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Thread: K8 gsxr 1000 dies in the rain

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    Member Gixxer 7's Avatar
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    K8 gsxr 1000 dies in the rain

    So ive had my gixxer thou for a bit over a year now....
    Its always run a bit rough in the rain and in Wednesdays downpour it died in the arse all together.

    All dried out and she starts again now and runs fine.

    I havent taken anything apart to have a look yet but has anyone else had this problem???

    Im assuming its a sensor somewhere?
    Should get some time on sunday to check it over

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    Member TurboR1's Avatar
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    Tricky one as the first 3 places I would be looking is your ignition barrel, side stand switch and connector and the kill switch.

    Iíve seen a dry solder join inside the handlebar switch gear cause issues and also on race bikes when people bypass their side stand switches.

    These are easy checks and best done first before moving onto more complicated areas.

    Itís weird though as these switches need to be closed in order for you bike to run, something an excess of water would assist with.

    My money is a short in a connector when it gets wet on or near the ECU or power commander if you have one.
    Trying to think of a wise and sincere signature quote, but the only words that leap to mind are, "TITTY SPRINKLES"
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    Member Gixxer 7's Avatar
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    No power commander.

    But yeah was gonna go through the kill switches first and go from there.
    It ran rough in smoke too a while back so maybe a sensor in the air box?
    Could be getting water in there too when it rains maybe?

    Was fine on the freeway then when i backed the throttle off for the lights at the end it wouldnt power back on?
    Pulling the throttle did pretty much nothing and it choked up and cut out....

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    Airbox sensor could be a strong possibility, The Mass Air Flow Sensor (MAF) is quite delicate, these can get saturated by all manner of things.

    Aerosol Silicon sprays are a death sentence for them, any silicon really, so much so that on 4WD snorkel installations you need to use a silicon free gasket goo, as even the vapours coming off it when it is setting is enough to kill them.

    There are some MAF sensor cleaners on the market, but I you'll need to do a search if Supercheap or similar sell them. Ditto do a search for the K8 workshop manual and you can find the test to check if the MAF is still good or not.
    Last edited by TurboR1; 01-09-2018 at 08:46 AM.
    Trying to think of a wise and sincere signature quote, but the only words that leap to mind are, "TITTY SPRINKLES"

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    It's the battery.
    The only thing wrong with a perfect ride to work is that you end up at work.
    G T
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    What airfilter you running? I would be popping the tank off and checking it first for moisture, have heard of issues with some in the rain.
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    WD40 in the handlebar switches too...anything that is open to the elements...such as the ignition switch and handlebar switches would be my first suspects. Also check the reg rec...fitted to the belly pan on a lot of Suzukis...water ingress from road spray etc.
    Smoke me a kipper...I'll be home in time for breakfast

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    Member Gixxer 7's Avatar
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    Its not the battery... Rode it to work today and all ran fine.

    I have a workshop manual on my computer. Got it when i bought the bike. (its stoneville's on gixxer thou)

    Think ill start with the airbox, switches and check the battery anyway.

    Its got a k&n air filter... Same as i have in the 750.

    Could be something to do with the exhaust vavle too maybe??

    Will start looking tonight when the kids go to bed... Too hard basket fixing stuff during the day with 5 of them..

    And thanks for all the suggestions so far...

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    Tough to diagnose when it's not experiencing the fault.

    But I reckon Turbo hit it with the intake sensor. My brother's 370Z experienced exactly the same thing when the cold air pods sent water to the MAF Sensor.

    If that's not it then I'd wet the bike until it experiences the symptoms again. Then check the leads. Then the coils. And if you still haven't found it then the entire loom for a frayed wire and use plenty of contact cleaner and electrical lubricant on all the switches, plugs and earths.

    If that fails then I'll buy it off you for $50
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    Id be checking your spark plugs, coil packs. Spark plugs could possibly be getting wet or the coil pack skin could be damaged and getting wet.

    Also check your coolant temp sensor and inlet temp sensor as both will be linked to assist with your cold start fuel trim and engine starting.

    If the inlet temp sensor was faulty even temporarily it would have thrown a code, workshop manual should show you how you this menu

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    Trying to think of a wise and sincere signature quote, but the only words that leap to mind are, "TITTY SPRINKLES"

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    Quote Originally Posted by Green Trident View Post
    It's the battery.
    OK I still say it's the battery, but it's an intermittent fault.
    The only thing wrong with a perfect ride to work is that you end up at work.
    G T

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    Member Gixxer 7's Avatar
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    Didnt really get much time to do anything today....
    Checked the switches and took the airbox off.
    Switches seem ok but had some foamy lookin oil in the airbox where the breather comes up from the motor. Wasnt alot but havent had that in any of my bikes before. Water in the motor?
    Will give it a run in the rain this week and see what it does??
    Then i'll pull the plugs out during the week sometime and see how they are....

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    Member Gixxer 7's Avatar
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    Well after having no issues since last week.... She went iffy again today!!
    Started fine leaving work then about 15 min up the road it started coughing and splutting up the freeway.

    Pulled over... Turned off... Restarted but kept doing the same. It wasnt raining but the bike had been in the rain all arvo.
    Basically feels like misfiring so i'll get into the plugs on the weekend.... Was only doing it under 4000rpm too. And was a little better if i put it in C mode.

    ?????? Dunno!??

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    When you lift the tank next take off the fuel pump and replace fuel filter. Will be another thing off the list.
    yes, i am ignorant
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    Member TurboR1's Avatar
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    What have you checked and confirmed to be good so far?
    Trying to think of a wise and sincere signature quote, but the only words that leap to mind are, "TITTY SPRINKLES"

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    Member Gixxer 7's Avatar
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    went through all the switches and pulled the air box off to look at any sensors in there...and clean the filter... checked the battery too. So havent checked alot as it wasnt doing anything strange when i was looking at it and was busy all weekend with work and My Mum got Married on Sunday !

    It was running fine even in the rain again until yesterday... no fi light came on or anything this time either. Started fine this morning but ive left it at home anyway.

    I'm riding the 750 for the rest of the week... I'll have time to give it a good check over this sunday. I'll swap out the plugs too.

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