Results 1 to 7 of 7
  1. #1

    Join Date
    Feb 2008
    Location
    No. MN
    Posts
    320

    Dam: Just Figured Out I am Down on PRM - 03 MSX 140

    Last year I was beating my 150 with this thing. Seemed to run OK this year, but due to my 50 year old brain, I never paid attention until last week when I could not get it much past 55-56 mph. Drove it around and it is steady at 6,400 rpm. Motor checks out and it idles fine.

    I now think this is why it will not fire after sitting a few days too. It was missing at WOT earlier in the spring too. I am going to check spark, TPS, and ground wires.

    What else should I be looking for?


  2. #2

    Join Date
    Jul 2011
    Location
    Juneau, Alaska, United States
    Posts
    13
    Check your fuel pressure, my 03 140 just had the reg fall off into the tank, I put the Kawi inline reg on it yesterday and I have 33psi of fuel pressure when I was basically getting 0 before. Mine would only turn about 3800 rpm with little to no fuel pressure.

  3. #3

    Join Date
    Feb 2008
    Location
    No. MN
    Posts
    320
    Have a new fuel pump with about 18 hours on it. If the fule pump goes, I suspect you fry yth emotor. Motor check's out.

    I am leaning toward TPS, but that new early last year.

  4. #4

    Join Date
    Feb 2008
    Location
    No. MN
    Posts
    320
    any other suggestions?

  5. #5
    Rasta Mon Condoms We Be Jammin!!!!! TxVirageTx's Avatar
    Join Date
    Aug 2006
    Posts
    5,777
    +1
    405
    wasn't there issues with the stator bolts being to long and it moving around

  6. #6

    Join Date
    Feb 2008
    Location
    No. MN
    Posts
    320
    Yeah, but when I re-built it, I cut those bolts down and used loctite blue when I re-installed them.

  7. #7

    Join Date
    Feb 2008
    Location
    No. MN
    Posts
    320
    Well one of my plugs was loose. Now it hit hard to 6700-6800, then falls off to 6500-6550. Seems like the motor is being trimmed back. Maybe TPS?

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 14
    Last Post: 08-02-2015, 02:10 PM
  2. Replies: 3
    Last Post: 12-04-2010, 08:34 AM
  3. carb problems(boggs down) on a 03 700 twin
    By fordpower in forum Polaris Open Discussion
    Replies: 5
    Last Post: 10-20-2010, 11:25 AM
  4. Am I down on power? 03 gtx sc 4 tech
    By caflashbob in forum 4-Tec Performance
    Replies: 40
    Last Post: 07-30-2007, 06:04 PM
  5. Thoughts/potential problems on '03 MSX-140 D.I.
    By Nefarious in forum Polaris Open Discussion
    Replies: 3
    Last Post: 06-27-2007, 09:22 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
  •