1998 Ford Ranger engine noiise

1998 FORD RANGER
107,000 MILES • 6 CYL • 4WD • MANUAL
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JIM BERNARD
  • MEMBER
  • 1 POST
When I start the engine, particularly on cold mornings after a night of 20degrees, there is a knock in the engine that lasts 2-3 sconds, then goes away. The engine has been well maintained, with oil changes at 5,000 mile intervals.
Please tell me its not the valves! What could be the possible causes? Thanks for your help.
Mar 22, 2010 at 7:19 AM
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
Sounds like it may be the bottom of the engine not getting oil right away.Since this only happens in the cold, try using a lighter weight of oil, like maybe a 5w-20 or something like that, designed to circulate faster in cold weather.Higher weights like 10w-40 are better for hot weather when temps are up and you want a slightly thicker oil. Also be sure you are using the correct, high quality filter
Mar 23, 2010 at 7:34 AM
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