a 95 150 oceanrunner that just started having problems first it wouldn't get wot and had a gas smell from the engine found out 1 carb was leaking.had it rebuilt no more leak but now the engine runs worse than before spitting and cutting off at idle wont even go to half throttle replaced the plugs the fuel filter hoses and put on new clamps what else could be the problem it used to pick up speed if you pushed the choke in now it dies out i just got the manuel to help me trobleshoot the problem any ideas on where to start

 

[dazk14]

Re: 95 150 johnson oceanrunner no wide open throttle

You need to start with a compression test.

Running the motor lean can put holes in pistons, such as needing choke when running a fast speeds.

certainly sound like, a minimum carb cleaning, but lets 1st get those compression numbers.

 

[biggherb]

Re: 95 150 johnson oceanrunner no wide open throttle

thanks i just got the maual i will be doing the compression check today im assuming that i pull all the plug wires off and do 1 plug at a time do i have to have the motor in the water or will ears work since i wont be starting the motor

 

[dazk14]

Re: 95 150 johnson oceanrunner no wide open throttle

No water needed. Pull out all the plugs. Remove lanyard so plug wires don't receive spark. Crank at least 5 times ea cylinder.

 

[biggherb]

Re: 95 150 johnson oceanrunner no wide open throttle

I did the compression check the right side si 95 top 95 middle 95 bottom.the left is 90 top 85middle 80 bottom i put in 1 teaspoon of 2cycle oil rechecked and all cylinders are 95 to 100.put the plugs back in turned on the water motor started on the 1st try no sputtering or popping.idles great but dont see the tach moving the sealoc manual says i need a special meter to check the tach all i have is a fluke 77can i check it with that meteri dont want to rev it up when its not in the water.I forgot to say that I replaced the primer bulb and gas hoses and used new screw down clamps.the old ones were plastic with teeth.put in a new fuel filter.checked all the connections at the motor before it got dark.thanks for your help it sure is better than just a book