Question about Honda Xr 250 Motorcycles

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It's a 1986 xr 250. Found 2 bent intake valves. Replaced valves,timing chain, Rings, Its getting spark, over 150lbs of compression, but won't start. Have tried pull starting, kicking. doesn't even try to start.

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Im not being a smart ==== but do you have fire and fuel sounds like its in time or you would not have compression

Posted on Feb 11, 2010

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Posted on Jan 02, 2017

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I have klr 250 timing issue, what can I do?


Hi Dave:
I just bought my first KLR yesterday and a service manual came with it.
Check the milage on yours??????
Really ony 2,200? That's barely broken in and amazing for a '94.
The hiss from the airbox would indicate a bad intake valve or at least that I would be checking compression to start trying to figure it out.

Sep 05, 2015 | kawasaki KLR 250 Motorcycles

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2001 a4 FSI compression problem?


When the timing chain gets old, it will slip a tooth or two rather than break. When it slips, theengine msy or may not start, but the compression will be reduced. You usually have to remove the timing cover to verify the cain or belt has slipped, unless you have overhead cam. It that case, you only have to remove the valve cover to confirm valve timing.

Sep 11, 2017 | Cars & Trucks

2 Answers

Timing chains and actuator replaced, now i have a code PO2279


P2279 is the code for Air Intake System Leak. Smoke checks are ok, but hard to see in places like the underside of the intake manifold. SInce your compression is good and even, chances are that the problem is at the intake manifold gasket.

Sep 21, 2014 | Cars & Trucks

1 Answer

2004 Kawasaki KX 250 F no compression


Hi, Anonymous and the usual suspects are:
1. Broken or hole burnt through piston due to spark plug heat range to high or pre-ignition due to the ignition timing too far advanced overheated engine caused by a burnt valve or carbon/metal particle embedded in the cylinder head glowing hot causing abnormal combustion timing.
2. Any bent or broken valve head caused by improper adjustment or sticking/seizing in the valve guide.
3. Broken connecting rod due to bottom end failure.
4. Incorrect cam timing due to either installation error or cam chain malfunction or drive gear failure.
5. Spark plug blew out of head due to improper torque or failed threads.
6. Failed compression release valve or blown out like the spark plug scenario.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
no compression cant kick start my 2004 kx250f only push start it
no start no compression
http://www.mxguy.com/downloads/service_manuals/2004_KX250F_Service-Manual.pdf
OEM Parts for Kawasaki
2004 Kawasaki KX250F Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Jan 13, 2013 | 2004 kawasaki KX 250 F

1 Answer

2002 Honda XR 200 what causes no compression


Hi, Johnadams716 and the usual suspects are:
1. Improper valve adjustment.
2. Broken or loose cam chain.
3. Loose or broken cam sprocket.
4. Bent, burnt or stuck valve.
5. Blown head gasket.
6. Piston failure.
7. Broken connecting rod.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://thumpertalk.com/forums/topic/652899-xr200-why-no-compression-pics
90 HONDA XR200R BARN FIND NO COMPRESSION 003
XR200R service manual repair 1986 1999 XR200 Download Manuals Technical $15
https://www.partsfish.com/page/oem-parts-for-honda
http://mybikemanuals.com/honda/honda-xr-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


Jun 01, 2012 | 2002 Honda XR 200

1 Answer

1985 XR 200 ALL TIMING MARKS SEEM TO BE RIGHT, HAS FUEL ,HAS SPARK .BUT WILL NOT START


By "all timing marks seem to be right", are you talking about the timing marks on the alternator rotor or the camshaft timing marks? A 1985 model is a pretty old bike. If it has never had a timing chain or the adjuster guides replaced, you may need to address this issue. Not only do you need for the ignition timing to be correct, you need the camshaft timing to be correct as well.

In your problem line, you stated that you had fuel, and spark. You need three things to get any engine to run, fuel, spark, and compression. Do a compression check on the engine. If the compression is low, it won't start either. Three things can cause low compression. Bad rings, improper camshaft timing, and valves not seating properly.

If you want to get the bike running again, I would suggest you do a "top end job" on the engine. Pull the head and cylinder. Measure the cylinder for wear and bore for a new piston if necessary. Replace the rings. Have a valve job done on the head at a local machine shop. When you put it back together, do so using a new timing chain and adjuster slides. You'll be surprised at what a "New" engine feels like. Good Luck!

Jan 31, 2010 | Honda XR 200 Motorcycles

2 Answers

97 XR 250. AFTER RUNNING FOR A LITTLE TIME THE CRANKCASE OVERFLOW STARTS FLOWING(OIL). IF IT WERE RINGS WOULDNT IT START LEAKING IN THE BEGINING AS WELL.


No, because it may take some time for the oil to heat up and expand. Then, once this happens, the oil can begin to get whipped up by coming in contact with moving engine and transmission parts. Oil foaming can occur and over-run the crankcase ventilation system.

To help eliminate this problem, be sure to use the correct oil as recommended in the Honda owner's manual. Do not overfill the crankcase with oil. Change the oil and filter more frequently - especially after riding through deep water crossings.

If you suspect worn piston rings, check the spark plug for oil contamination and perform a cylinder compression and leak-down check.

Oct 28, 2009 | 1997 Honda XR 250 R

1 Answer

How do u remove timing chain and re-time engine (1984 xr 250 r)


If you need to remove the cylinder head, here's how. To remove the cam chain, you've got to also remove the left crankcase cover and flywheel.

First, you need to turn the engine over until the piston is at top dead center (TDC) of the compression stroke. Begin by removing the two round covers from the left side of the crankcase cover. Also remove the four tappet hole covers from the cylinder head cover. Turn the engine (in the normal direction of rotation) and watch the intake valves open - and close, then see that the exhaust valves open, then close. Now align the 'T' on the flywheel with the notch in the inspection hole. With all of the valves closed, the engine is at TDC of the compression stroke. Do not begin removal of the cylinder head cover until this is done - to avoid damage to the cover.

With the cylinder head cover removed, you will find two bolts attaching the cam chain sprocket to the camshaft. Turn the engine until you can get a 10mm socet onto the heads of the bolts and remove them. The sprocket will come loose and slide down onto the camshaft, enabling you to remove it an the camshaft.

Upon reassembly, set the cam timing by first setting the engine at TDC. Then, align the two marks on the cam sprocket with the gasket surface on the cylinder head. With the engine at TDC and the marks lined up, the cam timing is properly set.

Before calling the job done, make sure to adjust the tappet clearances to .002" on the intake and .003" on the exhaust valves.

Oct 24, 2009 | 1985 Honda XR 250 R

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