This is a 460 big Block Ford from 1970. I thought it was a stuck lifter causing my pushrod to bend, but it is not, the intake valve is stuck (spring almost completey compressed). Any suggestions for freeing? I am tapping on the valve stem with a mallet, I am also trying to pry the spring up. I have it soaking in penetrating oil right now. Anyway of doing anything through the spark plug hole?
2007-09-21 07:30:04 · 6 answers · asked by Paul 1 in Cars & Transportation ➔ Maintenance & Repairs
Honestly, the best thing is to do is to pull of the head and check out what is causing the valve to stick closed.
With the head off, you can remove the valve spring with a valve spring compressor, and see what's causing the valve to stick.
2007-09-21 07:40:36 · answer #1 · answered by hsueh010 7 · 2⤊ 0⤋
I would be looking more into timing, what are the chances all the valves are stuck to provide no compression?Highly unlikely also for fun try doing a wet compression test to make sure the compression rings are not a cause.Not sure if bad heads are common with those as well , gl
2016-05-20 02:15:57 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Grab the top of the spring retainer with a pair of vise grips and spin the valve while pulling upwards
2007-09-21 07:39:03 · answer #3 · answered by Anonymous · 0⤊ 1⤋
Take it apart, the valve is bent and trying to pull it up will just damage the valve guide.
2007-09-21 09:39:26 · answer #4 · answered by beth 6 · 0⤊ 0⤋
If you can get atight fit you might try shooting compressed air in through the spark plug hole , otherwise you've got bases covered...
2007-09-21 07:40:36 · answer #5 · answered by Sophie B 7 · 0⤊ 0⤋
its bent..noway
if it stayed open when the piston came up ...its over
on the positive side .. i have pulled one head by just taking off one side of the intake and loosening the other side. just silicon the intake area on the side you removed when you go back together. saves pulling the entire intake manifold
2007-09-21 09:23:23 · answer #6 · answered by Anonymous · 0⤊ 0⤋