CB650F CB650f valve cover oil leak

[Pikappa]

Hi everyone, I'm new here and I'm looking for some help. I have a 2017 Honda cb650f abs with 9k km and I noticed a slight exudation only and only in the place indicated in the photo, everything else is perfectly dry.

1)Does anybody has/had the same problem? Is that normal?

2)If not, before going to mechanic and replace the gasket, can I try to tighten the bolts with the correct torque specs? Does anyone know what are the correct torque specs for valvet cover?

Thanks for all the answers!

 

[maziro]

1)Does anybody has/had the same problem? Is that normal?

2)If not, before going to mechanic and replace the gasket, can I try to tighten the bolts with the correct torque specs? Does anyone know what are the correct torque specs for valvet cover?

1) My 650F doesn't have it. But water pump oil leak was occurred like attached picture. I had replaced the pump and it solved.

2) According to the service manual, torque specs for head cover is 10Nm.
You can check it yourself from below.
https://650f.bike/resources/service-manual.1/

 

[miweber929]

Hi everyone, I'm new here and I'm looking for some help. I have a 2017 Honda cb650f abs with 9k km and I noticed a slight exudation only and only in the place indicated in the photo, everything else is perfectly dry.

1)Does anybody has/had the same problem? Is that normal?

2)If not, before going to mechanic and replace the gasket, can I try to tighten the bolts with the correct torque specs? Does anyone know what are the correct torque specs for valvet cover?

Thanks for all the answers!

View attachment 10304

I would clean it and see if it comes back. That’s right at the spot Honda recommends you put sealant to hold the gasket in place during valve cover replacement so that may not be actual leakage but sealer.

 

[Pikappa]

I would clean it and see if it comes back. That’s right at the spot Honda recommends you put sealant to hold the gasket in place during valve cover replacement so that may not be actual leakage but sealer.

I have already cleaned it twice. But if I not clean it, the oil "disappeared" because it evaporates. it's too little for it to remain. Anyway, I'll try with tighten first, then I don't know... What do you suggest? Wait to see if it will get worst? Or replace the gasket?

 

[Brammers]

As @miweber929 said, there should be a small amount of sealant used during reassembly at that location.

Cover off, add sealant and put it back together. Should be fine afterwards.

J

 

[miweber929]

I have already cleaned it twice. But if I not clean it, the oil "disappeared" because it evaporates. it's too little for it to remain. Anyway, I'll try with tighten first, then I don't know... What do you suggest? Wait to see if it will get worst? Or replace the gasket?

If it evaporates, I’d suggest leaving it until it gets worse or doesn’t evaporate. Wouldn’t hurt to check torque, however.

 

[habanadj]

It seems to be a common problem for this model, I bought my new 2018 cb650f with this problem (it will evaporate and leave a white stain), I had to request the warranty, after it was fixed I have had no more problems

CB650F - valve cover oil leak, 2,400miles

Hello it looks like oil is leaking through the valve cover , I noticed a burn smell after a highway trip for one hour of 100mph avg and peak of 130mph. The bike is 2018 but still under warranty but I want to know if these is kind of urgent or it can wait for a week or two (I need some time...

650f.bike

 

[Brammers]

The "white stain" might not have been an actual fault - but without pictures it's almost impossible to say for sure.

The rubber does leech a white powdery substance which can be wiped off and over time stops happening. My 2014 no longer does it.

J

 

[Pikappa]

1) My 650F doesn't have it. But water pump oil leak was occurred like attached picture. I had replaced the pump and it solved.

2) According to the service manual, torque specs for head cover is 10Nm.
You can check it yourself from below.
https://650f.bike/resources/service-manual.1/

Hi Maziro, can i ask you a question? When you had problems with the water pump, did you find oil on the ground?

 

[maziro]

Hi Maziro, can i ask you a question? When you had problems with the water pump, did you find oil on the ground?

Yes, I could find a few amount of oil like attached also on the ground.