F6B engine knocking noise when braking/pushing on suspension?

[dashiznit1]

https://youtu.be/G265AGIHQa0

Does this sound like a major engine problem or could it potentially just be the brake system or suspension?

[Willl]

To me sounds like something rubbing against plastic, I didn't notice any engine change in the video :confused:

[rdbonds]

dashiznit1 - So it doesn't do that when it's not running?

[dashiznit1]

dashiznit1 - So it doesn't do that when it's not running?


Nope only when it's running.

[Sorcerer]

What trouble shooting ideas did you get from the other internet groups. Did you check the radiator fans as suggested on the other forum’s?

[dashiznit1]

What trouble shooting ideas did you get from the other internet groups. Did you check the radiator fans as suggested on the other forum’s?

I'm not a part of other f6b forums, which forums and threads do you suggest looking at?

[shortleg0521]

Try some of the gold wing forums
Same engine and front end

[SeaSteve]

I would remove all the lower covers and do the same test again.

[billsim]

Sounds like a fan or pulley rubbing on something. Agree that the front cover removal will tell the story. Did not hear engine issues.

[rdbonds]

Are the cooling fans on when this is happening?

There are no exposed pulleys/belts, etc on our bikes. Even the alternator is gear drive.

[F6Bster]

I was wondering about the fans also!


Are the cooling fans on when this is happening?

There are no exposed pulleys/belts, etc on our bikes. Even the alternator is gear drive.

[SeaSteve]

Are the cooling fans on when this is happening?

My fans came on for the first time (that I know of) this weekend in 100 degree stop and go traffic.

[dashiznit1]

Are the cooling fans on when this is happening?

There are no exposed pulleys/belts, etc on our bikes. Even the alternator is gear drive.

No it does it when it's cold too.

[wjduke]

This has to be the strangest thing I’ve seen yet concerning the F6B.

[rdbonds]

Very interesting. As I recall, there are no points on the engine where any rotating assembly extends outside the engine (i.e. no pulleys, harmonic balancers, etc). Just to be sure, I found this ebay listing that has nice photos of a GL1800 engine (which also happens to be from an F6b).

https://www.ebay.com/i/254364995116?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=254364995116&targetid=915708758100&device=c&mktype=pla&googleloc=9010874&poi=&campaignid=10454706659&mkgroupid=100467640461&rlsatarget=pla-915708758100&abcId=2146000&merchantid=134758311&gclid=Cj0KCQjw3ZX4BRDmARIsAFYh7ZJIQTZHTupiCRyFkt0z 3at9mBJJlceGNRnogMqUvyOOPt6mFFFgBysaAvNyEALw_wcB

The engine in these bikes is a stressed member (i.e. the frame bolts to it...it's structural). Has the bike has suffered an impact or wreck?

[dashiznit1]

Very interesting. As I recall, there are no points on the engine where any rotating assembly extends outside the engine (i.e. no pulleys, harmonic balancers, etc). Just to be sure, I found this ebay listing that has nice photos of a GL1800 engine (which also happens to be from an F6b).

https://www.ebay.com/i/254364995116?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=254364995116&targetid=915708758100&device=c&mktype=pla&googleloc=9010874&poi=&campaignid=10454706659&mkgroupid=100467640461&rlsatarget=pla-915708758100&abcId=2146000&merchantid=134758311&gclid=Cj0KCQjw3ZX4BRDmARIsAFYh7ZJIQTZHTupiCRyFkt0z 3at9mBJJlceGNRnogMqUvyOOPt6mFFFgBysaAvNyEALw_wcB

The engine in these bikes is a stressed member (i.e. the frame bolts to it...it's structural). Has the bike has suffered an impact or wreck?

As far as I know and can tell it's never been wrecked. I'm completely stumped.

[3wings]

Just a crazy idea: put the front tire up against a curb or something that won't move and bounce it without touching the brakes.

[rdbonds]

The reason I was asking about wrecks is that with an engine that's a stressed member, it's possible for a wreck to damage an engine mount and chattering noise when the frame/mount flex as you apply force by bouncing it. To be fair, I'm grasping at straws. Based on the video, though, it doesn't SOUND metallic.

I agree with SeaSteve and billsim...probably time to start removing tupperware to see if it goes away or at least to get a better look/listen at it.

[dashiznit1]

Just a crazy idea: put the front tire up against a curb or something that won't move and bounce it without touching the brakes.

Good idea I'll try that

[dashiznit1]

The reason I was asking about wrecks is that with an engine that's a stressed member, it's possible for a wreck to damage an engine mount and chattering noise when the frame/mount flex as you apply force by bouncing it. To be fair, I'm grasping at straws. Based on the video, though, it doesn't SOUND metallic.

I agree with SeaSteve and billsim...probably time to start removing tupperware to see if it goes away or at least to get a better look/listen at it.

Yeah it's definitely strange. I'll see what I can do but I don't really have space to take it apart.