Question about 2005 Bajaj Pulsar 180

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When i hold the clutch in my pulsar 180 (2005 model) there is a buzzing noise that comes. But when i release the clutch, the noise goes. Very strange, even my mechanic couldn't figure it out. He w

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  • 11 Answers

I would check for oil pressure your pump could be getting weak

Posted on Jan 24, 2013

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 107 Answers

SOURCE: My pulsar 150CC silencer is partially rusted. It

Some say that "an engine needs backpressure to work correctly." Is this true?
No. It would be more correct to say, "a perfectly stock engine that cannot adjust its fuel delivery needs backpressure to work correctly." This idea is a myth. As with all myths, however, there is a hint of fact with this one. Particularly, some people equate backpressure with torque, and others fear that too little backpressure will lead to valve burning.
The first reason why people say "backpressure is good" is because they believe that increased backpressure by itself will increase torque, particularly with a stock exhaust manifold. Granted, some stock manifolds act somewhat like performance headers at low RPM, but these manifolds will exhibit poor performance at higher RPM. This, however does not automatically lead to the conclusion that backpressure produces more torque. The increase in torque is not due to backpressure, but to the effects of changes in fuel/air mixture, which will be described in more detail below.
The other reason why people say "backpressure is good" is because they hear that cars (or motorcycles) that have had performance exhaust work done to them would then go on to burn exhaust valves. Now, it is true that such valve burning has occurred as a result of the exhaust mods, but it isn't due merely to a lack of backpressure.
The internal combustion engine is a complex, dynamic collection of different systems working together to convert the stored power in gasoline into mechanical energy to push a car down the road. Anytime one of these systems are modified, that mod will also indirectly affect the other systems, as well.
Now, valve burning occurs as a result of a very lean-burning engine. In order to achieve a theoretical optimal combustion, an engine needs 14.7 parts of oxygen by mass to 1 part of gasoline (again, by mass). This is referred to as a stochiometric (chemically correct) mixture, and is commonly referred to as a 14.7:1 mix. If an engine burns with less oxygen present (13:1, 12:1, etc...), it is said to run rich. Conversely, if the engine runs with more oxygen present (16:1, 17:1, etc...), it is said to run lean. Today's engines are designed to run at 14.7:1 for normally cruising, with rich mixtures on acceleration or warm-up, and lean mixtures while decelerating.
Getting back to the discussion, the reason that exhaust valves burn is because the engine is burning lean. Normal engines will tolerate lean burning for a little bit, but not for sustained periods of time. The reason why the engine is burning lean to begin with is that the reduction in backpressure is causing more air to be drawn into the combustion chamber than before. Earlier cars (and motorcycles) with carburetion often could not adjust because of the way that backpressure caused air to flow backwards through the carburetor after the air already got loaded down with fuel, and caused the air to receive a second load of fuel. While a bad design, it was nonetheless used in a lot of vehicles. Once these vehicles received performance mods that reduced backpressure, they no longer had that double-loading effect, and then tended to burn valves because of the resulting over-lean condition. This, incidentally, also provides a basis for the "torque increase" seen if backpressure is maintained. As the fuel/air mixture becomes leaner, the resultant combustion will produce progressively less and less of the force needed to produce torque.

Posted on Sep 16, 2010

SOURCE: my bike has a very low pick up compared to other

With respect to your discription of the problem , it would be worth to check the timing of the bike's engine. It could be ******!
Hope this helps!

Posted on Aug 08, 2009

luckyluke78
  • 333 Answers

SOURCE: my bike has a very low pick up compared to other

service your carb, change the plug and airfilter and check you timing and compression.These are simple things that will improve your performance ...but changing your clutch plates?Is your clutch slipping?

Posted on Aug 08, 2009

co7196
  • 3433 Answers

SOURCE: my pulsar 180 has noise engine . what to do

It could be a simple timing issue or even bad fuel. Check out your fuel.Mix or straight fuel? If mix, chk oil to fuel ratio. If straght gas, up the octane. Good luck, Ned

Posted on Sep 09, 2009

  • 1 Answer

SOURCE: tak tak sound present in engine after fitting the cluctch site

re-arrange the cluth again..i got same problem last year

Posted on Mar 06, 2010

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1 Answer

A very bad sound coming from my pulsar 150cc bike's engine like speedboat or old scooters


Hi, Rahul I would love to help you with your engine or chassis noise but I just loaned my brand new pair of listening ears to your local dealer's chief technician so he could take your bike for a test ride and give you his professional opinion and estimate about your noise and repair cost. If you are a little short on "DRACHMA" and a Dealership is not on your list of fun places to visit then perhaps the list below will help soothe your worried mind so you can make an informed decision.
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10. Solid Lifters---TICK
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For more information about your issue and valuable "FREE" downloads that you need please click on the links below. Good luck and have nice a day.
Bajaj Pulsar 150 cc Engine Noise Review 305958 Complaints Board
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Hi,it sounds from what you are saying that you have got a inturnal falt with the gearbox,im affried the only way to make a propper diagnoses is to take it apart and look at the gear sincros there has to be worn bearings,or teeth on the gears,or the sellector,or something has just manidged to come loose.
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Hi Shekh, loose valve seat? I am sorry you can't find the first and best tool you ever bought for your Bajaj but despair not for a mere $10 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day. http://88.198.249.35/d/Pulsar-150-Workshop-Manual.pdf

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I have pulsar 150 cc bike 2011 model, my bike facing some problems in clutch plate side, there is some hard noise sound coming there, and some smoke coming in under clutch plate side


Hi, Madhupoorni2 I just loaned my brand new pair of listening ears to your local dealers chief technician so he could take your bike for a test ride and give you his professional opinion and estimate about your noise and repair cost. For more information about your issue, please visit the websites below. Good luck and have nice a day.
https://www.tradebit.com/filesharing.php/search/0/bajaj+pulsar+150

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This noise is due to a part called the clutch release bearing being worn out. You must remove the transmission to replace it.

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sounds like its time for a new pressure plate

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this sounds like an adjustment issue. you did not mention the mileage...The clutch is released by a bearing, this release bearing needs to come back off of the fingers of the clutch pressure place, early wear and noise happens.

Near the end of the clutch life, you may find that you cannot release any more, if your model is adjustable.

Start with proper clutch release adjustment.

Doc

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1 Answer

Clutch making strange noise when changing gears


It sounds like your clutch release bearing is worn/noisey causing fault

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