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Yamaha FZ 25 Owners Reviews and Experiences

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  • arjun bharadwaj
    replied
    Re: Yamaha FZ 25 Owners Reviews and Experiences

    Originally posted by slopegatri View Post
    well the noise is irritating for sure (i like it tho) but if you need more proof if it's harmful or not, just look at these bikes which are having same engine as our FZ25-

    1. XT250 from 2008 to 2019 also called Serow 250 in Japan.
    2. Fazer 250 (Brazil), currently on 3rd generation which is similar to what we have here.

    Both of those have this coin rattling noise coming from balancer mechanism @4-6k rpm. and people have done 70-80k miles (110-128k kms) on their bikes without engine/ performance issues.(source- old posts in xt225 forums) this engine is in production since 2008, and in those 11 years it has gained -

    1. oil cooling.
    2. Fuel injection (Brazilian fazer can run on ethanol as well).
    3. 3-5ps power and 3-4nm torque increase.
    4. intake and exhaust port tweaks.

    That means Yamaha has constantly improved this engine over time, what remained is coin rattling noise, if it was actually an issue they would have fixed it in those 11 years. the fact is, if engine isn't reliable it cannot survive for 11 years in different countries in different bikes through different emission norms.

    i don't think Bs6 version will see any fix to this, but there might be some other upgrades as its been 3 years since the launch which is enough for version 2 makeover.
    Thank you so much for the detailed response sir. The summary I infer is that bs4 and bs6 would have their individual merits but the coin rattling is unlikely to be touched. Also the power drop in bs6 models might reduce the low end a bit and the cost would be up.

    Also did your bike go fot the recall job to fix plate bolts? How has it been behaving since?
    Last edited by arjun bharadwaj; 12-23-2019, 12:39 PM.

    Leave a comment:

  • prakash_mvpa
    replied
    Re: Yamaha FZ 25 Owners Reviews and Experiences

    Originally posted by prakash_mvpa View Post
    Coin rattling noise comes at 4k rpm. He checked at by revving to the 4-5k rpm when stationary. I should also tell that the coin rattle noise has increased only after opening the side cover as part of recall job. It is audible even when stationary revving up rpm, albeit more prominent when you ride at 4-5k. Timing chain tensioner adjustment and plate breather bolts glued and tightened again. This has some effect in reducing the coin rattle noise.
    Resetting timing chain tensioner did not work. The coin rattle noise returned as earlier after a short highway ride. I had a talk with the service manager and he says should leave the bike for 2 days to open the head to check. I think I should not do that. Meanwhile, they adjusted the valve clearances which may be why I face the low end grunt reduced but the top speed remains. The mileage (FE) also has gone for a toss. It is giving 26-32kmpl in city conditions.

    What can be done? Is it the wrong valve clearance affecting the bike performance?

    Leave a comment:

  • slopegatri
    replied
    Re: Yamaha FZ 25 Owners Reviews and Experiences

    Originally posted by arjun bharadwaj View Post
    This is very reassuring for the brand. Curious to see if they launch a bs6 version and if they have done anything about this rattling issue on it. This is a dream bike for me with the kind of low end torque it's got. The above is a factor that is keeping me confused.
    well the noise is irritating for sure (i like it tho) but if you need more proof if it's harmful or not, just look at these bikes which are having same engine as our FZ25-

    1. XT250 from 2008 to 2019 also called Serow 250 in Japan.
    2. Fazer 250 (Brazil), currently on 3rd generation which is similar to what we have here.

    Both of those have this coin rattling noise coming from balancer mechanism @4-6k rpm. and people have done 70-80k miles (110-128k kms) on their bikes without engine/ performance issues.(source- old posts in xt225 forums) this engine is in production since 2008, and in those 11 years it has gained -

    1. oil cooling.
    2. Fuel injection (Brazilian fazer can run on ethanol as well).
    3. 3-5ps power and 3-4nm torque increase.
    4. intake and exhaust port tweaks.

    That means Yamaha has constantly improved this engine over time, what remained is coin rattling noise, if it was actually an issue they would have fixed it in those 11 years. the fact is, if engine isn't reliable it cannot survive for 11 years in different countries in different bikes through different emission norms.

    i don't think Bs6 version will see any fix to this, but there might be some other upgrades as its been 3 years since the launch which is enough for version 2 makeover.
    Last edited by slopegatri; 12-23-2019, 08:20 AM.
    • Likes 1

    Leave a comment:

  • arjun bharadwaj
    replied
    Re: Yamaha FZ 25 Owners Reviews and Experiences

    Originally posted by slopegatri View Post
    There's no way you can get coin rattling noise at idle or below 4k rpm. the noise you were getting was tappet noise which can be reduced by reducing valve clearances.
    they most likely reduced it and reset the tensioner too even if it wasn't required ( it done as required there's no too low/high mileage period for this afaik) . nothing to worry about just ask them what are the clearance values they have set otherwise too tight values will give you troubles later.

    no point in opening engine head, there's no fix for actual coin rattling sound that comes around 4-5k rpm. have recently met a fz25 owner who has done 71k kms on this bike. coin rattling sound is present on his bike as well( along with tappet noise). and apart from regular service only thing he changed are - both tyres, chain set, clutch cable and brake pads. no performance issues on his bike. this just further proves that noise is harmless.
    This is very reassuring for the brand. Curious to see if they launch a bs6 version and if they have done anything about this rattling issue on it. This is a dream bike for me with the kind of low end torque it's got. The above is a factor that is keeping me confused.

    Leave a comment:

  • Vishal Rohra
    replied
    Re: Yamaha FZ 25 Owners Reviews and Experiences

    Originally posted by niteshtilwani View Post
    Wobbling of the display unit is also normal?
    display does not wobble , only hedlight on rough patches

    Leave a comment:

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