Stuck intake valve ...really???
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Launching!
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From: the shit hole of Albuquerque, New Mexico
Stuck intake valve ...really??? Well crap, i went to fire up my 00Z this evening and upon cranking it, it sputtered, wouldn't start and made a unplesant noise. I recently put in a push rod and figured maybe I didn't tighten up the rocker and it backed out. Well when I pulled the valve cover and check out the rockers, I discovered a loose one and upon further inspection discovered #3 intake valve stuck open! 
I was driving it Sunday night without any problems now this, WTF? I thought maybe something was jammed in the intake port and intake valve so I pulled the intake manifold and found nothing. I tapped on the valve spring with a rubber mallet and the valve move somewhat back to close but it is stuck with what looks like a seized valve guide. Now I am irritated to say the least, I wanted to enjoy the car a little longer while I save up some $$ and build up a performance engine. Now its going to sit for awhile if I don't sell it before then, lol...
*Sigh*, now I remember why I quit working on cars for a living.
I was driving it Sunday night without any problems now this, WTF? I thought maybe something was jammed in the intake port and intake valve so I pulled the intake manifold and found nothing. I tapped on the valve spring with a rubber mallet and the valve move somewhat back to close but it is stuck with what looks like a seized valve guide. Now I am irritated to say the least, I wanted to enjoy the car a little longer while I save up some $$ and build up a performance engine. Now its going to sit for awhile if I don't sell it before then, lol...
*Sigh*, now I remember why I quit working on cars for a living.
Last edited by Tall Guy; Jul 22, 2012 at 12:57 PM.
Thread Starter
Launching!
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From: the shit hole of Albuquerque, New Mexico
TECH Fanatic
Joined: Nov 2001
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From: KS
I've seen valve stems go curved after an over rev. Not just the head bending on the valve. This can cause the valve to seize. A valve is cheap. If you do the work you should be able to fix it for $100.
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Was the pushrod you replaced on the valve that's stuck open? If so how did the rocker arm feel when you tightened it down on that cylinder?
If it's just stuck and not bent there's ways to fix it without pulling the head.
If it's just stuck and not bent there's ways to fix it without pulling the head.
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Launching!
iTrader: (1)
Joined: Jul 2004
Posts: 251
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From: the shit hole of Albuquerque, New Mexico
I'm already starting to save up for the engine I planned on putting in it. I figure this motor is probably on it's last leg anyway.
First off are you sure the valve is stuck and the valve spring isn't broken?
If it's just stuck take the valve spring off and put a drill on top of the valve. Spray PB blaster or some other good spray lube down the valve guide really well. Spin the drill motor slowly working the valve up and down. Keep spraying the lube down the guide. You don't want to valve or the guide to get to hot. After a while the valve should move freely up and down. Make sure you pressurize the cylinder before you take the drill off so the valve doesn't fall down. I've done this several times and have had good luck with it.
If it's just stuck take the valve spring off and put a drill on top of the valve. Spray PB blaster or some other good spray lube down the valve guide really well. Spin the drill motor slowly working the valve up and down. Keep spraying the lube down the guide. You don't want to valve or the guide to get to hot. After a while the valve should move freely up and down. Make sure you pressurize the cylinder before you take the drill off so the valve doesn't fall down. I've done this several times and have had good luck with it.
