1976 Evinrude 70 HP Rev Problem

[Billyjack]

The motor runs great in nuetral. The motor runs great up to 1/4 throttle in gear but then the motor dies.Sometimes it acts like is flooding out or missing. Can anyone help?

 

[orca]

Re: 1976 Evinrude 70 HP Rev Problem

G'Day. First rule of thum. Remove the spark plugs and check the colour. If they are all the same colour then move on. Do a compression check. all cyls should be equal. check the spark. Put the plugs back on the plug leads and hold the plugs to earth. then get someone crank the motor. If no luck then holler for help again.

 

[Deuce22]

Re: 1976 Evinrude 70 HP Rev Problem

Billyjack<br /><br />I just experenced the same problem with my 70hp (83')evinrude. I did a decarb, and then replaced the plugs. I also replaced the fuel pump and the engine is running great. Try decarb first it's cheaper. If that doesn't seem to work, before you change the fuel pump, start the engine put a load on it and if it starts to stall idle it high and hit the choke it will try to stall and hopefully loosen the junk it the carbs. Good luck<br /><br />Deuce

 

[Bear]

Re: 1976 Evinrude 70 HP Rev Problem

Pump the primer bulb and see if it picks up. If it does get a new fuel pum kit. Check for air leaks too.

 

[Billyjack]

Re: 1976 Evinrude 70 HP Rev Problem

I have now replaced the plugs, fuel filter . checkedthe plugs for spark, cleaned the carbs, and replaced the fuel line and bulb!! I still have had no luck! Can some one tell me how to check and adjust the timing? THANKS!!!