The bike mumbles

pierodn · Jun 14, 2015

I told you in another topic that I had done to my black Fastback the full of diesel instead of gasoline!.
I cleaned the tank and the carburettors and the bike began to go very well, but has a little noice that I don't think depends on "diesel".
The bike, at a minimum, under 2500 rpm, and in deceleration (also when changing gear), mumbles from the left muffler.
No missfire, neither shoots, but mumbles, as a vehemently disturbance of warm wather.
What should I check?
Maybe not carbs are equal?.
Thank you.
Piero

1up3down · Jun 14, 2015

try new plugs?

pierodn · Jun 14, 2015

Hi.
Do you think the diesel broke the plug?
I dont think but i will try to change the plugs.
Ciao
Piero

jaydee75 · Jun 14, 2015

Can you tell what it's saying?

Matt Spencer · Jun 14, 2015

Its supposed to TWITTER .

:mrgreen:

DogT · Jun 14, 2015

I filled a lawnmower with diesel one time. Of course it wouldn't start, but when I got it cleaned out it ran fine, I think actually better. I did clean the plug. Maybe it's mumbling 'I love you"? In Italian of course.

CanukNortonNut · Jun 14, 2015

yea somewhere it was lost in the google translate. :mrgreen: I love you but you have to treat me right....if you don't I will leave you kicking all day and you will drag me or push me home.
CNN

Rohan · Jun 14, 2015

Are your mufflers both the same - inside - when you look down them. ?

As mentioned, peashooter mufflers do 'twitter' on the overrun.
Folks not familiar with this will always comment when they ride anything that does this.
Canary yellow Commandos had 'tweety bird' mufflers in some folks words.

If its only doing it one side though, maybe the translation is being lost somewhere.
Have you checked that your carbs are synchronised, and both working exactly together to pull equally ?
hth.

Matt Spencer · Jun 14, 2015

The Diesel got into the glasspack on the L.H. muffler & made it soggy .

Used to fill exhausts with used engine oil in storage .
on the V4 Mk 1 Cortina dual exhaust - two 2 Litre ohc Cortina systems ,
four corners from home at the beginning of the Memorial Drive the Heat
got right and we layed a Smoke Screne the hight of the norfolk pines and
filled between for the lenght of the Memorial . Nurotic well to do's would
no doubt be horrified , but as Devonports a Naval Town , the dearly departed
would no doubt be stirred by the fitting tribute .

SO , you need to FILL Both Mufflers with Diesel , Just make sure that when they
start smokeing , you KEEP MOVING . That way you wont get a conflgeration or suffocate .

Then BOTH mufflers will Mutter Twitter Howl & Sing , in unison . Dont forget to video it . please .

pierodn · Jun 15, 2015

Hi Jaydee and CNN,
The water when boils MUMBLES, in italian language BORBOTTA.
Have you ever seen a video of volcanic lava that creates hot bubbles that burst when bang one after the other?
My left exhaust does so and I thought the word to explain it was MUMBLES/GRUMBLE.
I know, i write a bad English (i dont use any google translator), but you do like the old professors, and devoid of any imagination!
It will probably be a shortage of sunlight!
Thank you anyway.
Ciao
Piero

pierodn · Jun 15, 2015

Rohan said:
Are your mufflers both the same - inside - when you look down them. ?

As mentioned, peashooter mufflers do 'twitter' on the overrun.
Folks not familiar with this will always comment when they ride anything that does this.
Canary yellow Commandos had 'tweety bird' mufflers in some folks words.

If its only doing it one side though, maybe the translation is being lost somewhere.
Have you checked that your carbs are synchronised, and both working exactly together to pull equally ?
hth.

Hi Rohan,
You can see the left muffler, same on right.
A continuous blast of hot magma bubbles!
Thank you.
Piero

Rohan · Jun 15, 2015

Do the mufflers still sound different left to right, Piero. ?
Still not quite sure precisely what you are saying....
Is one pipe more rorty than the other.

