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re: 2 stroke fricking yamaha issues

Posted on 11/28/22 at 8:25 am to
Posted by maisweh
Member since Jan 2014
4063 posts
Posted on 11/28/22 at 8:25 am to
quote:

Clean the VST filter, my ox66's had the same symptom every time the vst was clogged.

I cant find the VSTs on this one
Posted by BrotherEsau
Member since Aug 2011
3503 posts
Posted on 11/28/22 at 8:54 am to
Do you get gas smell when running it?

I had an OX66 - had a similar issue with bogging, idling fine etc.
There were two fuel diagphrams at each of the fuel pumps. Very thin like a cigarette cellophane. One was torn so it would occasionally flood a cylinder w gas which would bog it down, make it hard to start etc.

I too only mechanic when drinking

Posted by maisweh
Member since Jan 2014
4063 posts
Posted on 11/28/22 at 9:24 am to
No gas smell.
It's odd that it won't turn up more than 2,200 rpms in the water.
Posted by BrotherEsau
Member since Aug 2011
3503 posts
Posted on 11/28/22 at 9:55 am to
It’s gotta be a fuel pressure/delivery issue if it only bogs under lof I would think.

Have you hit up the hull truth?
Posted by Motorboat
At the camp
Member since Oct 2007
22681 posts
Posted on 11/28/22 at 10:14 am to
Pull your fuel pump. I bet it’s disintegrating.

Btw, I’m not a mechanic. Just been through same symptoms and troubleshooting recently on my 150 yammy.
Posted by CootKilla
In a beer can/All dog's nightmares
Member since Jul 2007
5906 posts
Posted on 11/28/22 at 11:09 am to
I had same issue on a 25hp mercury. It was a $800 fuel pump.
Posted by TwoFace
Member since Mar 2018
1114 posts
Posted on 11/28/22 at 12:07 pm to
$800 ?!?!?
Posted by maisweh
Member since Jan 2014
4063 posts
Posted on 11/28/22 at 1:06 pm to
800 bucks?
Jesus.
That's a whole parts motor
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