Mike Allfrey
Member
Hello,
I have a 1976 Rover P6B, generally in excellent condition, however, I am a bit concerned about the engine's oil pressure. In warm weather conditions (28-35 degrees C, ambient) and in very slow stop/start traffic conditions, the engine heats up to the extent that the temperature gauge indicator needle sits just within the RH end of the green sector. In such conditions, the oil pressure gauge drops close to zero, but the low oil pressure warning light does not illuminate. As the engine's revs increase, the oil pressure climbs steadily to about the mid position on the gauge.
The car has air conditioning and is equipped with automatic transmission. The engine oil is of top quality and of the correct type. The car is regularly serviced and a new oil filter cartridge is installed at every service. A new oil pressure transmitter will be fitted at the next service.
Any thoughts or previous experiences on this concern?
In addition to that one, I am also wondering about the condition of the hydraulic lifters (tappets). Maybe they are a source of oil pressure loss at low idle. The engine does require a great deal of cranking to start when cold, which makes me think that there is a concern with the lifters. For cold starts I have tried leaving the ignition switched on for about 45 seconds for the rear mounted electric fuel pump to get petrol to the engine, but that does not make much difference. The engine is fitted with a new electronic ignition system and, once running, operates very nicely.
Any comments will be appreciated,
Mike Allfrey (Melbourne, Australia) Rover P6B in 'Spanish Olive' and known as Pea Soup!
I have a 1976 Rover P6B, generally in excellent condition, however, I am a bit concerned about the engine's oil pressure. In warm weather conditions (28-35 degrees C, ambient) and in very slow stop/start traffic conditions, the engine heats up to the extent that the temperature gauge indicator needle sits just within the RH end of the green sector. In such conditions, the oil pressure gauge drops close to zero, but the low oil pressure warning light does not illuminate. As the engine's revs increase, the oil pressure climbs steadily to about the mid position on the gauge.
The car has air conditioning and is equipped with automatic transmission. The engine oil is of top quality and of the correct type. The car is regularly serviced and a new oil filter cartridge is installed at every service. A new oil pressure transmitter will be fitted at the next service.
Any thoughts or previous experiences on this concern?
In addition to that one, I am also wondering about the condition of the hydraulic lifters (tappets). Maybe they are a source of oil pressure loss at low idle. The engine does require a great deal of cranking to start when cold, which makes me think that there is a concern with the lifters. For cold starts I have tried leaving the ignition switched on for about 45 seconds for the rear mounted electric fuel pump to get petrol to the engine, but that does not make much difference. The engine is fitted with a new electronic ignition system and, once running, operates very nicely.
Any comments will be appreciated,
Mike Allfrey (Melbourne, Australia) Rover P6B in 'Spanish Olive' and known as Pea Soup!