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Showing results for tags 'oil pressure gauge'.
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The sender is the one at the front of the engine yes? Electrical? Takes one wire, earths through the block? Which gauge? where do I get it (cheapest)? Test the gauge by 1. shorting? 2. going open circuit?
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I came across this post on TractorByNet and I have a remarkably similar problem: I wonder whether Richardf59 ever solved his issue satisfactorily. I have a D3.152 dating back to pre-1992 (the age of the boat), which I can only guess was taken from an MF135 tractor or generator and marinised for installation into a narrowboat. We have had it for two years without much problem, except for some clogged fuel filters, but broke down in March this year and we had to have the engine removed and rebuilt after finding one piston was oval in the cylinder; all bearings, liners and pistons replaced, and new oil pump fitted. In fact the engine had to come out twice, because during the first re-installation something metallic smashed up the crown of one of the new pistons. Anyway, when we finally had everything back in order she ran beautifully; from cold the idling oil pressure was about 40-50 psi. However, I have found that an hour or so after getting up to temperature (75 C, constant) the oil pressure gauge can fluctuate rapidly from 10-60 psi, even at normal cruising speeds, often mimicking the tone of the engine (revs fluctuating?), and to maintain good pressure we have to push the revs up higher than normal. At idle and tick-over the pressure reads a constant 20 psi, but I am concerned that this could also be bottoming out on the gauge range and simply a reading error. The sensor and gauge are electric, so I shall be swapping with a new one and also testing with a hydraulic pressure gauge next week. At normal cruise speeds on some long days (6-8 hours running) the oil pressure fluctuates around 30 psi and above, so the engineer who rebuilt it says it is within normal operating parameters, but this doesn't fill me with confidence for the long term. I use a 15W40 oil and changed the oil and filters after 50 hours after re-installation, which made no difference. I have no rev counter, just gauges for temperature, oil pressure and battery charge. Any thoughts/suggestions welcome.
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- perkins 3.152
- oil pressure gauge
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