Help!

[Dmitry]

Hi there! What happens at the 9 and 31 seconds. How to fix?
Мой Ñ,,ильм
And another question. What to do with the pipes? How to fix?

[DarkMonster620]

First video, what happened? Did not hear anything weird . .

Regarding exhaust, you might want to get clamps to clamp where exhaust meets main pipes and check that all washers and rubber dampers are OK

[Howie]

First video, what happened? Did not hear anything weird . .

Same here.

Regarding exhaust, you might want to get clamps to clamp where exhaust meets main pipes and check that all washers and rubber dampers are OK

Early Monsters did not have clamps.  They will move.  I see no signs of leaking.  Stop wiggling them and all will be fine.

[DarkMonster620]

Howie . . .

Thanks for input; I did know that(no clamps), but, YES STOP WIGGLING THEM!!!

[Dmitry]

How so? It looks like a disrepair. Can put the clamps? Or so it is conceived in the factory.
About the first video: 9 and 31 second breaks a candle ignition. I replaced their. Did not help. Listen carefully 9 and 31 seconds

[koko64]

So an ignition miss? I didn't notice on the video.

A good tune and service, setting the carburettor synchronization, setting the idle mixtures, a clean air filter and good plugs and ignition leads all help to reduce missing. Another thing, old oem coils on the carburettor bikes can be replaced with Exactfit coils from our sponsors for cleaner running.

Tell us about the bike.

[brad black]

sounds like it's dropping a cylinder to me.  my 750 used to do that, after i replaced all the hard stuff it turned out to a a coil (dyna green).  just go through it all.

[Howie]

How so? It looks like a disrepair. Can put the clamps? Or so it is conceived in the factory.
About the first video: 9 and 31 second breaks a candle ignition. I replaced their. Did not help. Listen carefully 9 and 31 seconds

The part of the exhaust the muffler goes into is double walled, think of a big O with a slightly smaller O inside.  This creates the seal.  The muffler is held in place by the foot peg bracket.  Worked fine on my bike for 13 years and 73K miles.  Some movement is needed to avoid metal failure.

Brad Black's ears are better than mine.  Follow Koko's advice.  4-6% CO at idle.  I don't know about where you live, but  here in the US the bikes were set lean to meet US emissions and wher prone to lean misfire.  And, yep, you may have weak coils.  They can be stress tested with an oscilloscope.  New, they should be able to provide 19K+ volts.

[Dmitry]

The part of the exhaust the muffler goes into is double walled, think of a big O with a slightly smaller O inside.  This creates the seal.  The muffler is held in place by the foot peg bracket.  Worked fine on my bike for 13 years and 73K miles.  Some movement is needed to avoid metal failure.

Brad Black's ears are better than mine.  Follow Koko's advice.  4-6% CO at idle.  I don't know about where you live, but  here in the US the bikes were set lean to meet US emissions and wher prone to lean misfire.  And, yep, you may have weak coils.  They can be stress tested with an oscilloscope.  New, they should be able to provide 19K+ volts.

Thank you. I'll check the coil.
Then on my video is nothing wrong with the pipes? Do not touch anything?

[Dmitry]

The pipes sometimes issued strange sound. I think air leak from the connection with muffler

[Dmitry]

I checked the spark. I think that it is weak. What do you think? Or is it normal? On my motorcycles spark has always been stronger.
Spark

[koko64]

A blue/white spark is good, but if you have old plug leads or old coils you will get an improvement in running with quality replacements. I am using my phone so I cannot trust the picture.
Give the carburettors a good tune and consider fresh ignition components if they are old.
Follow Howie and Brad's advice and systematically check each aspect of ignition and carburettor function.

[Dmitry]

A blue/white spark is good, but if you have old plug leads or old coils you will get an improvement in running with quality replacements. I am using my phone so I cannot trust the picture.
Give the carburettors a good tune and consider fresh ignition components if they are old.
Follow Howie and Brad's advice and systematically check each aspect of ignition and carburettor function.

Thank you! I will try all your methods to solve my problem.
I have another question: I bought plugs NGK DPR8EA-9 with spark gap = 0,9 mm, but in manual - plugs Champion RA6CH with spark plug = 0,6 mm. I reduced spark gap from 0,9 mm to 0,6 mm. I did the right thing?

[koko64]

If your coils are weak then you did the right thing. With high voltage performance coils and plug leads/wires you can run the .9 gap, especially with iridium plugs.  0.6 was the standard Champion gap but it may be the NGK plugs have a standard 0.9 gap for that plug as revised oem replacement iirc. I think Brad has pointed this out. He or others will confirm if this is so.  The later model coils have a better reputation than the old coils on the carburettor bikes.
Brad Black and Howie know more details.

Are your coils original parts or replaced with Dyna or Exactfit parts?

[Dmitry]

If your coils are weak then you did the right thing. With high voltage performance coils and plug leads/wires you can run the .9 gap, especially with iridium plugs.

But still a gap of 0.9 mm is false? Can reduce the capacity of motocycle from 0.6 mm? And become higher with 0.9 mm and high voltage performance coils? i am interesting.

My coils - original.

The main question: will the worst motorcycle to ride with a gap of 0.6 mm instead of 0.9 mm? I care about it. I will replace coils later.