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2 stroke fricking yamaha issues
Posted on 11/25/22 at 9:42 pm
Posted on 11/25/22 at 9:42 pm
Dropped the boat in the water about a month ago. Wouldn't get on step, idled fine. Turns up RPMs on the driveway. Sent it in to clean the carbs. Let her sit since then
Fast forward to yesterday, primer ball wouldn't get hard but cranked easy in the driveway and would idle up to around 5,000 RPMs.
Drop in the water and bogged down before getting on step.
The frick.
Changed the fuel line and primer ball
Still wouldn't get hard
Cranked and would run 10 seconds then die
Drink another beer
frick it let's bypass the fuel filter and go to the tank
Another beer time
Bam. Ball got hard and cranked up.
Great
Idled up the RPMs and now she's making a sucking/blowing (partially drunk so idk) noise around either the fitting that ties into the cowling or somewhere else that I can't see because too many white cans and it's pitch black outside
But, it cranks and idles fine, just makes that noise every 30 seconds or so between 3,000 and 5,000 RPMs then runs fine then makes that bloeing/sucking noise again
Any ideas here? Fwiw it's on my 2 stroke 50 yammy
Fast forward to yesterday, primer ball wouldn't get hard but cranked easy in the driveway and would idle up to around 5,000 RPMs.
Drop in the water and bogged down before getting on step.
The frick.
Changed the fuel line and primer ball
Still wouldn't get hard
Cranked and would run 10 seconds then die
Drink another beer
frick it let's bypass the fuel filter and go to the tank
Another beer time
Bam. Ball got hard and cranked up.
Great
Idled up the RPMs and now she's making a sucking/blowing (partially drunk so idk) noise around either the fitting that ties into the cowling or somewhere else that I can't see because too many white cans and it's pitch black outside
But, it cranks and idles fine, just makes that noise every 30 seconds or so between 3,000 and 5,000 RPMs then runs fine then makes that bloeing/sucking noise again
Any ideas here? Fwiw it's on my 2 stroke 50 yammy
Posted on 11/25/22 at 10:43 pm to maisweh
Could have a tank full of garbage fuel, could have a VST full of crap or a pump going bad, problem is a lot of guys diagnose the problem as being fuel, clean the carbs that probably needed it but fail to find all the other problems garbage fuel has caused.
Posted on 11/26/22 at 7:40 am to maisweh
How old is the motor? Oil injected? Any alarms?
Posted on 11/26/22 at 7:56 am to maisweh
Check your Reed valve assembly.
Posted on 11/26/22 at 12:04 pm to maisweh
Does fuel tank need to be vented?
Posted on 11/26/22 at 2:00 pm to maisweh
Seems like i may have had a similar issue with a 115 2 stroke. Cranked and idled ok, but kinda stalled out when i punched the throttle to hop up on plane. Only happened to me a few times on one fishing trip. Once i got up on plane, I ran the hell out of it hard and problem solved.
Posted on 11/27/22 at 11:11 pm to maisweh
Yamaha are by far the most overrated thing on the planet, there is a guy in Louisiana who rebuilts hundreds of them a year that told me they lifespan of a typical 4 stoke is 8 years. My old Seahorse did twice that. They have horrible corrosion issues
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