Question about 1994 Honda CBR 600 F(2)R

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Knocking or clicking in the top end of my 1994 cbr 600

I let the engine warm up and right before i took the choke off a rythematic click or knock started in the top end on the right side. It sounds like its coming from cylinder 4 but i dont know.

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You could have a loose valve that will cause it too click like that..

Posted on Dec 05, 2008

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I have a 1994 Yamaha FZR 600 and it knocks when it's started up. Then when it's put n gear it cuts off what could that be?

Hi, Deandre the knock could be piston slap, lower rod bearing or bushing not the most popular of could be's but are generally at the top of the usual suspect list as far as stalling when put into first gear that could be something as simple as a faulty side stand switch feeling better? for this scenario, you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Help knocking engine sound The FZR Forum
Yamaha FZR600R Service Manual
OEM parts for Yamaha

Jul 15, 2016 | Yamaha Motorcycles

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Rattling/knocking noise under low acceleration?

Afraid that sounds like the ends are gone, the best way to tell is to get a compression test done on it, but you can usually work it out for yourself.
The engine is under most strain when the power demand is highest for example when accelerating uphill from a slow rolling speed. you will also get the knocking on the overrun, i.e when you have been running at a higher speed and you shut the throttle. When maintaining the same speed does the knocking get more or less? if its less then its almost certain the ends have gone
If as I think it is the ends (usually the big ends rather than the little ends) I afraid its probably terminal. the cost of repair would be too high.
Be careful when riding as the probable result of worn end shells is a con rod through the side of the block and at speed that could be seriously dangerous

Jan 23, 2014 | Suzuki Motorcycles

1 Answer

When trying to start from cold my gpz 600 will only run at 5000 rpm trying to feather the choke engine will only stall have replaced carb rubbers and cdi unit no difference cleaned carbs in ultrasonic bath...

Make sure that the jets are removed when cleaning and visually inspect them before assembly. Idle jets have very small holes and are hard to clean. Might have to use a single nylon bristle to knock out any crud stuck inside. You can also use carb cleaners in the fuel to try and clean out deposits. They are not a one shot clean, it takes a few tanks to get results.

Jan 03, 2014 | Motorcycles

2 Answers

My 2001 honda cbr600 went into the garage last week as it kept stalling the mechanic said it was the valves and charged me 600 pound for the trouble of changinf them i was reassured it would be fine two...

Maybe, (getting ripped off), try gettting a second opinion. If the engine is not smoking or knocking real loud, it is probably something else causing the stalling issue.

Nov 17, 2010 | 2001 Honda CBR 600 F(4)i Rossi

1 Answer


First of all , change your oil pressure sender . It should be easy to do and relatively inexpensive. See if that fixes the oil light going on and off. If the light stays on after that , turn off the bike and replace the oil pump. If you have a bad oil pump and continued to drive the bike , you may have caused serious damage to the motor and may end up having to disassemble the engine to determine the cause of the knock.

Oct 12, 2010 | 2001 Honda CBR 929 RR Fireblade

1 Answer

My cbr 600 f2 1993 had been sitting for a long time

Sounds like the carbs were not properly cleaned or set up. Choke should cause the cold start rpms to be higher than what you are experiencing. Application of choke to a warmed up engine will usually cause the engine to stall.

Jun 28, 2010 | 1994 Honda CBR 600 F(2)R

2 Answers

My 1994 xr6004 has good compression and has had a new top end, it runs awesome and kicks over fairly easy when cold and runs/drives great, but as soon as it warms up and you shut it off or it stalls out,...

The fuel in the carburetor float chambers is boiling while it sits, and flooding the engine. If it has a fuel petcock turn that off, and let the bike stop through fuel starvation. Then there will be no fuel in there to boil.

Jun 15, 2010 | 1994 Honda XR 600 R

2 Answers

91 FZR 600 Transmission knock!

the knocking could be the universal joint bearings calapsing in the drive shaft

Jun 08, 2010 | 1991 Yamaha FZR 600

1 Answer

Gsxr 600 1999 rough idle white smoke underpowered knocking pinki

I,d probably do a compression check on this old girl. sounds like she needs some attention to the top end.The valve stem seals sound like there spent.Oil is seeping past the seals into the combustion chamber and being burnt off,thus explaining the rough idle and white smoke at start-up and dissipating as the engine warms up.Probably time to spend a bit of coin keerossi.Think of it as an exchange, money for thrills.hope i've helped you out a bit....tabby...OZ

Nov 21, 2009 | 1999 Suzuki GSX-R 600

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