Mercury 115 Pro XS Failure
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- Опубликовано: 23 май 2021
- Mercury 115 Pro XS with 36 hours fails after Mercury serviced and "fixed" it for the exact same problem. The engine will stumble out and quit after the boat gets on plane. It will restart and runs just above idle and can push the boat at 6mph max.
24 June - My buddy who owns the boats says that Mercury replaced the fuel sending unit under warranty and it's working fine now. About $1100 in parts and labor if not covered by warranty.
Check the float inside the VST. It may be too shallow. And also the vent hose, inside; Check and clean carefully. Also take a peek inside the low pressure fuel pump. If there is a diaphram, make sure it doesn't creak/crinkle when flexed; Needs to be rubbery. If not, replace it. There are many variations in fuel systems, over the last 20 years. I'm trying to be as general as possible here. Good luck. 👍
What was the issue on Lake Huron today and this is happened on are 2020 pro xs 250 lucky we were only out 8 miles.
Hello I have a problem with my Mercury 115 ct. Up to 3500 rpm it works normally, then the boat doesn't accelerate until I reach 5000 rpm. The turns increase as a result of the rumble, but the boat does not move. From 5000 onwards it accelerates and glides, but the consumption is at each speed, about 600 rpm less. The engine roar and the revolutions indicated by the instrument coincide. The speed and consumption coincide (almost) with what I did before. However, between these two data there is a difference of over 600 rpm. It is as if the engine does not deliver the power of 600/1000 rpm. These revs then appear at maximum revs, where I reach 6100 instead of 5400 as before. I checked the flexible coupling and replaced all the fuel filters, I used additives and updated the ECU. There are no errors or alarms. Can anyone help me please? Thanks in advance
Check to make sure your fuel tank is venting properly. I’ve seen in the past where the vent will get stuck closed and cause the same issue.
Thanks for sharing your problem. I have the same engine and love it. Much quieter and faster than a Yamaha 115. I hope you have no more issues!
The 115 VMAX sho dusts the 115 pro xs from what I have seen
Nope
@@benblazek3305 how can you dust an outboard motor that runs in the water? It can smoke it/smell 1s exhaust
@@edwardabrahamiii3742 that's what we call being left in the dust in the region I live in. Can't get smoked by a Yamaha after 2007, they were all 4 strokes and the only 4 strokes I have seen smoke are all mercs
@@benblazek3305 So full of shit, the 2.1L mercury shits all over a yamaha.
Oh my gosh, same problem
Check you fuel filter of you use gas with ethanol in it it can clog your filter fast i only use boat gas ethanol free in all my stuff i had similar issues with mine switched to good gas and no issues
Usually it’s something simple. Don’t use cheap oil, gas, and don’t leave old gas in it. Make sure it’s pissing water. Pay attention to the spark plugs
Had this same problem, fuel lines where old and sucking air. Replaced them and problem gone
I'm guessing fuel pressure regulator off the VST .
Also you bulb may have felt a little soft. When you squeeze it the sound would go away. I switch out the throttle position sensor and and the shift position sensor as well only because smart craft was throwing that code. I do feel like it I would of extracted all of my fuel out from my tank I would have solved my issue.
Check the fuel! You may have water in your fuel system. Same thing happened to me. Exact noise would occur.
Read your manual. Those alarms are there for a reason. Usually to save you from burning up your pistons.
There is something in your fuel system that blocks it from getting fuel, i recommend checking your fuel pump
What resolved the issue? We are having a similar problem - thx
My buddy said the fuel sending unit was replaced.
It’s starving for fuel. Check the boat line from the tank back.
The boat side looks good. The high pressure fuel pump was previously replaced under warranty and the motor ran fine for about 10-15 hours before the same problem pooped back up. Boat is back at the dealer for more warranty repair now that hopefully will solve the problem.
Check the air vent on the the tank, seems to run good just long enough to pull a vacuum on the system. This can cause premature failure of the fuel pump as well...
Should have bought a e-tec best built outboards ever made
As folks on here have said, it's a fuel issue. Your boat has a tank vent plugged. Check the fuel bulb when it quits running to see if it's collapsed. Once you get it figured out, take a class on how to trim your outboard.
It ended up getting a fuel pump replaced under warranty and some of the lines redone. Main issue was not a plugged vent but a fuel line that allowed air to be pulled in under load. Outboard trim was not the priority when we were messing with the motor.
fuel injector. had one doing same thing
mechanical things do fail. glad its fixed. i have the same motor, so far so good. got 5 years warranty, i can still upgrade for another 3 and probably will :). Safe and happy boating everybody.
Hey I just got a 115 wishing I got the 150, what are you talking about upgrading is there some kinda program to do that
@@burackus4829 mercury has extended warrantiesup to 8 years . During promotions those are great deal. Mine came to180 cad for 5 years all components so platinum level
Wind noise is so loud we can’t hear anything else
Open the vent on your fuel tank....
Would have definitely been nice if the problem was that simple.
@@brian8793 What was the issue? Did you ever find out?
Mercury ended up replacing the engine fuel pump and a couple other things. It's my buddy's boat but last time we talked the he said the issues were mostly gone.
@@brian8793 Good to hear. I'm looking at vids of people whose engines fell off - cos today my engine fell off the boat :') So it could be worse :D
It’s overheating! You probably flushed the motor when it was running using the flush port!! NEVER RUN THE MOTOR USING THE HOSE FLUSH!! A ditz parts girl said to run it when I flushed! It blew a seal out and it overheated! Same thing
It wasn’t overheating. Anytime it was ran out of the water was with muffs not the flush port.
Yamaha fixes this. Mercs are not built by Japanese.
They are overengineered then underproduced with cheap parts in too many places. I am too young to say "they don't make em like they used to" but they really don't. I just stick to old 2 strokes. They can be had for dirt cheap, are easy to work on and tons of replacement parts and besides fuel economy are superior in every way to new 4 strokes. Blame the EPA, blame mercury whatever. I think this era will be known as the "plastic age" in 50 years and people will laugh.
100%
It's starving for fuel. That's it. Has nothing to do with being overly complicated. Old school carbureted two stroke outboards can starve for fuel just like any other outboard.
By the way, overly complicated is what you should have typed. Over engineered implies that a product is built to exceed bare minimum quality.
And don’t use ethanol fuel at all for that reason!!!
I have never ethanol myself, just encountered bad fuel.
Buy a Yamaha. That's what I've always used
My opinion buy Volkswagen 1.9 tdi and boost it to 300 horsepower
Easy fix buy a Yamaha