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Post by Crkr 23 on Jul 29, 2024 12:24:18 GMT -5
You are right about the 225 Yamaha, it was a dog. The mid section was notorious for corrosion. The problem you would have today with the E-rudes would be finding parts and tech support. All companies make good and bad motors, unfortunately we sometimes don't know the difference until we have bought them.
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Post by illinoisfisherman on Jul 29, 2024 18:46:25 GMT -5
See if you can turn it over by hand. Marvel mystery oil is good. 2 stroke or 4 ? It’s a two stroke. 1994 engine.
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Post by ferris1248 on Jul 30, 2024 7:03:00 GMT -5
Another thing that mechanic told me to do was get a can of Seafoam. Stick the foot in a barrel of water, bring the idle up to 1200 rpm or so and spray the Seafoam into each carb. It'll belch, blow all kind of crap out the exhaust, try to stall, etc. But it'll help clean all that built up carbon out. And it did. Ran a can of Seafoam in the first couple of tanks also.
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Post by Crkr 23 on Jul 30, 2024 7:56:39 GMT -5
There used to be a poster on THT and the old forum that went by "Dink". He was an OB mech and he really pushed using Seafoam for cleaning out engines. I believe one of his methods was a quart of Seafoam to a gallon of gas. Crank it on this and let it stall the motor. Let it sit for 30 minutes and crank it on normal fuel (with ob oil). It will blow all kind carbon out the exhaust. Keep repeating until you get a normal looking exhaust. Before I tried to start the motor, I would do as previously recommended, use the Marvel Mystery oil liberally in the cylinders, leave the plugs out and rotate several times by hand and let sit. Good luck.
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Post by Captj on Jul 30, 2024 16:22:56 GMT -5
Letting them sit is not a good idea.
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Post by ferris1248 on Jul 30, 2024 16:37:00 GMT -5
There used to be a poster on THT and the old forum that went by "Dink". He was an OB mech and he really pushed using Seafoam for cleaning out engines. I believe one of his methods was a quart of Seafoam to a gallon of gas. Crank it on this and let it stall the motor. Let it sit for 30 minutes and crank it on normal fuel (with ob oil). It will blow all kind carbon out the exhaust. Keep repeating until you get a normal looking exhaust. Before I tried to start the motor, I would do as previously recommended, use the Marvel Mystery oil liberally in the cylinders, leave the plugs out and rotate several times by hand and let sit. Good luck. The old 2 strokes were nasty engines. 15 or 20 % of the fuel went out the exhaust and carbon buildup on pistons was normal. You had to decarbonize or run something like Seafoam to keep the performance up.
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Post by illinoisfisherman on Jul 30, 2024 17:28:34 GMT -5
On the flip side, I went through 3 V4 OMC motors and they were bullet proof. I ran them in horrible conditions, mud,grass,logs, and blew one head gasket, one stator, and a fuel pump in about 10 yrs of work. Great motors. I have an old V-4 Johnson 150HP A Johnson mechanic told me it was the best motor that they ever built. He told me never get rid of it
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Post by Mango Man on Jul 30, 2024 17:28:54 GMT -5
There used to be a poster on THT and the old forum that went by "Dink". He was an OB mech and he really pushed using Seafoam for cleaning out engines. I believe one of his methods was a quart of Seafoam to a gallon of gas. Crank it on this and let it stall the motor. Let it sit for 30 minutes and crank it on normal fuel (with ob oil). It will blow all kind carbon out the exhaust. Keep repeating until you get a normal looking exhaust. Before I tried to start the motor, I would do as previously recommended, use the Marvel Mystery oil liberally in the cylinders, leave the plugs out and rotate several times by hand and let sit. Good luck. I think he passed unfortunately. But he knew his shit.
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Post by Crkr 23 on Jul 30, 2024 17:40:01 GMT -5
Dink helped a lot of people.
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Post by billybob on Jul 30, 2024 19:05:23 GMT -5
I remember a Dunk on THT. Was a marine surveyor
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Post by Crkr 23 on Jul 30, 2024 19:30:50 GMT -5
I may have it wrong, Dunk sounds more familiar.
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Post by cracker4112 on Jul 30, 2024 19:46:47 GMT -5
It was Dunk. He was on the FS forum for a while.
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Post by Captj on Aug 1, 2024 13:50:53 GMT -5
Pri-G additive kept my Yamaha C150's running clean for over 20 years of hard use. Before using it the plugs would foul in about 20 hrs. When using it my plugs lasted over 100 hrs, and carbon buildup was very minimal. When I sold the engines in 2018 they had 128# of compression all around.
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Post by Crkr 23 on Aug 1, 2024 15:10:40 GMT -5
It used to be recommended to run Ring Free on Yamahas. A Yamaha tech told me to save my money and just use gas with techron in it, that was all that Ring Free was. At that time Chevron and Texaco gas was the only 2 companies that advertised Techron in their gas.
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Post by cadman on Aug 1, 2024 15:49:47 GMT -5
It used to be recommended to run Ring Free on Yamahas. A Yamaha tech told me to save my money and just use gas with techron in it, that was all that Ring Free was. At that time Chevron and Texaco gas was the only 2 companies that advertised Techron in their gas. They still are. Techron is a trademark of Chevron. Shell has their own version called V-Power. Exxon/Mobil has their own as well.
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