Evinrude 95 15hp wont start

[esteym]

Hi, went to lake george with the family and my brother-in-laws engine would not start.

He just got the boat and engine and had it running. But apparently a mouse got into the engine cowling and made a home in the air intake ripping the insulation out of one side of the cowling. They pulled the plugs and they were full of gook. Then cleaned them and still no start. We have spark and we can smell fuel.

I told him we would have to rebuild the carbs and pull the head to clean out the cylinders because it is obvious that insulation made it in there. What else should I think of doing? Do we have to tear it down to the block to get everything out? I'm not afraid of doing this since I have successfully rebuilt a Rude 150 before, but I'd rather not.

who knows maybe the mouse is stuck in the air intake of the carb or something d

Mike

 

[Xcusme]

Re: Evinrude 95 15hp wont start

Mike, Don't get nuts pulling the head until you have a good reason. Did you see pieces of insulation in the cylinders? I highly doubt if you have mice in your cylinders. You say the plugs were full of gook. Describe gook.....was it gas fouled? Black deposits, etc?? Perhaps the motor is (was) running overly rich.
Clean out the area under the cowling. Look for any wire insulation breaks etc. from your mouse friends. If you suspect the carb, rebuild it.
You can look thru the intake to the reeds for insulation pieces (and mice parts) when you have the carb off.

 

[Andre]

Re: Evinrude 95 15hp wont start

My guess your problem is with the carb as the plugs seem to be sparking fine. It doesn't appear to be releated to an ignition problem at this time and the power head is the last area you want to tier into if you don't need to.

Andre

 

[guywithboat]

Re: Evinrude 95 15hp wont start

If infact you do have a bunch of goop in the motor, use seafoam. It worked great in my 67'. Another small area to look at are the fuel couplings. If there is a bad seal, then it will suck air.

 

[esteym]

Re: Evinrude 95 15hp wont start

The gunk I spoke of was crusty foam insulation. Sorry about being unclear about that. I found that gunk inside the air intake and inside the carb. We also found it on the spark plugs. That is what was clogging them at first. I'd imagine there would be more in the cylinders.

Would that just blow out when we get it started?

I was kidding about the mouse by the way.

I'll tell my bro-in-law to check for freyed or chewed wires. If the gunk got into the cylinders should I pull the head?

Thanks for all the help
Mike

 

[OBJ]

Re: Evinrude 95 15hp wont start

If the BIL just got the boat, probably the first thing to do is pull the carb and give it a good soak and cleaning. Also check in the hole going into the reed cages for any insulation that may have got sucked in there.

As the other guys posted, don't be anxious to pull the head. Once the carb is cleaned and any junk cleaned out of the reed area, try and start it. The foam won't hurt the cylinders....it'll just burn away if there is any. Once the engine is running, give it a decarb.

While in the maint phase....take a set of compression readings for future reference.

 

[esteym]

Re: Evinrude 95 15hp wont start

Thanks guys. I'm glad that I dont have to pull the head. I'll let you know how it goes, but it might be a while before I get up to BIL to help fix it.

Mike