Normally, the oil light indicates low oil pressure, usually due to lowe oil level. That being said, is you have a constant oil light with the engine running and you are not getting clacking noises from the valves, you may have a defective oil sender. Regardless, it is not worth destroying the engine to find out. You should immediately shut the engine and check the oil level. If it is very low, add oil and retest. If the fault persists, attach a mechanical oil pressure gauge to the engine. If the pressure is normal (usually 30-45 psi), then change the oil pressure sensor. If the oil pressure is less that 20 psi, you should investigate the oil sump and pump for problems.
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Normally, the oil light indicates low oil pressure, usually due to lowe oil level. That being said, is you have a constant oil light with the engine running and you are not getting clacking noises from the valves, you may have a defective oil sender. Regardless, it is not worth destroying the engine to find out. You should immediately shut the engine and check the oil level. If it is very low, add oil and retest. If the fault persists, attach a mechanical oil pressure gauge to the engine. If the pressure is normal (usually 30-45 psi), then change the oil pressure sensor. If the oil pressure is less that 20 psi, you should investigate the oil sump and pump for problems.