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**Samarth 619** · 07-05-2012, 03:19 PM

Topic Approved.

I'm not sure if shifting to other companies is a good idea just because of this experience. Maybe some mechanics screwed it up?

R15 owners kindly help docv...

**adityabhelke** · 07-05-2012, 04:41 PM

Have you checked the quality of the fuel in your local area.
Bad fuel can leave the fuel pump and fuel lines in a bad state... some sort of deposits can happen clogging the lines.
Have you checked the fuel filters? There should be at least two of them, one before and after the fuel pump.
Have you checked the fuel tank from inside.. any water, particulate matter, heavy deposits in the tank can hamper the fuel pump performance.
I will suggest to use a compatible and authorized fuel line cleaner to see if that helps.
Have you check for error codes from the ECU? These codes will indicate inter failures.. sensors, MAP sensor pressure etc.

Yamaha and all others make very good bikes and parts. The humans who work on them are not always the best. So find the best mechanics who are willing to spend time on your machine.

Good luck

**psr** · 07-05-2012, 07:01 PM

Originally posted by docv View Post

Hello guys
I owned my R15 from last 4 years and never had any problem in my bike in this time. But 2 years ago I faced a serious problem in my bike's fuel pump and it was due to over heating of the fuel pump as the bike was parked in hot open garage in my house for 1 month. At that time I visited at Yamaha Service Station for for multiple times but the service guys were unable to resolve this problem. Then a service guy found that the bike's fuel pump do not respond whenever its parked in hot places and indeed he was right, after taking it in a cool place (at least for 30 minutes) the starts perfectly runs like anything never happened to it.
But yesterday it was very hot and I started my bike in the morning after 30-35 days, as usual it starts at the self. Then I rode it to a near by place and parked it in the parking, after one hour when I was about to go home it happened again. Bike's fuel pump stopped responding

Petrol deteriorates in 15 days time and forms varnish like deposits after 20 days.It is this deposit which is jamming your pump...
If you leave larger quantity and then after 30~35 days you start using it, it is bound to give you problems....
Both the times you have had problem only after parking the bike for 30~35 days..
For the present problem empty your tank fully and fill with fresh petrol of 1 liter ,and add System G available from BP,and ride around...after 20 Kms ride ,add another 1 liter,and add System G additive which is meant to cleanse the system, and drive normally...Never leave any Petrol tank with Petrol, if you are going to park the Vehicle.

The best way to do it is to Empty petrol tank before parking...and fill with fresh petrol when you want to use it..

**Eshan-P180** · 07-05-2012, 07:12 PM

Originally posted by psr View Post

Petrol deteriorates in 15 days time and forms varnish like deposits after 20 days.It is this deposit which is jamming your pump...
If you leave larger quantity and then after 30~35 days you start using it, it is bound to give you problems....
Both the times you have had problem only after parking the bike for 30~35 days..
For the present problem empty your tank fully and fill with fresh petrol of 1 liter ,and add System G available from BP,and ride around...after 20 Kms ride ,add another 1 liter,and add System G additive which is meant to cleanse the system, and drive normally...Never leave any Petrol tank with Petrol, if you are going to park the Vehicle.

The best way to do it is to Empty petrol tank before parking...and fill with fresh petrol when you want to use it..

Can this be the sole reason for a burnt fuel pump??

I have heard this before, PSR Ji can you please explain me also how can quantity of fuel can hamper the working of the pump. 7,000rs is too much for that part. Or what you mentioned is the only and the sole reason for a burnt pump. Please explain me this concept.

**psr** · 07-05-2012, 07:43 PM

Originally posted by Eshan-P180 View Post

Can this be the sole reason for a burnt fuel pump??

I have heard this before, PSR Ji can you please explain me also how can quantity of fuel can hamper the working of the pump. 7,000rs is too much for that part. Or what you mentioned is the only and the sole reason for a burnt pump. Please explain me this concept.

The Petrol is a chemical and when exposed to air reacts and slowly changes it's property..It is during the changing of the property,that the petrol forms sticky Varnish like deposit. This deposit has Sticky quality and if the flow of such Petrol is stopped, the sticky material sticks to all moving parts it is in contact with, leading to jamming....The gum like formation is directly proportional to the quantum of Petrol..ie., for 1 liter it will be less as compared to say 3~5 liters, for the same period,because you have larger amount of Petrol available to change and hence more quantum of deterioration.
How I know ? I once stored 20 Liters of Petrol(for 30~40days) in my Esteem(Carb type) and 20 kms from home engine started missing and after some time one cylinder packed up and wouldn't fire.....managed to come back home on three cylinders sounding like a Bullet, and after a long session the engine head was opened to find that the 4th cylinder Valve was stuck in open condition...Why the other valves did not get stuck ? I presume the valve guide clearance was much higher in others compared to the 4th one.. The entire tank was taken out and emptied ,then soaked and washed with Acetone..

