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Lifter adjustment - Lumina Chevrolet Cars & Trucks

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Cover OFF Eng Running Turn Rocker nut Clockwise VERY SLOW till Missfire then Back off 1/4 turn Repeat On ALL this is the Long time Way for GM Products Messy but works gota Have A GOOD EAR ON IT hope it Helps

Posted on Jan 16, 2009

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i believe that the lifters are hydraulic, oil filled, there is no adjustment.

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Does it have adjustable lifters


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Adjust valve tappets on flat head engine


I'd say that it all depends upon whether or not you have adjustable lifters. All flatheads have solid lifters, but most of the older (pre-50's) flatheads had non-adjustable lifters. Elimination of valve lash was accomplished by welding a glob of metal on the top of the valve stem and grinding it down to the required height. In the 50's, adjustable lifters were introduced, but it seems that at the same time, manufacturers increased the weight of the valves (thicker stem walls or solid rather than hollow stems). If you have adjustable lifters, try .008 on the intakes and .016 on the exhaust.

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Hydraulic valve adjustment


The lifters are not supposed to be adjusted.
Each lifter is a small "engine" itself.
They are supposed to be self-adjusting (this was changed way back in the 1950's).
If you are determined to adjust them, you will need to contact a place that builds race car engines, because there are procedures race cars use that adjust them.
Oh yes, you can also replace hydraulic lifters with solid lifters.
Some race cars do, and that is because, at really high RPM's, lifters can :"float", causing the engine to "top out" and not go any faster. I had that happen on a car back in the 1970's.
Be blessed.

Mar 18, 2013 | 1995 Chevrolet K1500

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Lifters sound loud on 2011 Ultra Classic


This car has hydraulic lifters( tappets} therefore should not adjustment, you probably have a bad or weak lifter. But, in any case you have to remove the valve covers to make the adjustment. You will see the adjustable bolt on the rocker arm. rotate the engine until the valve is all the way to the top, [no tension on the valve spring] then place a feeler Gage in between the rocker arm and the valve stem, adjust the rocker arm until the feeler Gage is snug but not tight. Do this with each valve. Check the book for the correct Gage to use but I think it is a .018.

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1 Answer

1992 nissan stanza my lifters need replacement or to be adjusted how can I adjust them. I just replaced the battery and now at the store and my car wont turn over is a problem with the lifters or the...


The lifters have nothing to do with the battery being changed. They are hydraulic lifters so there's no way to adjust them. Check your starter if the engine won't turn over.

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1 Answer

I have to adjust valve clearance on my ford 110 engine from 1994. year. Can you tell me right clearance of inlet valves and inlet valves


What engine do you have (size)? Valve adjustment is generally a thing of the past after the introduction of hydraulic lifters (no adjustment). In 1994 your engine should have hydraulic lifters and are not adjustable. Is this a high performance engine? New camshaft, lifter, and rocker set that are adjustable?

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Sorry but there is no valve adjustment with hydraulic lifters - can turn the lifter upside down fill with oil - let sit for a while and then tap on the lifters to see if they make noise - if noisy replace.  Camshaft may be worn on the lobes or may have jumped timing if belt.

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Do the valves need periodic adjustments in a 1999 Chevy suburban and how many valves per cylinder


The valves never need adjusted, .Do to hydraulic lifters and zero clearance.The rocker arms are torqued to 35 ftlbs.So you never have to worry about it.If there is a noise have your lifters checked:)

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