115 merc running problem

[kozmo]

i have a 1979 merc 115 that starts hard, stalls after putting in lake after a minite or so.looses high end. i took to dealer, not sure what problem is, thinks its reed valves! compression all around 120lb. rebuilt carbs,fuel pump.still very hard starting, and dies in lake. fuel lines look ok, but i am replacing ball and lines anyway. any way to determin if the reeds ar ok without tearing down? any sugestions on what to check? thanks for any help. koz

 

[dogsdad]

Re: 115 merc running problem

I don't have an answer to the question, but I am wondering why anyone would think the reed valves would cause stalling after a minute in the water.<br /><br />I think I would be investigating the ignition system since your fuel system will be basically overhauled once you're replaced the lines and all.<br /><br /><br />-dd-

 

[Hank 911]

Re: 115 merc running problem

Terry If you haven't already, check for a clogged filter on the fuel pickup, also check for water in the tank. Make sure the tank is properly vented. Good luck.

 

[schaiss]

Re: 115 merc running problem

79'. Did you do the carb work recently? If this work were done last year and the engine not layed up properly for the winter, fuel in the carbs would easily gel inside the jets, causing the problems you mentioned.

 

[Fishin4fun]

Re: 115 merc running problem

are you interrested in a bolt on replacement? Ihave a 79 powerhead complete with wiring, ready to bolt up, runs excellent. I replaced it with a newer motor with self contained trim/tilt. Will make great deal and ship to your address.