I had a BM that had tweety mufflers on it - they don't have to be peashooter type.
The Dealer was fascinated, and asked how I had done it.

Anonymous · Jun 15, 2015

Hi Piero.
Could it be the muffler is clogged with diesel and needs to be ridden long and fast to evaporate it?
Ta.
As a second language your english is very good. The joke they make is 'mumbles' is similar to 'murmurs' and murmuring 'sweet nothings' is the language of lovers. Your bike murmurs to you (as mine does to me).

Rohan · Jun 15, 2015

Could the diesel have blocked up something, or broken something loose so that it has blocked up.
Maybe just coincidentally..

Deets55 · Jun 15, 2015

I had to E-bay a set of mufflers for my Gold Wing a while back. They came filled with oil, I guess to protect the insides. They smoked like crazy on start up and then tweeted at idle. Eventually they quieted down to normal. The trouble is it took over 500 highway miles for that to happen, just driving around locally would not clear them up. Good luck with your mumbling Piero and thanks for sharing your travel pictures.

Pete

pierodn · Jun 15, 2015

Rohan said:
Could the diesel have blocked up something, or broken something loose so that it has blocked up.
Maybe just coincidentally..

Hi.
The bike starts and ride very well.
The left muffler mumbles (like a crackling but without shots) from 0 to 2000 rpm and when you close the trhottle.
Ciao
Piero

Biscuit · Jun 15, 2015

As you stand next to the bike an slowly open the throttle up to 2000RPM is where you get the mumble from the left? When you let the throttle close this where it will crackle or mumble again?

If so I would richen the pilot air mixture just a bit on the left side to see if it stopped. Of course make note of where you start from initially.

o0norton0o · Jun 15, 2015

pierodn said:
and in deceleration (also when changing gear), mumbles from the left muffler.

Air leak in the exhaust. when you decelerate it goes, "pop, pop, pop," and if you hit the throttle it stops.... Right?

I bet your exhaust washers need replacing on the side that is mumbling OR, you need to tighten the exhaust nut to close the air leak.

Hobot · Jun 15, 2015

Diesel in our gas would not hurt anything as either does not run or just smokes til cleared out of the system once diluted enough to run. Sounds like something got rusted loose in the muffler to cause some narrow restriction that may twitter/rumble on low exhaust flows. Remove the muffler to insepect, knock out crust and listen w/o it to isolate the source.

A friend and I climbed/crawled/hopped/walked/stumbled over Big Island Hawawii semi-cooled lava flow to the ocean cliff drop into the water watching-hearing it crackle as it moved and steam exlode floating on surface till cooled enought to sink. Then a cinder cone began errupting in front of us between the water so backed up some, finised off a beer bottle and tossed it in the fire then worked our way back in the dark to hwy. Next day helicopper tour took us over the area to see most a football field size hunk where we were had collapsed. We recognized the area by the sign that said STOP a dozen died by cliff collapse here. Rest assured motorcycling is way more risky than lave fields or tour with acrbotic crop dusting heli pilot showing off.

pierodn · Jun 15, 2015

o0norton0o said:
pierodn said:

Air leak in the exhaust. when you decelerate it goes, "pop, pop, pop," and if you hit the throttle it stops.... Right?

I bet your exhaust washers need replacing on the side that is mumbling OR, you need to tighten the exhaust nut to close the air leak.

Click to expand...

YES,

POP POP POP POP, when i decelerate, and stop if i hit the throttle.

But i don't think it is an air leak from exhaust system; it is very very thight.

Thank you

Piero

The bike mumbles

pierodn

1up3down

pierodn

jaydee75

Matt Spencer

DogT

CanukNortonNut

Rohan

Matt Spencer

pierodn

pierodn

Rohan

Anonymous

Guest

Rohan

Deets55

pierodn

Biscuit

o0norton0o

Hobot

pierodn

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