Question about 2000 Alfer VR 2000 Supermoto

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Leaking compression on my VR

What do i need to Chick for this problem

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Check the valve clearance to see if one of the valves is tight To figure out whether it's the rings or the valves try this. Lock the crank with a wrench with the piston at TDC (Top-Dead-Center) and run some compressed air in through the spark plug hole. Make sure you have a good hold on the crankshaft wrench or the engine will spin throwing the wrench off ! Now listen. If you hear air coming out at the carb or air cleaner the intake valve is leaking. If at the exhaust pipe, it's the exhaust valve. If at the engine breather, it's the rings. ,,,

Posted on Nov 10, 2008

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Hi,I have an 1981 model,but the bike won't start. there is no engine compression. I have checked it with a pressure gauge. Is there anything I can do? I have checked the valves and that is not the...

How did you check the valves? Something is leaking bad if no compression. Do you have hole in the piston? Or the Rings have failed? If you squirt a good amount of Oil into the cylinder then check compression what happens. if you get a little compression, I'd say the oil is enough to improve compression and you may be right the valves are ok. If again no compression, valves are probably leaking. If you have a head gasket, it may be leaking.
Soap solution at joint of head may reveal leaks.

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You next need to do a leak down test which will answer your question about the low compression.

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run compression and leak down tests. compression test to see if there is a loss, leak down test to find from where it's leaking.

May 13, 2010 | 1996 kawasaki GPZ 1100

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Leaking oil from power valve on 2000 yz 125

It is normal for the powervalves to leak, but it does depend on where it is leaking from.

The hose on the left side is the power valve chamber vent - it is normal for it to leak thick black oil from this hose.

If the leak is on the right side, and the oil is transmission fluid, then the seal on the actuator shaft needs to be replaced.

Excessive oil from the powervalve hose is a possible sign that the compression is low. Low compression equals lower exhaust temperatures and this can lead to incomplete combustion.

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1 Answer

Ive got a hartford 125 vr wont stay running

sounds like you have a leak in the intake between the carb and motor, check the gasket between the carb and motor.


Jul 12, 2009 | 2000 Hartford VR 125H

1 Answer

HI dude! got a problem trying to find out where this bike is made

I do not recommend this bike. Honda, Yamaha, Suzuki are good choices. You can find a dealer all over the world. The bike is junk the first time a part fails if you can't get parts and service. Seen any dealers in your city? The bike is made in Taiwan. Here's the info you asked for, even though I advise against it. Top speed 65 to 70 mph Overall Height1170 mm (46.1 inches) Overall Width880 mm (34.6 inches) Overall length2110 mm (83.1 inches) Seat height810 mm (31.9 inches) Wheelbase1375 mm (54.1 inches) Fuel capacity - reserve12 l (3.2 gallon US) Dry weight126 kg (277.8 pounds) Enduro-Offroad ModelVR 150X ENGINE Type149 cc, air cooled, single cylinder, 4-stroke Standard compression 145 lbs Power13.5 hp (10.1 kW) @ 8300 rpm Bore x stroke (mm)62 mm x 49.5 mm Compression ratio9.6:1 Valves2 valves per cylinder IgnitionCDI Torque12.4 Nm (9.1 ft. lbs) @ 8300 rpm How about a top rating on this answer. Thanks!

May 28, 2009 | 2003 Hartford VR 150X

1 Answer

How to stop clutch oil leaking

It's either a defective gasket (wrong shape or inconsistent thickness at seal surface) or poor installation (installed with a wrinkle overtightened etc.). Clearly it's a problem and not by design. If you're going to design something to leak it's easier to do without a gasket! Tell the Scuderia boys to fix it right. Should be warranty work, I'd think. ,,,

Nov 10, 2008 | 2005 Hartford VR 150Z

1 Answer


Connect your tester to the big thick spark plug lead and crank the engine. You should see a nice big fat blue spark. If you don't disconnect the engine kill button. If there still is no spark you will need to determine if the engine has points or electronic ignition. Most (but not all !) bikes built before 1980 have points ignition. Most bikes built after 1980 (but not all !) have some sort of electronic ignition system. If in doubt pull one of the crank end covers (Usually 2-3 screws) and look ! If you have a battery and coil points system see the points page If you have a points magneto system see the Magneto page. If you have an electronic ignition system see the electronic ignition page. ,,,

Nov 10, 2008 | 2000 Alfer VR 2000 Supermoto

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