How are exhaust manifold pressure and intake manifold pressure related?
Exhaust manifold pressure is governed mainly by engine exhaust flow rate, turbine area, and exhaust manifold volume. It affects turbine pressure ratio and hence intake manifold boost pressure. It also largely affects the engine delta P (i.e., exhaust manifold pressure minus intake manifold pressure).
Where does the heat come from in the intake manifold?
The heat is usually supplied from the exhaust gases or cooling water, sometimes hot-spot are provided at points where the fuel strikes in the intake manifold.
What kind of material is the intake manifold made of?
It is usually made of cast iron so that it is capable to resist the high temperature of the exhaust gases. The intake manifold is a cast iron or aluminium tube for carrying the air-fuel mixture from the carburettor to the engine intake port.
Can a blown head gasket cause low compression?
If two cylinders next to each other both have low pressure, a blown head gasket is a likely culprit. If you discover you do have low compression, the only solution is to replace the leaking part whether it’s the piston, piston ring, camshaft, head gasket or valves.
The heat is usually supplied from the exhaust gases or cooling water, sometimes hot-spot are provided at points where the fuel strikes in the intake manifold.
What are the symptoms of a bad exhaust manifold?
One of the first symptoms of a problem with an exhaust manifold gasket is an excessively noisy engine. A faulty exhaust manifold gasket will produce an exhaust leak that will sound like a hissing or tapping sound coming from the engine.
Which is the primary outlet for the intake manifold?
In a four-barrel intake manifold, the primary and secondary outlets for the same side of the carburettor lead the same cylinders 2, 3, 5, and 8, while the left-hand outlet leads to cylinders 1, 4, 6 and 7. The exhaust manifold is a tube for removing the exhaust gases away from the engine cylinders.
What does compression mean on a blown head gasket?
CASE 2: Two side by side cylinders had 0 PSI compression. This engine compression reading confirms that the head gasket is burned thru’ at the point between those two cylinders.