Hard starting Evinrude 150

[Dave_Noffsinger]

Hey guys, I'm trying help my buddy out with is mid 80's Evinrude 150. The motor runs great, the fuel lines are in good shape, it has a new battery, plugs are new, and overall it's in good running order. The problem is once the boat has sat for a couple days or longer it becomes very hard to cold start. Once it has been started for the day it fires up on the first hit of the key but getting it going after it has been sitting for a few days is frustrating.

I could be totally wrong but my gut is telling me there is something up with the primer solenoid or something. If you tap the primer a few times it seems to flood the motor out. When we pull the plugs after a few attempts at cold starting they are soaking wet with fuel. If we clean and dry them out, tilt the motor up to allow some of the excess fuel to run out the air intake, then play with the red lever on the solenoid a bit it will eventually fire up. Once it's warmed up a few minutes it's good to go the rest of the day. We tried starting it without touching the primer at all but that doesn't seem to work either. It's as if it needs an initial prime to get some fuel flowing but when you hit the primer it just floods the thing out and soaks the plugs.

Yesterday when we were messing around with it I manually opened up the throttle plates all the way while he was turning it over. Basically like you would do with a small 2 stroke engine that's flooded out. I'm not sure if that also played into us getting it started or not but shortly after was when I was fiddling around with the solenoid and it came to life.

I'm not sure if were looking in the right direction or not so any advice would be appreciated.

Thanks,
Dave

 

[emdsapmgr]

Re: Hard starting Evinrude 150

The normal "run" position of the red lever is parallel to the length of the primer solenoid. When you push in on the key to choke the engine, the primer solenoid injects a small amount of fuel into the hose barb on the top of each carb to aid cold starting. To make sure the system is working, pull the small hose off the top carb. Turn the key to on and push in on the key. If fuel comes out of the hose, everything is ok.

 

[Dave_Noffsinger]

Re: Hard starting Evinrude 150

Thanks for the reply. I'm getting fuel but now for some reason I have no spark. The CDI is fairly new so I was checking to make sure there wasn't a problem with the ground. The ground checked out so now I'm onto the next step of tracking down the spark issue. I may be back on here again if I get stuck.

Thanks again,
Dave

 

[tashasdaddy]

Re: Hard starting Evinrude 150

several pages of test here, find the ones that fit the motor. http://www.boatpartstore.com/page32.asp
also fully charge battery, that motor has to turn+-300 rpms, to start.