What is the normal value of the engine intake manifold vacuum?
Vacuum meter to measure the vacuum of the intake manifold, idling vacuum gauge pointer in 45 kPa outside the swing back and forth, the engine running vacuum table readings dropped to 37 kPa, it was diagnosed with a cylinder valve seal bad.
After preliminary analysis, suspected into the exhaust system is faulty.
A Japanese Honda Accord (Accord) car into the factory maintenance, the driver reflects the car to speed up the stall, and accelerated from the air filter issued similar to the carburetor temperfire "bang" sound.
Demolition of the cylinder head and found the second cylinder into the row of rod bending deformation, resulting in the cylinder into the exhaust valve closed lax.
