Wally Posted January 16, 2023 Share #1 Posted January 16, 2023 where would you start to troubleshoot? engine rebuilt professionally not long ago. Runs great. gauge seems to work, just very low. sending gauge and oil pump is new. Of course that doesnt mean anything today i know. I am thinking change oil and go with a slightly heavier oil. Castol 10-30. Then check. I have another gauge, so i may swap that out just to check. Other than that i am not sure outside buying another pump and sender unit. Link to comment https://www.classiczcars.com/topic/68097-low-oil-pressure/ Share on other sites More sharing options...
SteveJ Posted January 16, 2023 Share #2 Posted January 16, 2023 Check with a mechanical gauge. 1 2 Link to comment https://www.classiczcars.com/topic/68097-low-oil-pressure/#findComment-649370 Share on other sites More sharing options...
Patcon Posted January 16, 2023 Share #3 Posted January 16, 2023 I agree, check on the side of the block with a mechanical gauge Link to comment https://www.classiczcars.com/topic/68097-low-oil-pressure/#findComment-649373 Share on other sites More sharing options...
Wally Posted January 16, 2023 Author Share #4 Posted January 16, 2023 (edited) all my gauge fittings wont fit in the engine block where the oil sender goes. it appears to be m10-1.0 fitting and none of the parts houses or Ace hardware carry them. can someone confirm the proper fitting or maybe link what adapter is need to test? btw, i put wire to oil sender to hot on battery....gauge went all way over, so i would think the gauge is okay. something else is the issue Edited January 16, 2023 by Wally Link to comment https://www.classiczcars.com/topic/68097-low-oil-pressure/#findComment-649376 Share on other sites More sharing options...
Patcon Posted January 17, 2023 Share #5 Posted January 17, 2023 The oil pressure senders are notoriously inaccurate. I think thos are british standard; npt should work 1 1 Link to comment https://www.classiczcars.com/topic/68097-low-oil-pressure/#findComment-649381 Share on other sites More sharing options...
Popular Post SteveJ Posted January 17, 2023 Popular Post Share #6 Posted January 17, 2023 1 hour ago, Wally said: all my gauge fittings wont fit in the engine block where the oil sender goes. it appears to be m10-1.0 fitting and none of the parts houses or Ace hardware carry them. can someone confirm the proper fitting or maybe link what adapter is need to test? btw, i put wire to oil sender to hot on battery....gauge went all way over, so i would think the gauge is okay. something else is the issue That's not how the gauge works. As for an adapter, if you have a mechanical gauge with 1/8 NPT, you need an adapter like this: https://www.amazon.com/Dewhel-Female-Sensor-Adapter-Reducer/dp/B00V5Q6GME and a gauge like this: https://www.amazon.com/dp/B08HRPSJSB 4 1 Link to comment https://www.classiczcars.com/topic/68097-low-oil-pressure/#findComment-649383 Share on other sites More sharing options...
zKars Posted January 17, 2023 Share #7 Posted January 17, 2023 Just to put it out there plainly, the block threads are 1/8 BSPT. The adapter needed is the one SteveJ linked to, BSPT male into the block, 1/8 NPT female to thread in common gauge fittings. 3 Link to comment https://www.classiczcars.com/topic/68097-low-oil-pressure/#findComment-649400 Share on other sites More sharing options...
Diseazd Posted January 17, 2023 Share #8 Posted January 17, 2023 16 hours ago, Patcon said: The oil pressure senders are notoriously inaccurate. I think thos are british standard; npt should work I agree…..Most of the oil pressure gauges seem to read low, especially at idle. Unscrew the the oil filler cap on the valve cover when she’s running. You’ll make a mess if she’s got oil pressure. 🤪 1 1 Link to comment https://www.classiczcars.com/topic/68097-low-oil-pressure/#findComment-649402 Share on other sites More sharing options...
Yarb Posted January 17, 2023 Share #9 Posted January 17, 2023 Glow shift gauges sells a tee where you can run both the factory sending unit and the manual gauge at the same time. Works great 2 Link to comment https://www.classiczcars.com/topic/68097-low-oil-pressure/#findComment-649404 Share on other sites More sharing options...
Wally Posted January 18, 2023 Author Share #10 Posted January 18, 2023 got this in today https://www.amazon.com/dp/B00V5Q6GME?psc=1&ref=ppx_yo2ov_dt_b_product_details it wont fit... i cant understand why unless its a quality control issue with the piece Link to comment https://www.classiczcars.com/topic/68097-low-oil-pressure/#findComment-649441 Share on other sites More sharing options...
SteveJ Posted January 18, 2023 Share #11 Posted January 18, 2023 You aren't giving us much in the way of details here. 1 Link to comment https://www.classiczcars.com/topic/68097-low-oil-pressure/#findComment-649442 Share on other sites More sharing options...
Wally Posted January 19, 2023 Author Share #12 Posted January 19, 2023 2 hours ago, SteveJ said: You aren't giving us much in the way of details here. the male end wouldn't go into the block where the sender goes. It appears to be regular 1/8th on both ends. I ordered another one by a different company. Maybe i just got a faulty one Link to comment https://www.classiczcars.com/topic/68097-low-oil-pressure/#findComment-649448 Share on other sites More sharing options...
motorman7
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