1995 virago 1100 20k miles #1 roll more than 1/4 throttle and she takes off like a hyper charger with nitrous. #2 Right side rear cylinder gets extremely hotafter couple minutes of idle. All other sides and front cylinder stay cool. Both spark plugs are same color...black. All hoses, pipes and lines ok. [email protected] ps just bought and only rode 1/2 mile.

Bad news, I think its a cracked cylinder. Contact local Yamaha dealer for more information. Incidentally, 20,000 miles on a motorcycle engine, if rode hard, can be worn out.

http://www.repairmanual.com/product/yamaha-virago-xv250-v-star-250-motorcycle-service-manual-cyclepedia-printed/

Check Engine Light Codes and Meanings
Long blinks Short blinks Problem
1 1 Camshaft position sensor
1 2 Mass air flow sensor
1 3 Engine coolant temperature sensor
1 4 Speed sensor
1 11 EVAP control system (flow)
1 14 Fuel injection system right bank (too rich)
1 15 Fuel injection system right bank (too lean)
2 1 Ignition circuit
2 3 Closed throttle position switch
2 5 Idle speed control
2 9 Fuel Injection system left bank (too rich)
2 10 Fuel Injection system left bank (too lean)
3 1 ECU
3 2 Exhaust gas recirculation system flow problem
3 3 Front left O2 sensor
3 4 Knock sensor
3 5 Exhaust gas recirculation temperature sensor
3 6 EGRC-BPT valve
3 7 Closed loop control
3 8 Closed loop control
4 1 Air intake temperature sensor
4 2 Fuel tank temperature sensor
4 3 Throttle position sensor
4 7 Crankshaft position sensor
5 3 Front right O2 sensor
5 4 Automatic transmission control unit
6 3 Cylinder #6 misfire
6 4 Cylinder #5 misfire
6 5 Cylinder #4 misfire
6 6 Cylinder #3 misfire
6 7 Cylinder #2 misfire
6 8 Cylinder #1 misfire
7 1 Multiple cylinder misfire
7 2 Three way catalytic converter (right side)
7 3 Three way catalytic converter (left side)
7 4 Evaporative emission control system pressure sensor
7 5 Evaporative emission control system
7 7 Rear O2 sensor
8 1 Vacuum cut valve bypass valve
8 2 Crank position sensor
8 3 Absolute pressure sensor
8 4 Automatic transmission control unit
8 6 Evaporative emission canister purge control solenoid valve
8 7 Evaporative emission Canister purge control solenoid valve circuit
9 1 Front Right O2 sensor
9 3 Evaporative emission Canister vent control valve
9 5 Crankshaft position sensor
9 8 Engine coolant temperature sensor
10 1 Front left O2 sensor
10 3 Park and Neutral position switch
10 5 EGRC solenoid valve
10 8 Evaporative emission canister purge volume control valve
11 1 Inhibitor switch
11 2 Revolution sensor
11 3 Improper shifting to first gear (Automatic transmission)
11 4 Improper shifting to second gear (Automatic transmission)
11 5 Improper shifting to third gear (Automatic transmission)
11 6 Improper shifting to fourth gear (Automatic transmission)
11 7 Solenoid valve lock up function
12 1 Shift solenoid B (Automatic transmission)
12 3 Overrun clutch solenoid valve (Automatic transmission)
12 4 Torque converter clutch solenoid valve (Automatic transmission)
12 5 Line pressure solenoid valve (Automatic transmission)
12 6 Throttle position sensor (Automatic transmission)
12 7 Engine speed signal
12 8 Fluid temperature sensor
13 2 MAP/BARO Switch Solenoid Valve
13 5 Fuel pump control module
13 8 Cooling fan

no your problem is not the heads you have it right timing is off try putting it on time again you will get it to start and run right,you might be off by 180 degrees try spinnig distributor 1/2 turn and drop back down.always ssstart with the crank on tdc.

IF IT HAS LOW MILES 210 KM
MILES 136
FUEL CAPACITY 9.5 LITRE
65 MPG

Is the engine running on all four cylinders, no missfire? If so, check the engine and transmission mounts, there are four, one at the top right hand side, one at the top of transmission on the left hand side, and one on front of transmission bell housing, and one in the rear transmission bell housing, any of them that are bad can cause this vibration. Hope this helps, let me know.

firing order of 8 cyl 1-8- 4-3-6-5-7-2- If you are standing in front of the vehicle looking at the engine.. the cylinder on the front on your right is #1...Drivers side front to rear is 1-3-5-7 Passenger side front to rear is 2-4-6-8 now the cap..#1 on the cap points to #1 cylinder..for example..the 2 towers most forward on the cap are 8 and 1


6 5

3 7


4 2

8 1

rotor rotates counter clockwise good luck


8 1

better look at carb-there r 5 diff jets but its probly the mid range one-be careful here because rong ajust can hurt engine-u hav a clymer manual? library has many books on mc maintenance-sayonara

well your deffinately flooding if it had no problems like this before the rebuild then i would say its the needle on the float not closing all the way try takinf the carb off and take the bowl off leaving the float on and hook up the feul line and push the float up if its leaking you have a bad needle. if its not leaking then your problem may be the spark to the cylinder

1) #1-4 pass side front to rear #5-8 drivers side front to rear
2) 1-3-7-2-6-5-4-8
3)#1 is usually marked on cap wires go ccw
4) TDC #1 cyl you must remove the shorting plug before timing
it is located by the dist plug or the ignition module small gray plug