Advice / pointers on replacing valve seal

-
Bewy said:
Post 23. That is why you have the piston at or near TDC, in case the valve drops.
Click to expand...
Ahhh I get it now, so if it drops the piston will catch it and it won't just fall in the cylinder
 
Stuff the rope in, turn the crank until you can't.. as I noted. The rope fills the space between piston top and valve head and holds the valve up tight. I did all 16, none dropped even a titch... you know what a titch is correct.. :D

Air pressure method might be great, until someone kicks your air line off..
 
I have tried the air pressure route and putting the piston at TDC but several times the air pressure pushed the piston down. I guess it was a loose engine and maybe I wasn't perfectly on TDC. That's why I prefer the rope method.
 
Maybe I'm just lucky, but I have done this many times without dropping a valve. Remove valve covers, rocker shafts and one plug at a time for the air input and leave the air on while removing the retainers, springs and dampers. reinstall as noted above. Now install the plug and go to the next one. This will help to keep the crank from rotating and dropping the valve into the cylinder. Don't like the rope idea, because if the valve should move it can drag some trash onto the seats and cause a pit. As others stated, do them all.
 
Seems to be unanimous that I should replace all while I have the rockers off. . Guess I'll see how easy the first one goes & hopefully I'll get some confidence built up
 
Go into the job with positive thinking. Then u will succeed. If u go in thinking I can’t do this or I don’t want to do this failure is imminent. Just take your time and go slow and steady. Kim
 
oldkimmer said:
Go into the job with positive thinking. Then u will succeed. If u go in thinking I can’t do this or I don’t want to do this failure is imminent. Just take your time and go slow and steady. Kim
Click to expand...
Thanks
 
oldkimmer said:
Go into the job with positive thinking. Then u will succeed. If u go in thinking I can’t do this or I don’t want to do this failure is imminent. Just take your time and go slow and steady. Kim
Click to expand...
Just go slow with the spring compressor and if you notice the keepers are stuck on the valve stem, back off and take a socket, place it over the valve stem and give it a firm tap. That should loosen the keepers. Just keep in your mind, if the keepers are stuck, the valve will not drop and if you can remove the keepers the valve will not drop as long as you have your air pressure applied. Good luck!!!
 
So I guess I got my first taste of oil pushing past the seal today. As soon as I pulled out the car started backfiring and running very poorly. Just pulled the #3 plug ehich is supposedly the culprit & kinda surprised how it looks. It's defintly looks beat up with lots of black carbon but I was expecting to see more of a wet plug. I did pull it a good 5 hours later though
20211226_193303.jpg
20211226_193317.jpg
 
Might want to do a compression test before you change out the seal.
 
oldkimmer said:
You got more than a seal problem. Kim
Click to expand...
Please explain, what are you suspecting from the plug? . . .I was just thinking running rich / maybe to much tooling around and the car is loading up
 
I would take all the plugs out. Keep track of what cylinder they came out of and compare them to each other. Since you already have all the plugs out it would be a good time to do a compression test. Write down what each cylinder has and compare to the spark plugs. Hopefully all will be good.
 
92b said:
I would take all the plugs out. Keep track of what cylinder they came out of and compare them to each other. Since you already have all the plugs out it would be a good time to do a compression test. Write down what each cylinder has and compare to the spark plugs. Hopefully all will be good.
Click to expand...
100% good idea
 
You must log in or register to reply here.
-

Back
Top