Why Does My Carburetor Have a Vacuum Leak at the Manifold?

Answer An automotive carburetor dispenses a measured fuel-air mixture into the intake manifold for the purpose of combustion. The seal between the carburetor and intake manifold must be absolutely leak an... Read More »

Top Q&A For: Why Does My Carburetor Have a Vacuum Leak at th...

Symptoms of a Motorcycle Carburetor Manifold Leak?

A common problem that most motorcycles face is an infiltration of air into the combustible air and fuel mixture that powers the engine. The excess air enters through a leak in the intake manifolds ... Read More »

How to Fix a Carburetor Vacuum Leak?

On carbureted engines, vacuum pressure is created by the operation of the engine to pull in fuel and air through the carburetor. If there are any leaks in the system, the air-fuel ratio will be dis... Read More »

Intake Manifold Leak Vs. Head Gasket Leak?

A head gasket seals an engine as well as the pathways of oil and coolant within the engine. An intake manifold gasket seals the cylinder heads and the intake manifold together. Information on these... Read More »

How to Hook a Vacuum Advance Into a Full Manifold Vacuum?

The vacuum advance mechanism is designed to increase the spark timing once the engine is started. It allows the timing to be retarded for the purpose of starting. As soon as the engine is started, ... Read More »