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

Mr. Luddite

On 8/27/2015 7:49 PM, wrote:
On Thu, 27 Aug 2015 19:18:36 -0400, "Mr. Luddite"
wrote:

On 8/27/2015 2:58 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.

PS
I apologize for the people who garbaged up your thread. Usually they
can be a little more polite when there is a serious boat conversation
going on.

Guys cut it out. We have plenty of flame threads you can use.

The other thing to consider (and I am sure you've read about it) is
that the original reeds are likely to be stainless steel. They fatigue
over time and eventually some pieces can break off and enter a cylinder,
causing a lot of damage. The replacement reeds will likely be carbon
fiber.

Many years ago I accidentally dropped a small lock washer into the
carburetor of a Fiat 850 I had. It was dark and I had removed the air
filter housing for some reason. When I went to put it back on I heard a
"tink ... tink", not realizing that there was a small lock washer under
the wing nut. Destroyed the aluminum head in the engine.

Two strokes are a little more tolerant of trash than a 4 stroke but it
is still a concern.

BTW 54 Mercury for me. Lock nut from a carburetor bolt. The machine
shop could fix the head but it was never really right after that.

Same here. Needed a valve job afterwards and had to have the head
planned. I was hoping that would produce a little more compression and
maybe result in a bit more horsepower but it really didn't make any
difference. Just an expensive fix at a time when I could least afford it.