1966 Other Pontiac Models trouble shooting

1966 PONTIAC
75,000 MILES • V8 • 2WD • MANUAL
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DAVE7088
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  • 1 POST
The engine is a 389, three duces, 4 speed. The engine suddenly started smoking from the oil filler cap in the valve cover. The engine runs well at high or low rpm and idles well. The plugs look good and there is no evidence of a blown head gasket. How do I trouble shoot this? Thanks for your help.
Dave from Atlanta
Apr 18, 2008 at 3:20 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
check your pcv valve for operation. Sometimes the hose blocks up and stops the pcv from working correctly. You may have to replace the hose and a good idea to replace the pcv at the same time. If it still smokes then check the engine for leakdown. That is something you won't be able to do.
Nov 1, 2009 at 9:02 AM
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