Question about Mazda MAZDA3
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Posted on Jan 02, 2017
SOURCE: went to autozone they diagnostic
The intake manifold runner valve system is mounted on the intake manifold and consists of the intake manifold runner valve (IMRV), the IMRV motor and the IMRV position sensor. The IMRV motor opens and closes the IMRV using multiple gears. The valve position sensor detects the opening angle of the IMRV. The IMRV has a groove on its upper portion. When the IMRV is closed, air flows through a groove into the cylinder from the intake manifold, so that a dynamic air flow or "tumble" air flow is generated in the cylinder. The tumble air flow drastically reduces fuel deposits inside the intake air port and the combustion wall surface inside the cylinder. This improves the combustion efficiency by boosting the air−fuel mixture and air flow turbulence.
Check this document for Diagnosis procedures and more information:
Posted on Aug 03, 2011
p2004 (Intake Manifold Runner Control Stuck Open)You need to take a look at the IMRC actuators on the intake manifold. You can try using a screwdriver or other tool to move the actuators to see if one is stuck in the open position. Do not use your fingers to do this, because if one is open and decides to close it has a bit of force behind it and can injure you. If the IMRC is stuck open, it is usually due to deposits in the intake manifold. Repair involves removing the upper intake manifold and cleaning out any deposits in the IMRC plate area. I would try running some Techron Concentrate in 2 tanks of gas to see if it dissolves enough of the gunk on the plates to free up the stuck one. Certainly a lot cheaper than having to pull the intake manifold and cleaning the plates. Always run tier one gasoline like Shell or Chevron to reduce the buidup of deposits.
Posted on Dec 19, 2008
SOURCE: Torque on 1994 Mazda pick up
if its a four cylinder(lets hope)the specs are 80-90ft.lbs torque.if its a six cylinder it is 14ft.lbs torqueat 90 degree intervals then repeat until correct torque has been reached.bad news is you can not use the same bolts on the six cylinder engine.have to be new to keep from breaking them
Posted on Mar 15, 2009
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