**princesirohi** · 07-06-2012, 12:50 AM

psr ji... i also want some more knowledge of this-

i have also heard and read about this petrol deterioration thing a lot and this thing is also discussed before on xbhp itself many times in other threads, and if i remember correctly, even some of non R15 owners have faced some problems in past with carb type bikes.

now i have the good old P150 UG3 ... and every year i go to my home town for say 30 to 60 days once a year. during this time my bike is totally unused and parked untouched. when i return, i never face any issues due to petrol deterioration other then more starter cranks for thw first time i start it after returning, after that the buke runs perfectly fine. i normally leave 5 to 10 litres in tank. how come i never get any problem except battery disharge sometimes. is it because my bike has carb, but i think i remember some guys having problems due to petril deterioration even in carb'd bikes.

**Gyroerror** · 07-06-2012, 01:08 AM

Bad fuel or clogged fuel lines would effect the pump hot or cold. Docv is experiencing the problem only when the fuel is heating up so its not a case of bad fuel or any blockages.

My bet is that its the fuel pump relay which is acting up and not the pump. The fuel pump will either work or not at all, if its working when its cool outside means its in good shape. Get a relay from another bike to test it out first before you go buy one, just in case I am wrong.

**docv** · 07-06-2012, 01:38 AM

Bike's fuel pump gets heat up and don't respond till it gets cool down.

Thanks everyone for your valuable suggestions, now my bike is working as I didn't parked it in any hot place. I have a only one mechanic from the day I bought this bike and he was trained from Yamaha Factory headquarter , he knows almost everything about this bike and last time when I got the replacement of same module under warranty he was the one who found this fault in my bike then with the help of Area Service Engineer of Yamaha he replaced the pump under warranty. And now that Yamaha Engineer is changed and the current engineer denied to agree with me for faulty module. Actually its very annoying that you need to change the same module right after 1-2 years. Anyway I am looking for a guy who can fix this over heating problem in the bike.

**docv** · 07-06-2012, 01:54 AM

Bike's fuel pump gets heat up and don't respond till it gets cool down.

Originally posted by psr View Post

Petrol deteriorates in 15 days time and forms varnish like deposits after 20 days.It is this deposit which is jamming your pump...
If you leave larger quantity and then after 30~35 days you start using it, it is bound to give you problems....
Both the times you have had problem only after parking the bike for 30~35 days..
For the present problem empty your tank fully and fill with fresh petrol of 1 liter ,and add System G available from BP,and ride around...after 20 Kms ride ,add another 1 liter,and add System G additive which is meant to cleanse the system, and drive normally...Never leave any Petrol tank with Petrol, if you are going to park the Vehicle.

The best way to do it is to Empty petrol tank before parking...and fill with fresh petrol when you want to use it..

Your answer has some sense Sir, but I already cleaned its fuel tank in the later evening after this failure, it has no concern with the fuel pump as I always use high quality petrol in the bike. But last time the Service Engineer of Yamaha Factory told me that there's a chip sort of thing in the fuel pump which manages the flow of fuel in the FI system and usually it fails in hot conditions. But he also told me that the stock module is modified according to Indian weather conditions. And I think last time servicing dealer replaced the module with the same which comes in the 2008 models

. I think that's why I suffered again with the same problem.

**docv** · 07-06-2012, 02:01 AM

Bike's fuel pump gets heat up and don't respond till it gets cool down.

Originally posted by Gyroerror View Post

Bad fuel or clogged fuel lines would effect the pump hot or cold. Docv is experiencing the problem only when the fuel is heating up so its not a case of bad fuel or any blockages.

My bet is that its the fuel pump relay which is acting up and not the pump. The fuel pump will either work or not at all, if its working when its cool outside means its in good shape. Get a relay from another bike to test it out first before you go buy one, just in case I am wrong.

Thanks for reply Sir, I will definitely try this.

**utsavchs** · 07-06-2012, 03:56 AM

Hello respected sirs, I would like to throw some light on this issue. I own a Pulsar220 Fi edition. Had the same issue for 2 months, and after doing a complete analysis and R&D with every part, with support from Bajaj's Probiking and selective support from the Engineering team, I located the issue.

