kalkat

Around 3 months back, my R15 started dying on me once in a while (meaning engine goes off after being on for some time). The problem has got more pronounced in the last few weeks where it hardly starts for a minute or two, and after a couple of retries, stops restarting at all.

Took the bike to the dealership this Fri, I was kinda thinking that the spark plug is shorting once the engine gets heated up (confirmed and even apparently "fixed" by another dealership outlet last month here in blore, morons!)
Anyway, the dealership guys at the new place tested and said that the fuel pump was going kapoot instead, and was not pumping up fuel properly. Thought it should be just about cleaning it up, was shocked to hear from them that there was no way to fix the problem by cleaning up the fuel pump and it would need to be replaced. And what is the cost of new fuel pump? Just Rs. 7350 I am told! And why did this problem occur? I am told its because the bike has not been used much for a long period of time. I am told that this has happened earlier for some more Yamaha bikes too.

Now, I am pretty seriously pissed off, esp with the reasoning for pump getting messed up. It is is a race bike (have another for street), has some 5000km on the odo in 2.5 years with last year seeing around 1000km. Agree thats not a truck load of kms, but that is far from sitting idle too. And anyway, that is not hugely low kms for a race bike, this is exactly how race bikes r supposed to be!

I plan to take the issue back to Yamaha guys and hear what they got to say, but would like to hear if anybody else here has had the same problem. Or if the R15/Yamaha lovers over here got anything to add that I don't know yet...

Kalkat

sunilg

Query approved.

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jd666

i have done about 10,800 kms or so in the last 2.2 years of my R15. The issue is not with the bike lying idle. It is if you run it on too low a fuel level, too frequently. That causes the muck, dirt and other settled impurities in the tank to get sucked into the pump.

Solution - To keep a higher than half tank fuel level, even if the bike is parked. My bike has been parked for weeks with no issues with starting, idling or the fuel pump. Just keep and ride it at a higher fuel level always.

I remember seeing a similar issue with R15s owned by college kids, they would generally run the bike on reserve or very close to reserve, and the fuel pump would go bad soon.

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RhythmRana99

which oil you used? and is your bike used many times on reserve??

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jigar2speed

57,500 Kms done, never touched fuel pump, my baby is running happily here.

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shrinathrao

Put a mail to yamaha back office and check for solutions, i think they may replace it under warranty.

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abhijeet080808

I feel its the injector which is clogged. Even my bike which ran 5k kms in 2 yr had this issue. It also hiccuped at around 4k rpms and above all the way to the red line. Just cleaned the tank and subjected her to some hi rev riding. Its behaving fine ever since. I am at 11k kms now.

So, did you ask the SVC to clean the injector/throttle body?

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kalkat

Nope, the bike is hardly ever running at low levels of fuel. More than 60% of the 5k has been on the track, including the last two times by a friend (I think he goes here as "footloose"). And the obvious thing for the track is to fill up the tank and then run happily for the next coupla days. The fuel used is BP Speed at minimum, and couple of times a higher octane one.

What does not make sense to me is the dealership saying the only option is replacing the fuel pump. Cannot understand why cleaning the pump/injectors is not the solution for dirt getting sucked in.

Does anybody here has the mail id or something?

Appreciate guys.

RhythmRana99

may be your friend used low quality fuel. because this is the main reason of fuel pump clogging.

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santoosh

ALso , there was a word from the ASS Guys that there is a Fuel pump change coming soon for all the R15 after the Radiator , plastics :-)..
Hope u get urs FOC

Been 40+k and No issues with injectors , I keep using Fuel Injector cleaner once in a while .

Santa

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