Question 1

How to remove and install an exhaust manifold on Mazda 3?

Accepted Answer

The next step to eliminate the exhaust manifold is lifting the vehicle and jackstanding it. When the engine is cool, wet the nuts that clamp the heat-shield together with penetrating oil to loosen rust, and then remove the heat shield, and cover the bolts that connect the exhaust manifold with penetrating oil. Unattach the exhaust pipe and the exhaust manifold and remove the old gasket on the flange. Disconnect the electrical connector of oxygen sensor, and take out the sensor of the manifold. The exhaust manifold mounting nuts are then removed, then the old gasket and the manifold. Apply a stud removal tool or 2 nuts screwed against each other to remove the old studs in the cylinder head. Check the exhaust manifold, whether there are cracks or damage; in case there are any, change it. Clean the mating surfaces of gasket material by scraping without scratching or gouging the mating surfaces as this may cause exhaust leakage. Check the mating faces with a straightedge and feeler gauge, this should not be excessive. To install, a new exhaust stud needs to be installed into the cylinder head, then the manifold is installed using a new gasket and self-locking nuts and the threads on the studs should be coated with anti-seize compound. Assemble the nuts in stages, starting at the center and out to the desired torque. Lastly, start up the engine and ensure no leaks of exhaust.

Question 2

What steps should be followed to replace the exhaust manifold for V6 engine on Mazda 6?

Accepted Answer

It is necessary to ensure that the engine is cool before commencing this process and apply penetrating oil to the fasteners of the manifold and converter. A catalytic converter is an essential part of the exhaust manifold, as is present in most models. In case of the front exhaust manifold, remove the cable at the negative battery terminal and electrical connector of the upstream and downstream oxygen sensor. Lift the front of the car and place it safely on jackstands and then disconnect the crossover pipe at the bottom. Unscrew the heat shield on top of the front exhaust manifold, take off the six nuts that hold the exhaust manifold in place and take off the manifold and the gasket. Removal of studs in extracting and discarding of exhaust manifold Studs: Use a stud holding tool or two nuts screwed together over a stud. The old gasket material and carbon deposits on the mating surfaces of the manifolds and the cylinder head should be scraped carefully without causing a gouge to the aluminum components. In case of leaking gasket, inspect the manifold and re-surface where there is a possibility of warping. Install the new light oil upon the threads on the exhaust manifold studs, fit the new manifold gasket to the studs and mount the manifold with the new self-locking nuts. Install the nuts, by tightening in the center first and then to the ends, to the required torque. The rest of the installation is an inverse removal process. In the case of the rear exhaust manifold, deconnect the cable to the negative battery terminal, take out the EGR pipe in the exhaust manifold and disconnect the connector with the rear bank oxygen sensor on the 3.0L engines. In 3.7L engines, the rear-bank catalytic converter is removed. Take out the nuts on the exhaust manifold flange, and decouple the crossover pipe and the manifold. Unscrew the six mounting nuts on the exhaust manifold and detach the manifold removing the gasket. Extract and discard the exhaust manifold studs using a stud holding tool or a pair of new nuts screwed using a pair screwdriver over a stud. Once more, remove all gasket material and carbon deposits on the exhaust manifold and the mating surfaces of the cylinder head taking care of aluminum pieces. Install the new light oil upon the threads on the exhaust manifold studs, fit the new manifold gasket to the studs and mount the manifold with the new self-locking nuts. Install the nuts, taking the ones at the center first, then the ones at the ends, and installing to the desired torque, then carry out the installation in the same manner as the removal.

Genuine Mazda Exhaust Manifold

67 Exhaust Manifolds found

Mazda Exhaust Manifold Part Number: AJD6-20-55X

Mazda Exhaust Manifold Part Number: L327-13-450F

Mazda Exhaust Manifold Part Number: L533-13-45XA

Mazda Exhaust Manifold Part Number: L3K9-13-450

Mazda Manifold W/Converter Part Number: PYEL-20-50X

Mazda Manifold W/Converter Part Number: PYEK-20-50X

Mazda Converter Part Number: PY8V-13-450L

Mazda Exhaust Manifold Part Number: L362-13-45XG

Mazda Exhaust Manifold Part Number: L3H8-13-45XC

Mazda Manifold W/Converter Part Number: PYKV-20-50X

Mazda Exhaust Manifold Part Number: PEDR-20-50X

Mazda Manifold W/Converter Part Number: PYEE-20-50X

Mazda Exhaust Manifold Part Number: PYEE-20-50XA

Mazda Exhaust Manifold Part Number: PY1G-20-50X

Mazda Catalytic Converter Part Number: PYBC-20-50X

Mazda Manifold W/Converter Part Number: PYCX-20-50X

Mazda Exhaust Manifold Part Number: PYFH-20-50X

Mazda Manifold Part Number: 1F22-13-451

Mazda Manifold Part Number: FP49-13-450

Mazda Exhaust Manifold Part Number: AJD6-20-50X

Mazda Exhaust Manifold

Mazda Exhaust Manifold Parts and Q&A

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