Question about 1991 kawasaki Zephyr 750

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A noise somewhere between a rattle and a knocking sound.goes away when revs above about 1200.

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Sounds like you need to adjust the valves and timimg chain.

Posted on Sep 29, 2009

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2 Answers

Engine knocking at low revs gets less when clutch lever is pulled


Sounds like the clutch basket is worn you want to replace it really.

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My 1984 gl1200a goldwing has a rattle in motor when it is accelerated quickly when in nutral and rattles when riding above 3200-3400 rpm changed oil cut filter apart no metal in it sounds like spark k


1. add an octane booster to the fuel or try some high octane fuel (93 or above) and see if it stops rattling. Also make sure that the engine is not being lugged (throttled hard at low engine speeds) while in driving. If the rattling goes away or decreases check the fuel quality or, it probably has some engine issues like carbon build-up in the engine, overheating, or the timing may be off, or the engine is not running on all 4 cylinders.

Aug 06, 2012 | 1984 Honda GL 1200 Aspencade Gold Wing

1 Answer

My 96 chrysler lhs has a knocking/rattleing sound coming from the bottom engine and as you push down on the gas the faster you drive the louder it rattles


if the noise is coming from the bottom end of the motor then you have either bad connecting rod bearings or bad crank bearings.if when you snap the throttle you hear a double knock then its connecting rod bearing if not then its crank bearing.a collapsed piston can sound low in the engine and its usually a dull knock noise.if you have the engine running and the noise is there and you pull off one plug wire at a time(and reconnect it after checking) and the noise goes away or mostly goes away with the wire unhooked then the cylinder that the noise changed is the cylinder that has a bad piston.

May 25, 2011 | Chrysler LHS Cars & Trucks

1 Answer

Hi have a yayaris sounds like timing chain rattle noise goes away above 3000 revs


is oil level ok? and right oil?
If oil is ok check all timing rollers or chain tensioners. its bad if after 3000 is not this nois.

Mar 15, 2011 | 2007 Toyota Yaris

1 Answer

I have an engine knock when the bike idles, this goes away when the clutch is pulled in. It also goes away when the bike ticks over about 900 - 1000 revs?


I have the same thing on my 2002 750 Honda Magna I have 20,000 miles (32,000 kilometers) The motorcycle operates flawlessly except for this noise. What it is, is the wear in the clutch plates allowing them to rattle. When you pull the clutch you have put pressure on these plates and the rattle stops. Also when you increase the revs a little the plates tighten up from centrifugal force. I'm just putting up with it until I have to replace the clutch, after replacement of the worn parts the noise will be gone as well.

Dec 22, 2010 | 1987 Honda CBR 750 Hurricane

1 Answer

Loud clanking noises


It could be a loose heat shield on the exhaust system.They can sometimes come loose and rattle like crazy while idling.

Aug 04, 2009 | 2005 Saturn VUE

1 Answer

Lg 1030hr excessive ping noise


COULD BE ALOT OF THINGS BUT MY FIRST GUESS IS THE FAN SCREWS THAT HOLD THE FAN MOTOR COULD BE LOOSE CAUSING IT TO RATTLE ON START UP OR SHUT DOWN BUT REALLY NOT MAKING TO MUCH NOISE AS THE UNIT IS RUNNING. CAN YOU DESCRIBE THE NOISE BETTER? IS IT SCRAPPING LIKE A SCRUB OR KNOCKING LIKE HIT HIT HIT HIT?

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