Looking to advice on solving problem with 2004 EFI 115 4 stroke

[Weshawk5]

Looking for advice on troubleshooting my 2004 efi 115hp 4 stroke.

had it out to the lake last week and at times when I would push the throttle forward to accelerate it was as though the motor had no power and when this happened the motor ran rough as in it vibrated more than normal. This improved throughout the day. At first I thought it could possibly be bad gas so I went out again yesterday with new gas and encountered the problem right away and it never resolved.

my thought at this point would be starting by changing out the fuel filter and fuel pump but past that looking for suggestions on where to look next. Despite being mechanically inclined I have never worked on or troubleshot a 4 stroke outboard engine before.

also I plan on taking the boat to the dealership and having the diagnostics test ran on it to possibly steer me in the right direction.

thanks in advance for any advice you can provide.

 

[Weshawk5]

I should also add that when I push the throttle forward with the motor not in gear the motor runs fine.

Looking for advice on troubleshooting my 2004 efi 115hp 4 stroke.

had it out to the lake last week and at times when I would push the throttle forward to accelerate it was as though the motor had no power and when this happened the motor ran rough as in it vibrated more than normal. This improved throughout the day. At first I thought it could possibly be bad gas so I went out again yesterday with new gas and encountered the problem right away and it never resolved.

my thought at this point would be starting by changing out the fuel filter and fuel pump but past that looking for suggestions on where to look next. Despite being mechanically inclined I have never worked on or troubleshot a 4 stroke outboard engine before.

also I plan on taking the boat to the dealership and having the diagnostics test ran on it to possibly steer me in the right direction.

thanks in advance for any advice you can provide.

 

[kfsrmn]

I had a similar problem with my 2012 90 hp. If you have the silver grey fuel line replace it. Simple as that with mine after chasing my tail for a while. New fuel filters wont hurt. I did that too but it did not cure the problem. Also check your air filter. The foam deteriorates and can break up. Mine was still in good shape but I sprayed it with K&N filter oil to preserve it. There is a different non foam air filter available for about $90.

 

[Weshawk5]

i appreciate the reply. I took it apart today and ordered new fuel filters. I will replace the fuel line also. A guy on another forum said that he had the same problem and the inner lumen of the fuel line had collapsed.

I had a similar problem with my 2012 90 hp. If you have the silver grey fuel line replace it. Simple as that with mine after chasing my tail for a while. New fuel filters wont hurt. I did that too but it did not cure the problem. Also check your air filter. The foam deteriorates and can break up. Mine was still in good shape but I sprayed it with K&N filter oil to preserve it. There is a different non foam air filter available for about $90.

 

[Weshawk5]

Took the fuel filters apart and it was full of “break down” from the fuel line. This was the problem exactly I think. Canceled order on filers and going to replace the line. Thanks again.

i appreciate the reply. I took it apart today and ordered new fuel filters. I will replace the fuel line also. A guy on another forum said that he had the same problem and the inner lumen of the fuel line had collapsed.