At 8:24 PM -0400 6/24/01, Denise Thorpe wrote:
>Hi DenverD,
>
>
>
>
>
>For instance, the rocker shafts wear badly. With the valve cover off,
>pull a rocker sideways against the spring so that it's not riding where it
>was. If the rocker shaft is worn, it will have ridges if not serious
>grooves. Last time I replaced one it was $20 and it went in without much
>fuss. The brass bushings in the rocker arms wear too, and you can replace
>them (don't forget the oil holes!), but usually replacing the rocker
>shaft takes
>care of the problem.
>
>
>
>Also, the faces of the rocker arms wear along with the tops of the valve
>stems. If they're worn, your feeler gauge is measuring the distance
>between the outside edges of the rocker arm face where it's not worn, and the
>top of the valve. But there's more clearance where the face of the rocker
>arm is worn. The clue for this one is when your feeler gauge can't slide
>smoothly and comes out all scratched. You can take your valve train all
>apart, have the rocker arms surfaced and rebushed, and put it all
>back together
>with a new rocker shaft. Or you can just keep adjusting the valves tighter
>until the noise gets down to the sound of a sewing machine, which is
>normal. But only do this if you know that it's just rocker arm wear
>because you don't want your valves too tight.
>
>
>
>How'd I do?
>
>
>
>Denise
>--- Denise Thorpe
>
Great! I just got back from a little drive with friends. We drove
from the Lincoln-Omaha area through Iowa, Wisconsin, Michigan,
Canada, New York, Pennsylvania, Ohio, Illinoise, back across Iowa,
and home. I developed a bit of valve noise along the way. Checked the
valves and found all in spec. But I got one scratched feeler gauge
and found a grooved rocker. Time to go through the valve train.
OBTW, the A ran perfectly, except for Blowing the top off of a new
Lucas Sport coil 330 miles into the drive. I reinstalled the old
Bosch Blue and had no trouble the rest of the trip. Three tries in 3
years and I have yet to get more than 500 miles out of a Lucas Sport
Coil. All of the system is as it should be. Makes me wonder.
--
Bob Shaw
Check out Shaw's Garage at http://www.mlcltd.com/shawsgarage/
My British Car is NOT leaky - it's merely marking its territory.
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