1989 Evinrude XP150

[dayvboy]

My motor was running great, then it felt like it went to four cylinders, then back to six. Then it wouldn't go over 10 miles p/h. Am I looking at a power pack?, Ethenol, dirty Carbs, blown cylinder? When it is in idle and I use the warm up level, it sounds normal. I did hear a little rattle. I use 89 octane and I use stabil. I don't think it is a compression issue. Any insight would be helpful. Thanks

somebody recommended i pull the plugs and look for any part of the six pistons, metal on the plugs to see if I blew a cylinder. They were all clear and I could see all the pistons. I'm thinking water in the gas. How do I clear it out. I was told no dry gas in two-strokes.

 

[emdsapmgr]

Re: 1989 Evinrude XP150

A couple of things to check. Your owner's manual or service manual may indicate if your engine has SLOW. That is a system which will limit rpm's to around 2500 under certain conditions, like an overheat. You would probably hear a warning horn if you had that problem. It is possible the power pack could be starting to fail, dropping spark to one or more cylinders. Weak ignition components tend to fail with age and when the engine reaches normal operating temps. You can use an inductive timing light to check spark on each plugwire when the engine starts to act up. It will show misfires or nofires in the light flashes. You can pull the fuel hose off the engine and pump some fuel into a large glass. Let it settle for a few minutes and you can tell if there is water in the fuel-it will settle on the bottom of the glass. Today's ethanol fuels tend to absorb moisture, so I drain my tanks at the end of each fall season.

 

[dayvboy]

Re: 1989 Evinrude XP150

thanks boss! I heard np waring sound, I did pull the gas line and check for water. Nothing I will try the second tank today. Can you recommend anything I can spray into the carbs in case there is water?

Thanks

 

[jonesg]

Re: 1989 Evinrude XP150

If you find water, drain the carb bowls.

Ignition on, disconnect the port temp sensor and touch the wire to the block, the overheat warning horn should sound.

If it doesn't sound you may have had a hot run and it went into SLOW but you got no warning.

Its important these horns function.
Do you get a system check beep when the ignition is turned on?