MarineEngine.com - Your online store for all types of marine engines and boat parts.
PHONE ORDERS
Monday - Friday
9:00 AM - 5:00 PM EST
Click for TOLL-FREE Number
Online Checkout
Special $9.95 Flat Rate Shipping
(800) 209-9624 | Home | Contact | Shipping | Returns | Cart View your shopping cart.
Part Number Search
Shop by engine/drive part number.
Original & matching parts for sale.
Manuals & Accessories
Shop by description, item number
or manufacturer's model number.
Boat Repair Forum Boat Repair Forum   Boat Video Gallery Video Gallery
   
Results 1 to 13 of 13
  1. #1
    Join Date
    Aug 2009
    Location
    Cordova, Alaska, United States
    Posts
    9

    Default "I have a 2005 Yamaha 115 hp f

    "I have a 2005 Yamaha 115 hp four stroke that stutters mid-range between 2600 - 3000 rpm. Runs fine above and below this range otherwise, but just goes to pot in the mid-range band. Has new plugs, fuel filters have all been changed, everything looks great otherwise. I have even been making sure that the primer bulb in the fuel line is full so that it can't be starving, which would be evident as it operates fine above and below these RPM's. This started back in June and is inconsistent"

  2. #2
    Join Date
    Apr 2008
    Location
    Hopewell, VA, USA
    Posts
    201

    Default "I'm not sure, but with yo

    "I'm not sure, but with you saying "This started back in June and is inconsistent". Sounds like a computer problem, if it has one.?."

  3. #3
    Join Date
    Feb 2009
    Location
    perth, wa, Australia
    Posts
    956

    Default Jeff is your engine fuel injec

    Jeff is your engine fuel injected or carbys

  4. #4
    Join Date
    Aug 2009
    Location
    Cordova, Alaska, United States
    Posts
    9

    Default "Lee, By my saying that

    "Lee,
    By my saying that it is inconsistent, meaning that it happens most of the time, but not all of the time. The motor is always warmed up well as I don't like to rev up on a cold start.

    Jamie,
    It is fuel injected. I also tried injector cleaner in the fuel a tank ago (80 gal) and that made no difference in the performance mid-range. If I put it on no load whatsoever, it still does the same thing and shakes and shudders if left in that RPM range, but is fine at any RPM below and above that 2600 - 3000 RPM."

  5. #5
    Join Date
    Jun 2009
    Location
    united kingdom
    Posts
    31

    Default i had the same problem as you

    i had the same problem as you but with a 80hp yamaha.
    id say you need to pull your injectors out and give them a clean.

  6. #6
    Join Date
    Dec 2008
    Location
    Victoria, B.C., Canada
    Posts
    645

    Default I had a mid-range stutter on m

    I had a mid-range stutter on my 200 2 stroke...bad coil..the coils change voltage output from low to high rpms...2 off mine where acting up during this change of voltage causing a stutter at the same rpm...otherwise ran great.

  7. #7
    Join Date
    Sep 2006
    Location
    SF BAY AREA, CALI, USA
    Posts
    8,641

    Default time to plug it into YDS if fu

    time to plug it into YDS if fuel infected
    HUMAN BUILT = HUMAN FIXED

    CERTIFIED MARINE TECHNICIAN

    WWW.SWITCHBAIT.COM

  8. #8
    Join Date
    Aug 2009
    Location
    Cordova, Alaska, United States
    Posts
    9

    Default "JUST-IN-TIME, Pardon my

    "JUST-IN-TIME,
    Pardon my ignorance, but what is a YDS? Is it a test instrument of a sort? I am in a very rural fishing village in Alaska. The nearest repair facility is in Anchorage and quite a distance away. If this is a test instrument, where would one get it? I am weighing the cost of a $1200.00 trip versus buying the needed instruments. Jeff"

  9. #9
    Join Date
    Sep 2006
    Location
    SF BAY AREA, CALI, USA
    Posts
    8,641

    Default yamaha diagnosis system

    yamaha
    diagnosis
    system
    HUMAN BUILT = HUMAN FIXED

    CERTIFIED MARINE TECHNICIAN

    WWW.SWITCHBAIT.COM

  10. #10
    Join Date
    Aug 2009
    Location
    Cordova, Alaska, United States
    Posts
    9

    Default "JUST-IN-TIME, That make

    "JUST-IN-TIME,
    That makes perfect sense. I tried to come up with an acronym for that before I replied last night, but the brain was dead at that point. Any idea where one would come up with one of these? I have tried direct contact with Yamaha, but to no avail. Not exactly pleased with their P.R., though I like the motor.
    Jeff"

  11. #11
    Join Date
    Sep 2006
    Location
    SF BAY AREA, CALI, USA
    Posts
    8,641

    Default "$500 for it, LOL dang man

    "$500 for it, LOL

    dang man ur up in north pole

    PR is great but you need to be a technician, they hate to deal with customers

    i can loan ya mine for $300, then when you return it i will give the $300 back to ya"
    HUMAN BUILT = HUMAN FIXED

    CERTIFIED MARINE TECHNICIAN

    WWW.SWITCHBAIT.COM

  12. #12
    Join Date
    Feb 2009
    Location
    perth, wa, Australia
    Posts
    956

    Default Thats a great offer Jeff

    Thats a great offer Jeff

  13. #13

    Default Mine was doing the exact same

    Mine was doing the exact same thing for about a month..It is a 200hp VMAX EFI..Finally got it fixed two days ago. The little green filters on the front of the injectors were dirty. Cleaned them and the boat now runs better than ever.

Similar Threads

  1. 2005 yamaha 115 hp 4 stroke sputters in midrange
    By jcraig in forum Yamaha Outboard Forum
    Replies: 1
    Last Post: 09-01-2009, 11:00 PM
  2. 2005 Yamaha 115 hp 4 stroke midrange sputters
    By jcraig in forum Yamaha Outboard Forum
    Replies: 1
    Last Post: 08-16-2009, 06:01 PM
  3. 2002 225 Yamaha 4 Stroke spits and sputters above 2000 rpms
    By mkalink in forum Yamaha Outboard Forum
    Replies: 0
    Last Post: 07-12-2009, 06:53 PM
  4. 96 Yamaha 50hp 4 stroke midrange miss
    By rossinmn in forum Yamaha Outboard Archive
    Replies: 0
    Last Post: 07-10-2009, 11:04 PM
  5. 2005 mercury 115hp carb two stroke stall problem
    By nz_morry in forum Mercury Mariner Outboard Archive
    Replies: 3
    Last Post: 02-11-2009, 12:05 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •