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Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months 200 1990

posted by  someone claiming to be Volvodad on  Wed May 19 17:50 CST 2021 [RELATED]

Very unlikely that oil pressure is causing rough running. The fact that wet weather correlated with rough running suggests electrical problems - as Art points out.

Yes, check oil pressure with a mechanical gauge. I got one from Harbor Freight for about $30 and it's a decent rig, plenty of adapters to fit nearly anything. Definitely proves low pressure - or not. Here you go:

https://www.harborfreight.com/engine-oil-pressure-test-kit-62621.html





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