Bike won't run - GSXR750 K7

[f2dz]

Rode my bike through all the torrential rain so far this week to only have it not run this morning. Was running perfectly fine last night, nothing out of the ordinary.

Only thing that has changed is that I filled up the tank once I got home. Otherwise nothing else has changed and I have no idea what could be wrong.

The bike cranks, starts, but idles very low. Usually once started it will rev quite high for a few seconds then come down. Now it just stays low and dies if I don't keep revs on. As soon as I let go of the throttle it dies. Can start it easily again but will die once more. At best I got it to idle for around 4 seconds after the initial 10 second idle while I was putting my gear on when it died for the first time.

I was thinking I could have accidentally left my park lights on and drained the battery but the bike still starts fine and all the lights come on fine. No warning lights or anything like that.

Anyone have any ideas/encountered this before?

[ducatilover]

I'd check battery voltage.
Then start checking connections under the tank/fairings for moisture.
Check the fuel filter for water if possible

[Ribit]

Id phang the crap out of it to get it hot and evaporate any moisture and possibly clear out anything in the system.
if it did't come right after that then start pulling covers off.
Since someone else on here recently had problems with possible water in the fuel, ive wondered if Gull 96 would help clear water in the tank since its 10% ethanol which will absorb water. Run a couple of tanks of that through then go back to your normal supplier.

[Ribit]

Another thing that comes to mind is ive had these sorta symptoms when my car's oxygen sensor was dirty. ya can get a spray from auto stores that cleans it and it came right. I assume a k7 would have one too... ?

[Drew]

I'd clean the water out of the tank, put fresh gas in it, and carry on my merry way knowing to check that the over flow drain at my filler cap is always kept clean and free flowing.

[f2dz]

I'd check battery voltage.
Then start checking connections under the tank/fairings for moisture.
Check the fuel filter for water if possible

Will check these after work, cheers.

Id phang the crap out of it to get it hot and evaporate any moisture and possibly clear out anything in the system.
if it did't come right after that then start pulling covers off.
Since someone else on here recently had problems with possible water in the fuel, ive wondered if Gull 96 would help clear water in the tank since its 10% ethanol which will absorb water. Run a couple of tanks of that through then go back to your normal supplier.

I thought it would've dried up on the way home last night. It was pretty dry yesterday compared to the day before, but I'll check the fuel like you say.

Another thing that comes to mind is ive had these sorta symptoms when my car's oxygen sensor was dirty. ya can get a spray from auto stores that cleans it and it came right. I assume a k7 would have one too... ?

I'd clean the water out of the tank, put fresh gas in it, and carry on my merry way knowing to check that the over flow drain at my filler cap is always kept clean and free flowing.

It ran fine yesterday and that was after the massive rainfall the day earlier. How would water be getting into the tank anywho? I'll try draining the tank and refilling with fresh 98 if it comes to that I spose..

Just hoping I can get it running for the commute tomorrow. Rode my old 250 into work today but definitely didn't enjoy the lack of power/brakes/everthing else.

[Drew]

If the little drain beside the filler hole, under the cap but not the seal is blocked, water gets in when you open the cap.

[Katman]

It's quite often possible to get water or dirt into your tank after filling it if the gas station you use has just had it's storage tanks refilled.

The filling of the tanks stirs up all the water/dirt that may be sitting at the bottom of them.

[Ribit]

Katman
It's quite often possible to get water or dirt into your tank after filling it if the gas station you use has just had it's storage tanks refilled.

I've heard this too, id like to think there's filters between the storage tank and the pump nozzle to help prevent damage to customers vehicles... Wouldnt suprise me if there isnt though

[Drew]

I've heard this too, id like to think there's filters between the storage tank and the pump nozzle to help prevent damage to customers vehicles... Wouldnt suprise me if there isnt though

There are separators I think. But if the gas is flowing and a floating bubble of water makes it in with the flow, it's making it's way to your tank no trouble.

[SMOKEU]

It looked like someone had poured dirt into the tank of my GSXR, as it was that bad before I cleaned it out properly. I wouldn't be surprised if the tank has a fair bit of debris in it. Now's a good time to empty it out anyway.

[Kartik]

That's not good news mate. Hope you sort it out soon. At least you've got your little 250 to get around on......

Sent from my HTC_0P6B using Tapatalk

[Akzle]

That's not good news mate. Hope you sort it out soon. At least you've got your little 250 to get around on......

Sent from my HTC_0P6B using Tapatalk

jeez. And i thought i had irrelevancy nailed.

Sent from my hooker while shooting meth.

[Drew]

jeez. And i thought i had irrelevancy nailed.

Sent from my hooker while shooting meth.

There's an irony in that...and that....and that....and that....Oh fuck it's groundhog day

[SVboy]

K6/7s have a fuel prefilter inside the pump which can clog. The actual filter is in the pump body. Idling issues can be a tps (throttle position sensor)issue which involves putting the bike in dealer mode. Battery cond is often an issue with idle so check voltage using a load tester. Finally, this model has a reputation for reg/rec issues which affect charging and therefore idle/throttle response.The appropriate sub forum on gixxer.com may help once you filter the USA bullshit out. Hopefully it is just a bunch of bad gas/moisture in a connector!