M
My61bird
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- Last seen
- Joined
- Jan 6, 2023
- Thunderbird Year
- 1961
Thanks we're just a little south of Raleigh NC
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My61bird, it the oil pressure is still poor after you put in a new oil pressure sensor or mechanical oil gauge, Yes dropping & cleaning the oil pan would be a very good thing to do.If you don't have reliable oil pressure your next move should be to drop the pan. . . . . . .
I think he said the oil pressure was good at start-up but the light came on later. Gunk got spread around and plugged up everything. pulling the valve covers may reveal a lot.The oil pressure may be the reason it was parked!
Did it look something like this?I pulled the pan off the old engine in a '55 and there was so much sludge in the bottom I'm surprised it got any oil at all. Next was a '57, the cover & screen around the bottom of the pickup tube had come loose & dropped to the bottom, blocking the pickup, no usable oil pressure under 1200 rpm!
The crank had to be turned... a lot.
I've seen hydraulic lifters go bad. Plugged and won't pump up. My 'Y' block has solid lifters so that is another good possibility I didn't think of. But the compression difference is still an issue.Lifters are hydraulic, but maybe a lifter is ticking.
Give it a run!