The issue that occurs, in my own words, is when the engine gets heated up and you switch off the engine, it refuses to start. Its not because of petrol, nor starter, not fuel pump etc etc etc. The issue is of the bike's electricals.

Check your wiring harness. I have a serious doubt that a wire near the ECU is shorted. Fix it, and your issue would be resolved.

Do inform me if it helped or not. (It helped me, I hope it helps you) Good Luck!

**Gyroerror** · 07-06-2012, 08:28 AM

Originally posted by princesirohi View Post

psr ji... i also want some more knowledge of this-

i have also heard and read about this petrol deterioration thing a lot and this thing is also discussed before on xbhp itself many times in other threads, and if i remember correctly, even some of non R15 owners have faced some problems in past with carb type bikes.

now i have the good old P150 UG3 ... and every year i go to my home town for say 30 to 60 days once a year. during this time my bike is totally unused and parked untouched. when i return, i never face any issues due to petrol deterioration other then more starter cranks for thw first time i start it after returning, after that the buke runs perfectly fine. i normally leave 5 to 10 litres in tank. how come i never get any problem except battery disharge sometimes. is it because my bike has carb, but i think i remember some guys having problems due to petril deterioration even in carb'd bikes.

Petrol does go bad after a couple of months & the effects vary with different engines based on their efficiency. Basically over time petrol loses its volatility and does not burn very well. For our outboard motors we replace the fuel every 3 months as the engines are not very efficient and the petrol tanks are not very gas tight.

I don't bother with the fuel on my motorcycles and have never had a problem like you said. The more efficient your motorcycle is at burning fuel, the less of a problem you will have with old fuel.

**psr** · 07-06-2012, 10:31 AM

Originally posted by princesirohi View Post

psr ji... i also want some more knowledge of this-

i have also heard and read about this petrol deterioration thing a lot and this thing is also discussed before on xbhp itself many times in other threads, and if i remember correctly, even some of non R15 owners have faced some problems in past with carb type bikes.

now i have the good old P150 UG3 ... and every year i go to my home town for say 30 to 60 days once a year. during this time my bike is totally unused and parked untouched. when i return, i never face any issues due to petrol deterioration other then more starter cranks for thw first time i start it after returning, after that the buke runs perfectly fine. i normally leave 5 to 10 litres in tank. how come i never get any problem except battery disharge sometimes. is it because my bike has carb, but i think i remember some guys having problems due to petril deterioration even in carb'd bikes.

My problem was first with a Carb., Esteem and then with my KB100.In KB for nearly 45 days I had not taken the vehicle for a spin..I had about 3 liters of petrol in it..when i started using it, everything was ok for the first 50 odd kms and then the problems started. The bike would suddenly cut off and will not start...after a few times, I found that the float needle was sticking and not allowing petrol to flow into the carb...Again after draining the tank and cleaning up the Carb., fully, the problem did not repeat so far..
I guess again you had been one of the lucky person....or you might have filled in some Fresh petrol within a few kilometers, thereby diluting the effect...I am just guessing....In a four stroker either the valves become sticky or the Carb float pin gets stuck, not allowing petrol to flow..These are the problems I faced with Old Petrol ..

**docv** · 07-06-2012, 02:08 PM

Bike's fuel pump gets heat up and don't respond till it gets cool down.

Originally posted by utsavchs View Post

Hello respected sirs, I would like to throw some light on this issue. I own a Pulsar220 Fi edition. Had the same issue for 2 months, and after doing a complete analysis and R&D with every part, with support from Bajaj's Probiking and selective support from the Engineering team, I located the issue.

The issue that occurs, in my own words, is when the engine gets heated up and you switch off the engine, it refuses to start. Its not because of petrol, nor starter, not fuel pump etc etc etc. The issue is of the bike's electricals.

Check your wiring harness. I have a serious doubt that a wire near the ECU is shorted. Fix it, and your issue would be resolved.

Do inform me if it helped or not. (It helped me, I hope it helps you) Good Luck!

Thanks for your valuable suggestion sir, Our Mechanic had already checked the wiring of Fuel Pump but didn't checked near ECU. But still while using my bike's fuel pump on another R15 didn't gave any response in the same scenario and its own fuel pump works well on my bike.

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R15 fuel pump heat up problem, bike do not starts till it gets cool down.

R15 fuel pump heat up problem, bike do not starts till it gets cool down.

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