Weird noise

[Big D Florida]

He will look pretty funny pushing it back to Naples......

 

[BWG56]

View attachment 43417

He might wanna put laces in his jiffy slippers or what ever he calls them things if he's gonna run that.

 

[SMCT]

He would need an ample supply of cigarettes to smoke on his journey back.

 

[BadDawg Bill]

A "little noise"? How in the hell can ya tell when your bike backfires every 5 seconds? When we rode to Daytona for the river Grill meetup in October I never had to look in my mirrors to see where he was. The backfiring let me know...

 

[TapioK]

A "little noise"? How in the hell can ya tell when your bike backfires every 5 seconds? When we rode to Daytona for the river Grill meetup in October I never had to look in my mirrors to see where he was. The backfiring let me know...

OK! I install those Thunderfuck bafflers! Or whatever they are.

 

[TapioK]

So the heads, cylinders and pistons are off... all look good to my eye, except rear intake valve. No idea what started the chain reaction, obviously breathing oil to carb made the carbon built excessive, but what started it is still a mystery, we'll see if the culprit can be found. How the pressure was still 190 is a mystery to me.

 

[TapioK]

On the exhaust side the is a bit of white, so It has been running a touch lean I suppose, spark plugs look good though.
To be continued...

 

[BadDawg Bill]

On the exhaust side the is a bit of white, so It has been running a touch lean I suppose, spark plugs look good though.
To be continued...

As my grandpa would say and you.... "Dos not Goot".....

 

[TapioK]

Checked the jets, since Bill is complaining about my backfire, and there was a touch of white residue on exhaust valve . 74 and 40, didn't expect those create lean mixture

 

[BWG56]

Checked the jets, since Bill is complaining about my backfire, and there was a touch of white residue on exhaust valve . 74 and 40, didn't expect those create lean mixture

40 inter? holy moly

 

[Big D Florida]

Checked the jets, since Bill is complaining about my backfire, and there was a touch of white residue on exhaust valve . 74 and 40, didn't expect those create lean mixture

Check seals on intake manifold.

 

[TapioK]

40 inter? holy moly

That is pretty much what I thought. Jet when I was busy and let an indy shop change my oils (old BD Service in Naples) the owner wanted to try my bike, he came back and said seldom he sees carb so spot on... figure that.

 

[TapioK]

Teach me, what should that big inter jet do?
I have never touched jets, have had no reason.!! Great throttle response, no flat spots... bit much backfire, that has made me think lean... plugs look good...

 

[Big D Florida]

Teach me, what should that big inter jet do?

Richen idle and low end.

 

[Spikes05]

Teach me, what should that big inter jet do?

The intermediate jet runs fuel from idle to just over 2,000 rpm's


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[Spikes05]

Then the main jet should kick in on the way to 3,000 rpm depending on the size of your air bleed.


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[Big D Florida]

Teach me, what should that big inter jet do?

Some folks run a bit rich during break-in period, then change..
Perhaps they never leaned it back out.

 

[TapioK]

Richen idle and low end.

Bike idles great, starts in idle just touching the button.. what harm does it do? Nothing? Mileage is good, I've done 160 miles on tank, didn't run out...

 

[Big D Florida]

Bike idles great, starts in idle just touching the button.. what harm does it do? Nothing? Mileage is good, I've done 160 miles on tank, didn't run out...

As long as it doesn't sputter on the low end, or foul plugs.. Rich inter is not going to harm anything.

 

[Big D Florida]

Have you noticed any black smoke at idle?
Are your pipes sooted?