Adjust valves

GRAYTA

MEMBER
1984 GMC SIERRA
6 CYL
2WD
AUTOMATIC
108 MILES

How do I adjust the valves on a 1984 GMC Sierra with a 250 straight 6 engine, automatic trans?

Friday, June 17th, 2011 AT 7:40 PM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

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

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Adjust valves

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