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  1. #1
    stewartgpr's Avatar
    Join Date
    May 2007
    Location
    Bahrain
    Posts
    32

    slow RPM pick up GPR1300 06

    Gents

    i have had a few problems with my ski this year , Yamaha local dealer is not that good , i would like to do a lot more DIY fault resolution , there are many helpfull post on this site but i cannot find one for TPS adjustment , the service manuals also from this site seem to relate to a 2004 GPR with a 2005 suppliment , i am struggling to find any info on this setting.

    the problem i have is slow rpm pick up and a intermitant drop in high RPM , ski will only run 103 /105 kmph as opposed to 118 kmph when running fine . SKI is totaly stock

    i have seem similar issue on a Yamaha R1 where we lost power due to the wrong throttle sensor settings ( maybe not related to PWC )

    can anyone give advice on this problem ..

    the local dealer removed my throttle bodies and god knows what else while trying to find a faulty fuel pump sensor ( end cause ) , the oil feed was screwed up and was running 1 gallon of yamlube to every 2 tanks of gas , this slow pick up in RPM's is the only outstanding fault

    there are 4 of us with GPR's so i really notice the problem when back to back riding my mates ski's

    the slow pick up really screws up wave jumping and ruins a great day out

    mods are on order for the winter break but i would hate to mod a ski with this underlying problem:

    mods on order :

    1. d plate - my cat has been completly removed
    2. f/flow exhaust
    3. pump seal kit
    4. solas 13/19
    5. 3 deg nozzle
    6. 1200 grate
    7. ext trim tabs
    8. splash guard


  2. #2
    quadzilla's Avatar
    Join Date
    Apr 2007
    Location
    LOCH NESS Monster-Land
    Posts
    1,178
    +1
    29

    Exclamation Eh...???????????

    Hmmmmmm......!!!!!!!

    mods on order :
    1. d plate - my cat has been completely removed......( )
    2. f/flow exhaust
    3. pump seal kit
    4. solas 13/19
    5. 3 deg nozzle
    6. 1200 grate
    7. ext trim tabs
    8. splash guard
    #1 is your problem right there partner...!!!

    you need the cat or a d plate to give the engine back pressure...

    Unlike a 4stroke when the exhaust gas is gone its more or less done with,
    Other than for some cylinder scavenging...

    WHO took this cat out...????

    Also the 2004/05 supplement IS the manual you need
    Theres been no changes to the 05-07 except colours..

    Are you sure the cat is completely removed..???

    Gerry

  3. #3
    stewartgpr's Avatar
    Join Date
    May 2007
    Location
    Bahrain
    Posts
    32

    cat plate removed

    i belive the plate or mesh in this case was completly removed , both my mates 2006 ( 20 hours used ) and a 2007 model (6 hours ) have also been removed by our local mechanic

    a 3 ski's run fine , well mine did until he fxcked with it trying to locate a fault

    i may have a look this weekend and see if ALL the mesh in the Cat has been removed

    still can find TPS sensor adjustment , only output voltages

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