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sticky valve

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BrisDubba Fahrvergnugen

877 posts · joined Oct 2005 ·

#694287
Okay - am still trying to fix the missing in the c/buggy. Started off by fixing all the exhaust leaks and that was done and still not running properly, popping and backfiring - so thought would check the valves and progress from there.

BUT

I checked No 1 inlet and that was fine, then found that No 1 exhaust valve is sticking and even with the adjuster screw removed I cannot get any blade through. I know that the exhaust valves tends to wear quicker than the inlets and run hotter etc but does anyone have any trick to unstick the valve.

I suspect that I will have to pull the motor, as it is fairly tight to take the head off. But thought someone might have a handy hint.

I was hoping to have it fixed for Dubs this weekend, but not likely if I have to pull the engine.

Any suggestions..

Cheers

Peter
VW Toys

64 Beetle - club car - Herbie
RSK 718 Porsche Spyder
76 Southern Cross Offroad racing buggy. "Manx Buggies"
77 Cobra Offroad racing buggy "RipOff"
68 Country Buggy KO200
64 Manx swb
70 Dual Cab kombi
74 Dual Cab kombi
74 Micro bus

grumble Son of Jim - Creator of Good

2,672 posts · joined Jun 2008 ·

#694289
If you have no clearance at all or adjustment I would guess that you have a receded valve seat or a valve stem stretching which shortly after becomes a dropped valve head causing untold damage.i suggest you pull the motor and find out which it is before demolition. Cheers Les

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#694295
I know that the exhaust valves tends to wear quicker than the inlets and run hotter etc but does anyone have any trick to unstick the valve.
Pull the engine to remove the cyclinder head no other way
I read it on FACEBOOK so it must be true


http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630


http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099


http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603


http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#694299
Not stuck valve.
Remove the head, most likely valve seat receeding.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

matara Custom Title Time!

1,342 posts · joined Aug 2002 ·

#694320
What are the symptoms of a sticking valve?

Thanks

Steve