Cause |
elimination |
A. The oil pressure indicator light stays dark when the ignition is on. |
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B. The oil pressure warning light glows when the engine is warm at idle and goes out when the engine speed increases. |
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Hot and therefore liquid oil. |
Switch to a higher viscosity oil if possible. |
B. The oil pressure warning light goes out only at high speeds. |
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The bypass valve in the main oil line is leaking. | Check oil pressure, replace valve if necessary. |
D. The oil pressure indicator lamp lights up only when the engine is started and does not go out even when gas is supplied. |
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