Question about kawasaki KX 250 F Motorcycles

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My valve clearences are wrong and my bike has no compresion

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8thou inlet and 12thou exhaust, at TDC.

Posted on Dec 29, 2010


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Bike runs but when gets warm shuts down will start in about 15 mins when cools

Valve clearence is to tight, compression then becomes zero when hot and when cooled down again compression is back. Adjust clearence maybe 0.05 mm more up, but check all valves an all cylinders.
You could have a burnt seat too.

Aug 05, 2014 | 1984 Suzuki Gs 550 L

1 Answer

How do I adjust ZZR1400 valve clearence

The valve lash adjustments on these bikes are done with shims on a COLD engine.
Intake valves 0.15-0.20
Exhaust valves 0.22-.0.27
Check the specs on your emissions sticker to confirm...California bikes are subject to change.
If you are not familiar with timing marks and adjustment procedures, i recommend you buy the manual and follow the steps outlined, the illustrations are also a big help.
Good luck, i hope this helps.

Jul 17, 2011 | 2008 kawasaki ZZR1400

1 Answer

It will only start by pulling behind a vehicle when its cold. Wat could be the problem I'm thinkn it needs a valve adjustment

hi, coud well be a compresion problem, when the bike is started will it tick over or does it just peter away and stop if you remove your hand from the throttle? recheck the valve clearances, have they been adjusted with the engine on he correct stroke? when the cam lobes are facing down the valve clearenes should be set with the engine on tdc, and cold, it is always best to have a slightly larger clearence to alow for expansion , good luck paul

Feb 13, 2011 | 2002 Yamaha YZ 426 F

1 Answer

My kl250 will not start even after valve adjustment

hi, are you saying since you addjusted the valve clearences the bike wont start? re check make sure you had the engine on the correct stroke, remove spark plug, check piston is at tdc, and the cam lobes are facing down, recheck your clearences here, hope this helps/paul

Dec 30, 2010 | 2003 kawasaki KLR 250

1 Answer

Aprilia RSV melle 2002, very bad starting when cold. I have only recently purchased the bike and it is my first V twin, so I am willing to accept that is myself that is doing something wrong or is this a...

has the bike been serviced recently if so were the valve clearenes checked if not when were they last done i take it you have checked the obvious such as plugs and air filter if the plugs and filter are good i would get the valve clearences checked because this can cause poor cold starting and general perfomance hope this helps

Oct 26, 2010 | 2000 Aprilia RSV Mille SP

1 Answer

Going along just died no compresion now when you kick start it

hi you dont say what type of bike if its 4 stroke blown head gasket burnt valve or hole in piston modern fuels cause lots of problems in bikes take out plug and see what it looks like check for tight tappet or valve stuck open

Jun 23, 2010 | Aprilia RXV 5.5 Motorcycles

1 Answer

Valve clearences specs for XT600 1990

Valve Clearance Cold - Inlet : 0.07 -
0.12 mm
Valve Clearance Cold - Exhaust : 0.12 - 0.17mm

This site gives most tech. details required for your bike. Cheers.

Apr 29, 2010 | 1990 Yamaha XT 600 E

3 Answers

What is meant by ' Valve clearence ' ,How to adjust it.

The written explanation by the other two guys should suffice. Below is a diagram to help put an image in your mind. One diagram is worth 997 words.

A “very helpful” rating on this answer? Thanks!

Jul 02, 2009 | 2008 Yamaha Gladiator SS

1 Answer

How do you inspect valve clearence and adjust the valves???

you use a set of feeler guages to measure the gap between the valve and the tappet (the arm that opens the valve) there is a intake and exhaust gap setting. you'll have to do some research to find out what the gap should be for your motor.

Apr 18, 2009 | 2004 Suzuki GZ 250 Marauder

2 Answers

2005 Honda crf450x cold starting

doulbe check the grounds, & you might need to add and extra ground wire to the bike, closer to the starter. This should help. There is a valve that release the compression when you kick it off.You might see if you can pull this release the compression valve while pushing the start button????

Feb 07, 2009 | 2005 Honda CRF 450 X

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