Question about 2002 Honda VT 1100 C2 Shadow Sabre

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I have a problem my bike has a strong upper end knock when it cold when its warm it seems to go away until you go to slow down then it rattles a little at medium rpm.it has hydrolic lifters so im not sure if maybe im losing a lifter

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Could be a lifter bleeding out so check quality of oil

Posted on Jul 26, 2009

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2 Answers

Cold knock then subsides


it is possibly piston slap,which is normal,some car company like GM also use slightly bigger gap between piston and cylinder on (3.1,3.4,3.8 liter engines) to help engine last longer,in return you get some piston slap when ENG cold,if it goes away after it warms up don't worry,it is normal

Nov 12, 2013 | Mitsubishi Galant Cars & Trucks

1 Answer

Cold knock (then Subsides)


sounds like a crushed valve lifter

Nov 12, 2013 | Mitsubishi Galant Cars & Trucks

1 Answer

Sounds like a diesel on a cold day


could be a knock sensor or rockers knocking until oil warms up and oil pressure seals the lifters

Sep 27, 2012 | 1995 Chevrolet Silverado 2500

1 Answer

My Audi A4 2009 makes a rattling noise on cold starts which resolves in less than 30 seconds. Dealer says its an air pump. This doesn't seem correct. The noise comes from the front of the care. Does not...


READ THIS (happy ending so far...):
audi a4 2L turbo quattro, manual transmission with 98,000 KM. Perfect conditions, no oil leaks whatsoever.

Left the car off for two weeks in very cold weather (-10C down to -25C). When I restarted, it started immediately but with heavy rattling noise due to camshaft adjuster not getting enough oil pressure. After 3 minutes of warming up (outside temp.: -12C) at very low rpm (below 2,000rpm), I start moving the car. Still hearing heavy rattle noise. As soon as I pass 2,000 rpm, I get a scary red warning, low oil pressure. Turn off the engine immediately. In 1 minute, I re-start the car and the engine lights check ok, so I drive in first gear super slow (1,200rpm) hearing the same rattling noise. After another minute, finally the noise all the sudden disappears and the car starts running just fine.

Called Audi dealer and they told me that in extreme weather conditions, I should warm the engine for 10-15 minutes if necessary before start moving.
Take away: luckily, I didn't screw up the engine since I was using it at extremely low rpm (easy to do with clutch and manual transmission) until the oil reached full pressure. I am pretty sure now that the problem was leaving the car off for such a long time in freezing weather. All the oil flows back to the bottom, and when I restarted it, the cold oil with high viscosity took a long time to reach all the parts of the engine, specially the camshaft adjusters that are actuated by using oil pressure. Next day, the car started at -9C perfectly without making any noise (as usual). Basically, the longer you leave your audi in cold weather, the longer you might hear the rattling noise until the oil reach full pressure inside the engine. My car took 6 minutes to fix it after couple of weeks in cold weather. This makes sense to me; in fact, in the past I only heard the rattling noise after leaving the car off for a couple of days in the winter.
So far, this has had an happy ending....

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Dec 19, 2010 | 2009 Audi A4

2 Answers

2004 gt650 has a knocking sound from engine at idle.It goes away when reved.Thought it could be the cam chain but its comming from the bottom of the engine.


hi,most bigbore v-twins have a knocking sound coming from the bottom end,it is usually caused by the tolerance in the big end bearings and normal wear and tear,however in saying that,if the noise is a very metallic type knock,get it checked out straight away,it is quite difficult to diagnose a knock without seeing or hearing the bike running,but if in doubt,get it checked over by a reputable motorcycle mechanic,it will be inexpensive to get it checked over and find nothing wrong,but could be very expensive if their is something wrong..cheers 

Dec 30, 2009 | 2005 Hyosung GT 650

4 Answers

MY 2000 Montero Sport has a loud knocking when i Start it UP ESPECIALLY WHEN ITS COLD IT GOES AWAY AFTER IT WARMS UP


Sounds like a hydralic lifter issue. These lifters operate the cylinder valves and run off oil pressure. When the engine is cold and the oil is thick worn lifters tend to rattle. When the engine warms up, everything expands and the lifters stop rattling. There is no easy cure for this except replacing the lifters. Sorry....

Dec 02, 2009 | 2000 Mitsubishi Montero

1 Answer

2001 silverado - My engine knocks for a few


You may have a bad intake manifold gasket, which is leaking the antifreeze in to your engine. Note" Antifreeze is corrosive to the engine bearings" and the knocking your getting from the engine may be worn connecting rod bearing and the pistons are knocking till it warms up and expands to take up the space the worn bearings created. Replace the faulty gasket, change the engine oil and filter as much as possible to till you address the leak and add Restor engine treatment and Lucas oil treatment for now. This may stop or slow the knocking for now, but your going to have to tear the bottom end down and replace the crankshaft and connecting rod bearings if the knock has not gone away. As the weather starts to get colder, your going to have to warm up the engine before you start to drive, getting hard on the engine while it's still cold may cause the bearing to slip and then your looking at a bigger and more expensive job. Good luck and keep me posted.

Oct 28, 2009 | 2001 Chevrolet Silverado

2 Answers

My 2004 honda cbr 1000rr has a loud rattle and i was told i would need new valves. is this an expensive job?


Needing new valves is highly unlikely. Your bike is only 5 years old.
Before doing anything else, run through a tank of premium gas. If the rattle goes away then a bit of pre-ignition was present. If the rattle is still there, take the bike to a dealer and ask them to reset the cam chain tensioner and set the valve clearances also. This may cost $150 or so. Chances are that if the knocking is still present, you are hearing piston slap. This would require new pistons, rings and probably fresh cylinder bores. Have the shop re-seat the valves while the top end is torn down. Ask the dealer as to cost before handing over the bike.

Jul 28, 2009 | 2004 Honda CBR 1000 RR Fireblade

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