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Strange engine sound

Tech section strictly for the FJR. Everything from oil changes & suspension setup's to removing sheep hair from hard to reach places on the bike so that your wife never finds out.
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Re: Strange engine sound

Post by Festus »

If he only cared about the bike as much as he cared about those darn kids :mrgreen:

"Sorry I'm late team, but I had to work on my motorcycle tonight. Give me 10 laps and call it a day" :lol:
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Re: Strange engine sound

Post by Cav47 »

I will make some progress for sure this weekend. You all are correct, it prob is way less than I am making it out to be.
I often have found myself when I was not looking, nor did that discovery take place where I thought it would!

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Re: Strange engine sound

Post by Cav47 »

Festus wrote: Fri Aug 20, 2021 11:59 am If he only cared about the bike as much as he cared about those darn kids :mrgreen:

"Sorry I'm late team, but I had to work on my motorcycle tonight. Give me 10 laps and call it a day" :lol:
Corporal punishment is not allowed, some of us are too old to know that physical correction is a R.G.E. (Resume Generating Event........ cause you gotta go get another job)


But some of us know that is EXACTLY what these little poop heads need.
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Re: Strange engine sound

Post by Hppants »

Gotta agree with Ray - must start to finish. It can't eat you.
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Re: Strange engine sound

Post by Cav47 »

The nipples are way more important than one might have thought.

While I am not usually one to have this problem, but attention to the nipples by many lesser men has often led to problems getting her motor running right.


I am off to the auto parts store to rectify the situation.

Anyone notice something missing?



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Headed to the auto store to rule this out.

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I often have found myself when I was not looking, nor did that discovery take place where I thought it would!

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Re: Strange engine sound

Post by extrememarine »

Yahtzee!

open pair ports broadcasting internal engine sounds to the outside. See, that wasn't so hard, was it... :)
Cav47 wrote: Sun Aug 22, 2021 6:54 pm The nipples are way more important than one might have thought.

While I am not usually one to have this problem, but attention to the nipples by many lesser men has often led to problems getting her motor running right.


I am off to the auto parts store to rectify the situation.

Anyone notice something missing?



Image


Headed to the auto store to rule this out.

Sent from my iPhone using Tapatalk
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Re: Strange engine sound

Post by FJRoss »

Did you run it like that to see if that was the origin?
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Re: Strange engine sound

Post by Cav47 »

Waiting in the line at AutoZone. Buying plugs/covers/nipples, hose or whatever they have.

We shall see what they have here. If not, I will go over to the Rural King here.
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Re: Strange engine sound

Post by Festus »

You saw the dry rotted one, right?
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Re: Strange engine sound

Post by raYzerman »

I hope he's getting a pack of 8... one set for the next time.
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Re: Strange engine sound

Post by Cav47 »

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Yes, I saw the dry rotted ones and got them taken care of. Auto Zone did not have more than 2 sets. Fired it up and 100% fixed. Will ride it tomorrow to school just because I can.

Went for a ride tonight just to test everything out. $10.88 for that fix.

All of you were right in saying it could not be something catastrophic given the dead nuts reliably of these engines.

Overall, when I recall back to when we removed the pair system at tech day in Owasso 2 years ago, we had to cut some corners. The local places did not have the proper covers that we looked for. We went with the pictured caps and they had to be heated and stretched to fit. They were all that was available. Ray and Billy prob told me to replace them with something more robust, but obviously I forgot and didn’t.

Thanks again for everyone’s help and as a public derived announcement, next time you have a look under the tank, check your nipples for dry rot.
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Re: Strange engine sound

Post by extrememarine »

"Check your nipples"

Solid advice right there...
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Re: Strange engine sound

Post by BkerChuck »

Perhaps some nipple clamps might be in order..... :lol:
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Re: Strange engine sound

Post by Abercrombie FJR »

BkerChuck wrote: Mon Aug 23, 2021 8:17 am Perhaps some nipple clamps might be in order..... :lol:
Ouch! Remind me not to share a room with you at any FJR events. I'm not into that kind of stuff.
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Re: Strange engine sound

Post by raYzerman »

As others have found, nipples are not made all the same and can deteriorate after a couple of years... Better if you can get silicone nipples...
https://www.stockcap.com/silicone-caps.html

The proper fix for this is PAIR block-off plates, best done at valve check time. WynPro hasn't made any for a while, but you can get others....... the downside is no rubbers and no nipples.

Driven Racing makes a set.... shop around ebay or Revzilla ~$48

Note for the 2016-up guys, you cannot remove the solenoid without throwing an error code..... must leave solenoid connected (or find a suitable resistor?).
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Re: Strange engine sound

Post by Cav47 »

I knew this finding would result and degrade into childish, juvenile, immature discussion...... and I am okay with that.

I rode the FJR to school today. It ran as normal. I am thankful and relieved this is all it was. I really did not want to trailer to a tech day or ask a dealer to try and fix. The worst part was trying to rationalize a reason the wife would accept as to the reason I needed a new FJR.

I guess no one should be surprised that there was some "sub standard" nipples in Owosso.

I may be looking for a mechanical fastener of some type to cinch down the caps.

Do you find it odd that the two middle caps blew off?- More pressure in those as opposed to the outer ones? Maybe an accelerated deterioration since the heat build up could be more in the middle of the engine.
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Re: Strange engine sound

Post by raYzerman »

They just got old and loose.... the airflow is normally drawn into the ports naturally by exhaust flowing out the exhaust ports, and there are reed valves to prevent backflow... should not have "blown" off, but who knows a pulse from a reed valve... they were too loose, fell off with the slightest of ease.

Sux to be you to miss this Owosso Tech Day........



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Re: Strange engine sound

Post by rbentnail »

"check your nipples..."

Darn good advice! This should include the TBS ports too.
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Re: Strange engine sound

Post by bigjohnsd »

Doesn't that school of yours have a Metal Shop?

Have the little darlings make you a set of block off plates.
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Re: Strange engine sound

Post by Hppants »

So what can we learn from all of this?

(my opinion)

1. Removing the PAIR is pointless and potentially detrimental. "Cleaning the area up" under that gas tank is useless - the roaches don't care what it looks like.

2. A pair of hard and rotten nipples can give even the best of men a good bit of grief.

That is all....
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