If the valve can be pulled back level with the other valves, it's
unlikely it is bent.
If you can get your hands on an "air hold" - an air fitting that screws
into the spark plug hole and uses air pressure to hold the valves closed
- you can compress the spring and replace the keepers without tearing
the engine apart. You can make one with an old spark plug and a pipe
nipple and a little welding or soldering - or even JB Weld.
Turn the engine over so the valves are closed before applying pressure -
have the car in gear so the motor can't turn over. If there's no hissing
from the carb or muffler, the valve is still seating correctly. If not,
it's probably bent.
Was the engine making any rattling noises?
Chuck Kuecker
On 3/28/2013 4:59 PM, Dean Johnson wrote:
I've gone to the trouble of replacing my transaxel after having the
bug off the road for four years. I was commuting daily for about a
year before the tranny failed. (70 mi round trip)
So imagine my surprise to discover when adjusting the valves that one
of my valve stems is below the valve spring retainer. Its suppose to
stick above that so the rocker foot can push on it. This seems really
bad. Doesn't this mean my valve has been getting clobbered by the
piston? Doesn't this mean I have to pull the head and have it rebuilt,
if possible, or replaced.
Or is this the one time when something seems bad but really isn't?
I suppose I could take off the rocker arm to see if the valve stem is
ok, if the valve spring retainer keepers are anywhere to be seen. I
don't really have much more money or time to throw at this.
Please send me a miracle.
Oh, Its a '71 Super Beetle with about 30,000 miles on an 1915 cc
engine rebuilt by Strictly Foreign (circa 2000). I was running it with
a single 34pict jetted for the larger displacement.
Dean Johnson
Williamson, NY
p.s. to make sure my terminology makes sense,
valve stem: skinny end of valve sticking out towards the rocker assembly.
valve spring retainer: disk shaped metal with hole in the center for
valve stem. sits on top (out board really) of the spring
valve spring retainer keeper: This I can't see but I assume there are
two of this buggers around the valve stem that sit in a circular
groove around the end of the valve stem, they keep the valve stem from
doing what mine did, sneaking back towards the combustion chamber.
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