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The air compressor trick is needlessly complex and risky - if any part of the chain fails, you've dropped a valve. The rope trick works just as well and is more reliable - feed some rope into the spark plug hole, turn the crank until it stops, etc. I did both sides of my engine this way with no trouble.




Valid point! I did some valve work on a motor once...I'd hate to think what would have happened if the hose on the air compressor blew apart when I had the springs off!



Done it with the air compressor 100's of times. Never even heard of that process failing. If your equipment is in that bad a shape, maybe you shouldn't be working on cars.



It's not about the quality of my equipment. it's about me having the luck that I do, and Murphy always seeming to be on "the other guy's side"

I'm the guy who does something a hundred times and never has a problem. never even imagined a problem could happen...then some wise guy comes along and says "you shouldn't do that, you might ____________" I respond with "meh, I've done it a hundred times and never had a problem" and at that exact moment, what I was just warned about happening, happens.





I have had the valve slip down enuff in the guide i could not get a hold of it to pull it back up.

and you got to remember to whack the retainer/spring to unlock it before your air trick. with the spring compressed,retainer stuck to valve tip,head on engine, air compressor holding valve up... thats before I droped the valve in the cyl.

after the retainer/spring was off. air holding the valve up, I lost it putting the plastic sleeve on the valve tip

someone spoke and it sliped right down below the guide.

I am a shadtree parts changer so I will use the shadtree rope in the cyl trick every time.