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Mazda Engine General \  How to replace valve seals?

How to replace valve seals?

Mazda Engine General Mazda Engine Mazda Tech
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replies 19
following 8
 
lost_b2200   +1y
I need to know how to replace the valve seals. I already have them bought and I have the adapter to put air in the cylinder to hold the valves up. But how do you take it all apart? Please help and thanks!
lost_b2200   +1y
*bump*

what spring compressor can be used while the head is on the block?
lost_b2200   +1y
Hey nevermind. Found this.
89b2200   +1y
To pry up the old seals, I found that a bent 10-inch needle nose pliers worked like a charm.
pont   +1y
and to drive them on a 1/2 inch deep well socket worked really good just keep it level to the valve guide
lost_b2200   +1y
Sweet. Thanks to both of you for those pointers! While I'm at it I'm going to test compression before & after replacing the seals. Thanks again.
fantomrush   +1y
Seals wont make a difference in a compression test. A compression test gives you the pressure in the combustion chanber while the valves are closed. If that number is low than it means worn rings, bad/bent valves, or worn valve seats. So the valve seals wont affect those numbers.
lost_b2200   +1y
Well I still need to do one to check the rings

good point on that
lost_b2200   +1y
And a $20 compression test kit from O'Reilys gives me the air hose adapter! Advanced wanted $40 for the same kit. Well the gauge was bigger, but all the same fittings etc. So the next dry day I get this problem will be fixed.
lost_b2200   +1y
Today was that better day I've been looking for. Got the new seals put on the valves! Yay