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Low oil pressure

Barrus shire 1250 4ntv88 with 700 hrs and about 4 1/2 years old. The oil pressure is 2.5 to 4 bar cold and about 2 to 3 bar hot. The manual states 0.6 bar idle and 3.9 to 5.4 bar normal ! I service it every year with the correct oil and filter and run the engine with the pto engaged.
I would like to know what is normal running and do you think I might have a problem. I have spoke to barrus but they wont come out under warranty untill i have had the pressure checked. I'm going to get the pressure checked with a Master meter soon but I would be interested in your opinion.
Many thanks Anthony

Asked by: anthony spanswick  | 6.44pm, Sunday 23 April


WW says:

I do not think you have a problem although you do not say what the pressure was when the engine was new.
It would however be worth checking the oil pressure with another meter, and it might be worth looking at the oil pressure relief valve. If this valve is not sealing properly or the spring is weak it will leak oil and reduce the pressure.

Rupert Smedley  | 12.07PM, Tuesday 25 April

Sorry I do not know where the oil pressure relief valve is on this engine, but it is often close to the oil filter.

Rupert Smedley  | 5.21PM, Tuesday 25 April


Readers say:

Thankyou for your reply, do you know we're the relief valve is on the engine.Many thanks Anthony

anthony spanswick  | 3.46PM, Tuesday 25 April

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