Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Oil pressure problem?
The oil pressure in my '67 Pontiac indicates 70psi when started cold. When fairly warm I get about 20psi indicated at idle and 40 or so at 3000rpm. After reaching running temperature the gauge shows 0psi at idle and maybe 20 pounds when rev'd. I'm using 20W50 oil and the pressure gauge is electric, using a 1967 pressure transmitter. What would cause this?
5 Answers
- Anonymous2 decades agoFavorite Answer
Pull the transmitter out, install a mechanical gauge on it to get a true reading....could save you a bundle down the road if you do have problems
- fire4511Lv 72 decades ago
It could be a problem with the electonics or you could have amajor problems with the engine. As the previous answer said, check the oil pressure with a mechanical gauge to find out if you have an oil perssure problem or a problem with the sending unit!
Source(s): 26 years in the auto business - Anonymous2 decades ago
Ensure correct oil-level in chamber and try again. If it fails, try to open up the rocker heads and take a look at it. If oil is retained there for a long time, you might need to service your guides. There should be no further problem related to this.
- TruyerLv 52 decades ago
Most likely the rod and main journals are worn-out, when the oil is cold and thicker the pump can build pressure, when hot its thin and it just can't keep up.
- How do you think about the answers? You can sign in to vote the answer.
- 2 decades ago
i had a 80 ford pickup that done the same thing 0 psi at idle is not a problem as long as it dont knock
