How do I adjust the valves on a 1984 GMC Sierra with a 250 straight 6 engine, automatic trans?
Jun 17, 2011 at 12:40 PM
Adjust valves
GRAYTA
- MEMBER
- 13 POSTS
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You can go straight down the cylinders-loosen it till it clatters then tighten it till it stops and then 1 full turn or you can follow the firing order-which ever is clever
Jun 17, 2011 at 12:45 PM
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