Why does my carb backfire?
Generally, a backfire is caused by an imbalance in the air to fuel ratio. Fuel To Air Mixture Is Too Lean Too much air and not enough fuel causes backfires to occur in the intake manifold. The exploding mixture then vents through the carburetor. Improper carburetor adjustments or vacuum leaks can cause this condition.
What causes a motorcycle backfire?
When the engine on your motorcycle has an emission system malfunction, such as an exhaust leak or a moment of running rich or running lean, backfire can occur. This difference causes backfire in the exhaust. Other causes of backfire are bad or weak fuel pumps, low fuel pressure, or clogged fuel filters.
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.
How big is the fuel tank on a Yamaha Virago?
The Yamaha Virago’s reputation as a trusty cruiser is sometimes hampered by its dismal fuel holding capacity, particularly for the Virago 535, a small 12-liter tank. Virago owners are often reluctant to take long-distance moto-trips on their Virago; the tank only lasts only about 100 miles.
Is the Yamaha Virago a good bike to buy?
It proved attractive to riders as it was easy to ride and offered decent performance. If you are looking for a trusty cruiser with laid-back behavior, the Virago is an attractive option. But you’re here because you’re wondering if these bikes have any common problems and, if so, how severe they are.
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.
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.
How big is the engine in a virago?
Virago Specifications Engine oil With Filter Change 3.3 qts (3,100 cc) Without Filter Change 3.2 qts (3,000 cc) Engine Rebuild 3.8 qts (3,600 cc) Front Forks
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.
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.