Engine/Transmission (1994 - 1998) 12 valve exhaust spring change

[zstroken]

ANy pointers on how to change these out?? Finding top dead center of each cylinder etc, etc.

 

[ScottLewis]

This is a cut and paste of another member's instructions.

"

You can pretty easily change them yourself if you just locate TDC for cylinder 1 via the timing pin or some other method. Find a chart that shows the firing order and each of the other 5 cylinders will be at their TDC at 120* of additional rotation (right fellow members?) from the previous cylinder. Start with #1 and change those valve springs. Then rotate foward 120* and change that set. 120* more and change those, and so on.



The rubber valve guide seal will generally provide enough friction to keep the valve from dropping unless you push on it. Valve lift on both intake and exhaust is a little under 1/2". So the piston at TDC is not much below that. If you're at TDC you shouldn't loose the valve if it does drop. If you do have a problem keeping it up to put the spring and keepers on, you can remove the injector and have a friend pressurize the cylinder with a compressor while you install the springs and keepers.



-Jay "

I found it through a search of prior threads



Dan

 

[biggy238]

That's what I was going to for mine in theory but I never came up with a way to designate 120* increments. Ball park it and the valves on that cylinder should be at crossover (unloaded).

 

[zstroken]

Well I got it done yesterday and today. Go to advance auto and buy the $20 puller, it worked awesome I had 3 other pullers there and this one was the ticket, springs never flew out accross the garage, would clear on #6 and everything. I ended up pulling the injectors to find the TDC's since I am installing a new pump at the same time.