AS the title suggests, how the hell do you get carbon deposits off the inlet/exhaust valves of a VERY high milage engine without removing the head to scrat them off without the bits falling in the combustion chamber!
my valves are in dire need of a clean and i dont wanna be taking the head off at this moment in time, are there any products on the market that ACTUALLY WORK???
discuss



mines like the left hand valve... maybe worse... n thats the INLET VALVES not the checked the exhaust valves yet???????

 

Don't think you can - you need to take them out to do it properly. Some additives may burn some of the carbon off, but if you're going to do a job.........

 

a proper job will be taking the head off. you can try some of the wynn's or redex stuff but ultimately the best way to do it is to do it properly

 

ohhh bums!

 

i tried wynns gold treatment in mine, not that they were that badly coked up i dont think but you could have a try of that. will cost you Ł12 to find out though.

 

How do you know they are like this without the head off?

 

Mine weren't quite as bad as that pic but were really built up. I would suggest doing it properly as it took me hell of a long time to do it. I wouldnt imagine a cheap bottle of chemicals would have done hard the work i did on mine

 

Thats a bloody good point LOL

 

looking down the inlet with the manifold off with the help of a light and sticking my finger down onto the closed valves lol, they are really bad.
oh gay i didnt wanna take the head off :@

 

its well worth doing mate honestly. Took me a good couple of hours to do it 100%. They are like new now. I'm all up for the odd short cut but really wouldnt for this !

 

why dont you want to take head off?

 

Head off is the only way!

May i suggest a pillar drill and a sharp metal edge to clean the majority of carbon off then wet and dry to finish. Works a treat every time.

 

dont really want head off because its my daily driver lol crapcakes

 

If it's a pinto it will be done in a day easy.
I use a bench grinder with a wire wheel is best, for a lazy git like me anyway, just hold on tight to the valve as they hurt when they hit you in the head.
tabetha

 

bench grinder with wire wheel is the way to get rid of that
takes a while mind

then don't forget you've got to lap the valves back in again