What should I do if my intake valve fails?
What should I do if my intake valve fails?
To check whether the ring (s) are seized, with to piston at the top of the bore, try and move the piston from front to back. It won’t move much, a few thousands of an inch. If it moves, you’re OK. The other thing you should do is run the piston down to the bottom of the bore and check for cylinder wall damage.
What kind of seat does a PM valve seat use?
One aftermarket PM valve seat manufacturer has found using different seat materials; processes and designs that have resulted in improved seat insert retention in the cylinder head for this engine. An additional tempering process has been implemented, which eliminates the embrittleness commonly found in PM [powdered metal] valve seats.
What causes the valve seat to come out of the engine?
This is has been a prone problem with the Chrysler Dodge Jeep & Mitsubishi 4.7L engine where the valve seat comes out of the cylinder head. This could be more prone to happen if the engine has been overheated.
Do you have to replace the piston on an intake valve?
At first glance you have to replace the piston (this one’s bad), maybe. The cosmetic damage is irrelevant. If there are no pieces of the seat embedded (can cause hot spots and you can pick them out) and the piston floats you’re OK.
To check whether the ring (s) are seized, with to piston at the top of the bore, try and move the piston from front to back. It won’t move much, a few thousands of an inch. If it moves, you’re OK. The other thing you should do is run the piston down to the bottom of the bore and check for cylinder wall damage.
One aftermarket PM valve seat manufacturer has found using different seat materials; processes and designs that have resulted in improved seat insert retention in the cylinder head for this engine. An additional tempering process has been implemented, which eliminates the embrittleness commonly found in PM [powdered metal] valve seats.
This is has been a prone problem with the Chrysler Dodge Jeep & Mitsubishi 4.7L engine where the valve seat comes out of the cylinder head. This could be more prone to happen if the engine has been overheated.
At first glance you have to replace the piston (this one’s bad), maybe. The cosmetic damage is irrelevant. If there are no pieces of the seat embedded (can cause hot spots and you can pick them out) and the piston floats you’re OK.
