Can someone tell me what my compression should read on a 1984 Toyota Tercel?
Its the 3A 4 cyl engine. I have looked everywhere and can’t find anything. I have done my compression tests and have nothng to compare it too.. Thanks A: New engines have a compression rating between 150 and 170 psi per cylinder. As they get older, they lose compression but many engines will run just fine with a reading of 105 psi per cylinder. Take the psi measurements for each of the 4 cylinders on your Tercel, if there is a variation of more than 10% on any of them, this could mean a rebuild is needed in the near future. For example, if your compression readings for cylinders 1 through 4 were: 135 psi, 125 psi, 90 psi and 125 psi, it would be fair to say that cylinder number three is not working efficiently and is almost certainly the cause of your oil burning, rough idle or poor fuel mileage. You can determine what might be the problem on a cylinder that has a really low psi reading by doing a few more easy tests. First off, pour a tablespoon of clean engine oil into the cylinder t
