BoatBanter.com - View Single Post - Classic '71 40HP Evinrude Troubleshooting Question

Ryan P.

On 8/27/2015 1:58 PM, wrote:
On Thu, 27 Aug 2015 09:20:21 -0500, "Ryan P."
wrote:

On 8/27/2015 7:39 AM, Tim wrote:
Guys, guys. This was a nice congenial boater thread. No need to ruin it. Ryan is asking good questions and should receive good answers.

Now back to Evinrudes. I have heard that the reeds can deteriorate over time. But sometimes they can build up with carbon not allowing them to seal correctly. Regardless, I believe that the reed is on track with the troubleshooting.

I did have my doubts when I saw the majority of the threads in this
group... But so far, the folks actually responding to my questions have
been very helpful.

I'm going to put the old girl in the water and spray some seafoam
directly into the carb while she's running. I know its a 45 year old
motor and the more I research, the more likely it is that the reeds have
deteriorated, but a can of SeaFoam is pretty cheap and easy to try
before I start dismantling the engine.

The rich folk who live on the lake are gonna love my white smoke. lol

Ryan

Some time you can get the reeds working better just by running it hard
for a few trips out but you still should plan on doing it. It might be
a good winter project if you are in a winter place. I nursed my old 2
stroke 75 along for quite a while before I finally bit the bullet. I
still ended up selling it and buying a 4 stroke but it was running
well enough to get a grand for it.

Yep, in Wisconsin.

I saw on a thread somewhere else that the best way to attempt
"cleaning" the reeds is to get the motor up to operating temp, spray a
bunch of SeaFoam in the carb while running at 2 or 3k RPMs, then stop
the engine and let it sit for 15-20 minutes, then start her up and run
her hard until the white smoke clears out.

Honestly, I don't want to stick too much money into it since I have
the newer boat with the Merc, but I'm willing to do some basic stuff to
it as a learning exercise and as a way to bump up the sale price.

Not to mention the stubborn in me that hates not knowing how to fix
something.

Ryan