Question about 1999 Suzuki Vitara

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Llow oil pressure

I have changed the water pump on H20A motor. Since then the oil pressure drops as soon as the engine gets to working temperature.

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  • Suzuki Master
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It probably has nothing to do with the water pump job. It could be that the engine has reached the age of being worn out, or the oil pressure switch may be failing.
You would want to use a mechanical gauge to check actual oil pressure in the engine hot and cold.

Posted on Jul 17, 2013

  • 1 more comment 
  • Gerhard Oosthuizen Jul 18, 2013

    Thanks Stephen. I did not mention it before, we did put a gauge on it, to confirm that the oil pressure did indeed prop. It goes down to 1 - 2 bar at cold start it is 6 - 7. How do I check the oil pickup. what must we look for.

  •  Stephen
    Stephen Jul 18, 2013

    Well the next step would be to pull the pan and replace the oil pump and screen if the screen is not clogged up. Hopefully the pump has failed, but odds are its the engine bearings and the motor will need to be rebuilt or replaced. As the oil gets hot it gets thin and parts that are worn out allow the oil to leach out back into the pan.

  •  Stephen
    Stephen Jul 18, 2013

    You could check some or all of the crankshaft bearings when you have the pan off, but you would not be able to check cam bearings from the bottom.

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SOURCE: overheats once or twice a day .,if engine left to

Have you check the radiator fan? The're 2 of them but 1 work with the AC.

Posted on Jun 19, 2009

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SOURCE: H20A suzuki spark plug gap

In general, a smaller gap, like .032 inches will give you more power, better starting, especially in cold weather or with a turbo charger.
A larger gap, like .045 inchers will giver you better mileage and better reading on pollution tests.

While the oxygen sensor will pick up on any change in spark plug gap, you can compensate with a variable resistor in series with the oxygen sensor. So you can tweak the power vs mileage any way you want.

Posted on Feb 04, 2010

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