PeterBoater
Well-Known Member
Lakesailor
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Should I worry about low oil pressure reading until revs above 1500 on Yanmar?
- Thread starter tudorsailor
- Start date
PeterBoater
Well-Known Member
Yanmar oil pressure senders are notoriously unreliable (reading low) after a period of use and are a ridiculous price to replace, especially as they only last a few years. I connected a test gauge (£20 on ebay) and found to my relief that the actual pressures at idle and higher revs are exactly within limits.
earlybird
Well-Known Member
A third-party sender compatible with your Yanmar item is likely to be difficult to source. I think that you probably have 2 realistic choices:-
1) Paying out for the expensive Yanmar part, or,
2) buying a new, non-Yanmar sender and gauge together, at less cost than the Yanmar sender alone.
Many senders are 1/8" NPT, I've got an idea that this is not the Yanmar standard, this might be a snag with suggestion 2) unless you can get an adapter.
Or just rely on the switch.
1) Paying out for the expensive Yanmar part, or,
2) buying a new, non-Yanmar sender and gauge together, at less cost than the Yanmar sender alone.
Many senders are 1/8" NPT, I've got an idea that this is not the Yanmar standard, this might be a snag with suggestion 2) unless you can get an adapter.
Or just rely on the switch.
B58
Well-Known Member
Hi Tudorsailor
I think Lakesailor is refering to the oil pressure switch?
The Yanmar gauge will not work with the Bosch/VDO sender.
Yanmar have had prenty of problems with the can type oil pressure sender, they are still giving problems!
As your oil system has two warnings oil pressure switch and oil pressure sensor, if your gauge reads zero but the alarm doesn't sound you know that your pump is still pressurising the system.
Fit a 5bar VDO sendor and 52mm VDO gauge.
But as a precaution, you should check the oil pressure first.
Not come across a pump failure on JH3 or any of the other JH varients.
I think Lakesailor is refering to the oil pressure switch?
The Yanmar gauge will not work with the Bosch/VDO sender.
Yanmar have had prenty of problems with the can type oil pressure sender, they are still giving problems!
As your oil system has two warnings oil pressure switch and oil pressure sensor, if your gauge reads zero but the alarm doesn't sound you know that your pump is still pressurising the system.
Fit a 5bar VDO sendor and 52mm VDO gauge.
But as a precaution, you should check the oil pressure first.
Not come across a pump failure on JH3 or any of the other JH varients.
tudorsailor
Well-Known Member
Thanks to everyone.
The pressure gauge has been changed and according to my co-owner who is on board, all is now as it should be.
TudorSailor
The pressure gauge has been changed and according to my co-owner who is on board, all is now as it should be.
TudorSailor
charles_reed
Well-Known Member
That is because you're such a big strong MAN
Lakesailor
Well-Known Member
I think you may be right there. However they are sorted now. (I still prefer a capillary tube gauge.)
BTW anyone who wants adaptors at very reasonable prices should call these people http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=151061304898
They are very helpful and carry huge stocks.