1994 Mazda RX 7 Troubleshooting Lubrication System

1994 Mazda RX 7 Troubleshooting Lubrication System

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Hello audience, Today, we want to write an article about the Lubrication system in 1994 Mazda RX 7 we hope this article useful for you especially for Mazda RX 7 1994. Let’s take a look troubleshooting below:

OIL PRESSURE

Warn...

Hello audience, Today, we want to write an article about the Lubrication system in 1994 Mazda RX 7 we hope this article useful for you especially for Mazda RX 7 1994. Let’s take a look troubleshooting below:

OIL PRESSURE

Warning: Continues exposure with USED engine oil has caused skin cancer in laboratory mice. Protect your skin by washing with soap and water immediately after work.

The warning above always a reminder for us to protect our body from any kind of diseases mentioned above.

Before start to check or diagnosis oil pressure, we need preparation for what necessary to inspect oil pressure.

Preparation

oil pressure 1

oil pressure 1

SST: Gauge, oil-pressure for inspection of oil pressure

INSPECTION

oil pressure 2

oil pressure 2

  1. Disconnect the connector and remove the oil pressure sensor.
  2. Install the SST
  3. Start the engine and let it warm up to operating temperature.
  4. Run the engine at 3,000 rpm and note the gauge reading. Oil pressure: 340 kPa {3,5 kgf-cm2,50 psi} min
  5. If the pressure is not as specified, check for the cause and repair. (Refer to Troubleshooting Guide)
  6. Remove the SST.
  7. Apply sealant to the oil pressure sensor threads. Do not allow sealant in the pressure sensor hole.
  8. Install the oil pressure sensor. Tightening torque:11-15N-m{1.1-1.6 kgf-m,8-11 ft-lbf}
  9. Connect the sensor connector.

After inspected oil pressure now we jump to the next step, checking the engine oil.

ENGINE OIL

engine oil 3

engine oil 3

Inspection

engine oil 4

engine oil 4

  1. Be sure the vehicle is on level ground
  2. Warm up the engine to normal operating temperature and stop it.
  3. Wait for five minutes
  4. Remove the dipstick and check the oil level and condition.
  5. Add or replace oil as necessary.

Note: the distance between the L and F marks on the dipstick represents 1.7 L {1.8 US qt, 1.5 lmp qt}

After finishing the inspection you can decide to change oil or not? if it needs to change let’s see how to change the oil below:

Warning: when the engine and the oil are hot, they can badly burn. Don’t burn yourself with either.

  1. Warm up the engine to the normal operating temperature and stop it. Why we need to warm up the engine before replacing the oil, because it’s can help us we opened the oil cap and the oil can drip continuously until the oil in the engine is running out.
  2. Remove the oil filler cap and the oil drain plug.
  3. Drain the oil into a container. About oil containers, you can make it yourself or buy it from a local store. Make sure that container capacity larger than oil.
  4. Install a new gasket and the drain plug. Tightening torque: 30-41 N-m(3.0-4.2kgf-m,22-30 ft-lbf)
  5. Refill the engine with the specified type and amount of engine oil. Oil capacity is shown below engine oil 5

    engine oil 5

  6. Refit the oil filler cap.
  7. Run the engine a few minutes and stop it.
  8. Recheck the oil level and add oil if necessary.

For the feather, the step doesn’t forget to replace the oil filter. Just remember when replacing oil also replacing the oil filters. How to replace oil filter?, you can take a look at below:

OIL FILTER

oil filter

oil filter

REPLACEMENT

  1. Remove the oil filter by using the oil filter wrench.
  2. Using a clean rag, wipe the mounting surface of the engine
  3. Apply a small amount of clean engine oil to the rubber seal of the new filter.
  4. Install the oil filter and tighten it until the rubber seal contacts the base, and then tighten the filter an additional 1-1/6 turns by hand.
  5. Start the engine and inspect the leaks around the filter seal.
  6. Stop the engine and check the oil level; add oil if necessary.

Note

The factory-installed oil filter and the service part filter are different.

Service oil filter capacity: 0,17L{0.18 US qt,0.15 lmp qt}   

OIL COOLER

Removal/installation

  1. Disconnect the negative battery cable.
  2. Remove in the order shown in the figure.
  3. Install in the reserve order of removal

Note

(In case of two oil cooler are equipped)

LH oil cooler is shown.

Remove / install RH oil cooler in same procedure.

oil cooler

oil cooler

  1. Light bezel
  2. Brake pipe air duct
  3. Oil cooler hoses
  4. Oil cooler
  5. Air duct (oil cooler)

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