What causes the engine to backfire on a virago?
This, in turn allows some unburnt fuel to get into the exhaust pipes. Then when the engine does fire, these unburnt gasses are ignited in the exhaust pipe, causing the backfire. Newer Virago carbs have an ‘enricher circuit’ which cuts in on deceleration to help this problem.
What to do about compression backfiring on a Yamaha Virago?
IN REGARD TO THE COMPRESSION BACKFIRING PROBLEM WHEN DE-ACCELERATING, I THINK I MAY HAVE A CURE. A COMBINATION OF INSTALLING HIGH QUALITY SPARK PLUGS (SUCH AS SPLIT FIRE) GAPPED METICULOUSLY, CLEANING THE PLUGS AND CHECKING THE GAP EVERY 1,000 MILES, AND USING AN OCTANE IMPROVER IN THE GAS HAS VIRTUALLY ELIMINATED MY PROBLEM.
Why does my Yamaha Virago keep losing power?
Once the bike is back in use, the sludge-clogged components interfere with the fuel’s bath, and the bike is “starved” of fuel. This causes the motorcycle to sputter and jerk while riding. If the fuel supply has been restricted severely, the bike may lose power completely. Another hidden culprit of poor performance on a Virago is rust.
When did I buy my first Yamaha Virago?
I own an 1986 – 700 that I bought with 900 miles on it in 1988. The bike was kept in storage and clearly not ridden much. About two years after the buy and a lot of riding I experienced a total loss of power from the front cylinder while rolling down the road at the legal speed limit of course.
Are there any problems with the Yamaha Virago?
I receive many repeat problems from Virago owners all around the world, but one of the most common scenarios goes something like this, “I just bought this great bike, a 1982 Virago with 13 actual miles on the clock, not a scratch on the bike and the owner had it since it was new.”
This, in turn allows some unburnt fuel to get into the exhaust pipes. Then when the engine does fire, these unburnt gasses are ignited in the exhaust pipe, causing the backfire. Newer Virago carbs have an ‘enricher circuit’ which cuts in on deceleration to help this problem.
Can a virago backfire on a commercial toilet?
I own a 1983 virago xv920k with which I have had the decel backfire problem. The mixture control valve works exactly like a flush valve for a commercial toilet! Intake manifold vacuum acts on a diaphragm which in turn actuates a plunger allowing air to be inducted into the front #2 cylinder.
IN REGARD TO THE COMPRESSION BACKFIRING PROBLEM WHEN DE-ACCELERATING, I THINK I MAY HAVE A CURE. A COMBINATION OF INSTALLING HIGH QUALITY SPARK PLUGS (SUCH AS SPLIT FIRE) GAPPED METICULOUSLY, CLEANING THE PLUGS AND CHECKING THE GAP EVERY 1,000 MILES, AND USING AN OCTANE IMPROVER IN THE GAS HAS VIRTUALLY ELIMINATED MY PROBLEM.
Why does my Yamaha Virago not have gas?
Rust developed at the bottom of the tank where the fuel is drawn from. The rust broke down into superfine particles that passed through the tanks filter and started building up in the area described above. At some point, it would close off fuel flow and the bowl would empty starving the bike for gas.
What causes fuel line to stick on Virago?
Fuel in the fuel lines does so as well. Some fuel may, at some time, have settled in the breather check valve, evaporated and caused the ball in the check valve to stick. Now, you buy this bike, jump on it, start it up . . . it runs great . . . and you ride off into the sunset.
Why is the fuel selector valve on my Virago cracking?
Now, add to this a couple of dried out vacuum lines which operate the diaphragm in the fuel selector valve, which by the way has dried out and has cracked. And all of a sudden, you have second thoughts about the great bike that you just bought.
Rust developed at the bottom of the tank where the fuel is drawn from. The rust broke down into superfine particles that passed through the tanks filter and started building up in the area described above. At some point, it would close off fuel flow and the bowl would empty starving the bike for gas.
Fuel in the fuel lines does so as well. Some fuel may, at some time, have settled in the breather check valve, evaporated and caused the ball in the check valve to stick. Now, you buy this bike, jump on it, start it up . . . it runs great . . . and you ride off into the sunset.
Now, add to this a couple of dried out vacuum lines which operate the diaphragm in the fuel selector valve, which by the way has dried out and has cracked. And all of a sudden, you have second thoughts about the great bike that you just bought.
I own a 1983 virago xv920k with which I have had the decel backfire problem. The mixture control valve works exactly like a flush valve for a commercial toilet! Intake manifold vacuum acts on a diaphragm which in turn actuates a plunger allowing air to be inducted into the front #2 cylinder.
I receive many repeat problems from Virago owners all around the world, but one of the most common scenarios goes something like this, “I just bought this great bike, a 1982 Virago with 13 actual miles on the clock, not a scratch on the bike and the owner had it since it was new.”
Are there any misfires on my Honda Goldwing?
Like everything is fine when he’s warmed up; no misfires, quick throttle, etc. Hmmm. Long story short: 4 intake pipe O-Rings later, and no misfires even when cold. The new rings were about twice the thickness of what they replaced. My guess is that they were the original O-Rings, which means 27 years of compression against the head.
What happens if the rectifier on a virago goes bad?
The rectifier/regulator is the part responsible for maintaining a suitable current. A bad rectifier can destroy the battery. Signs of failed regulator/rectifier include engine sputtering, rough idling, or loss of acceleration power. The regulator controls the battery’s voltage and keeps its power output within limits.
Like everything is fine when he’s warmed up; no misfires, quick throttle, etc. Hmmm. Long story short: 4 intake pipe O-Rings later, and no misfires even when cold. The new rings were about twice the thickness of what they replaced. My guess is that they were the original O-Rings, which means 27 years of compression against the head.
How does a Harley Davidson backfire on deceleration?
When it comes to backfiring on deceleration, the bike typically backfires through the exhaust pipes. In the event of a backfire when accelerating, the Harley backfires through the motorcycle’s combustion chamber. The combustion chamber and the exhaust pipes and wiring are all part of a Harley Davidson exhaust system.
What causes the engine to backfiring on deceleration?
In general, backfiring on deceleration (as opposed to acceleration) is generally caused by a lean condition in the pilot circuit. What happens is that the mixture leans out enough to where is fails to ignite consistenty. This, in turn allows some unburnt fuel to get into the exhaust pipes.