• Tiny
  • d maxwell
  • 1985 Chevrolet

Engine Mechanical problem
1985 Other Chevrolet Models V8 Two Wheel Drive Automatic 72000 miles

driving on interstate oil pressure drops then raises back up. New crate eng. Two years old, about 500 miles on it. No rattle, knocking, or missing. Got any clues

Do you
have the same problem?
Monday, June 7th, 2010 AT 1:48 PM

1 Reply

  • Tiny
  • hmac300
  • Expert
  • 44,910 posts

If it doesn this continually it could be the oil pump pickup is loose or an oil filter as well. There are a few other things it could be as well but the motor would have to come out to check them. Also check the pin on the bottom of the distributor. One other thing if this crate motor has a roller cam an dyou don't have the correct distributor gear the gear on teh distributor will wear very qyick. Check with amanual pressure guage to make sure it is doing what you say as it may be just he guage or sending unit that is not working correctly.

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Monday, June 7th, 2010 AT 6:51 PM

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