Mazda CX-5 Service & Repair Manual: Exhaust Manifold
Purpose, Function
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By lengthening the exhaust passage, the transmission of exhaust pressure waves to other cylinders can be delayed, and the amount of gas exhausted from a cylinder and forced back inside the combustion chamber is reduced By reducing the residual gas, the temperature inside the combustion chamber is reduced and the occurrence of knocking even at a high compression ratio is inhibited.
Construction
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The exhaust manifold is installed to the rear of the engine. In addition, the catalytic converter (WU-TWC) is integrated (WU-TWC).
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When the No.1 cylinder is at the intake stroke, the No.3 cylinder is at the exhaust stroke. By inducing the high temperature gas exhausted from the No.3 cylinder into the No.1 cylinder, the high temperature gas in the No.1 cylinder remains. If the amount of residual gas is high, the temperature in the combustion chamber rises and knocking can easily occur. With the 4-2-1 exhaust system, the transmission of exhaust pressure waves between each cylinder is delayed by the long exhaust pipes.
Exhaust System Removal/Installation
WARNING:
A hot engine and exhaust system can cause severe burns. Turn off the engine
and wait until they are cool before removing the exhaust system.
2WD
1. Disconnect the negative b ...
Other materials:
Lighting Control
Headlights
• Turn the headlight switch to turn the headlights,
other exterior lights and dashboard illumination on or off.
• A system malfunction or operation conditions
are indicated by a warning.
Refer to Warning/Indicator Lights 5.
NOTE
• If the light switch is left on, the
light ...
Engine Control System
Outline
L-jetronic*1 and D-jetronic*2 type detectors have been combined for intake
air amount detection, improving the accuracy of the intake air amount measurement.
MAF sensor adopted
MAP sensor adopted
IAT sensor No.1 and No.2 adopted
...
Fuel Gauge Sender Unit Inspection [2 Wd]
NOTE:
For the fuel gauge sender unit removal/installation, refer to the fuel pump
removal/installation because the fuel gauge sender unit is integrated with the
fuel pump..
1. Verify that the resistance at fuel gauge sender unit terminals D and C is
as indicated in the table ac ...
