anybody done this before, well, this is the first time I have torn into the motor on my 4runr. As many of you know, I have dubbed this 4runr the misquito killa because of the choking smoke it produces.
Well yesterday I did a compression test and found the the pressure was right at where Chiltons says it should be so the next step is to replace the valve seals.
The process sounds easy enough.
step 1, remove valve cover and any accessories (vacume lines and sensors etc) make sure you mark them so they go back where they came from.
step 2, remove 10 head bolts in a cross pattern as per chiltons (or FSM if you have it) states.
step 3. remove spark plugs
step3.5 remove the rocker arm carrier. this should come out with a little nudging, I used a crow bar and light pressure to loosen it.
step 4, place air hose (I bought the adapter from O o o Oreiles) in spark plug hole.
step 5, using valve spring clamp, compress valve spring enough to allow you to remove the keepers. They are two 1/2 circles that hold the valve spring in place.
step 6. remove spring and then valve seal. DO NOT TOUCH THE VALVE at this point because all that is holding it up is air. if you do, the valve will fall to the piston and you end up where I am. after a few choice words, remove the head following the instructions in the book and then continue swapping the valve seals until you get them all, there are 8 total on this engine.
reinstall everything in reverse order and see if the thing still smokes.
Now, I am at the point of having to fish the valve out before I remove the whole head. I don't know if I will be able to get it at all.
Well yesterday I did a compression test and found the the pressure was right at where Chiltons says it should be so the next step is to replace the valve seals.
The process sounds easy enough.
step 1, remove valve cover and any accessories (vacume lines and sensors etc) make sure you mark them so they go back where they came from.
step 2, remove 10 head bolts in a cross pattern as per chiltons (or FSM if you have it) states.
step 3. remove spark plugs
step3.5 remove the rocker arm carrier. this should come out with a little nudging, I used a crow bar and light pressure to loosen it.
step 4, place air hose (I bought the adapter from O o o Oreiles) in spark plug hole.
step 5, using valve spring clamp, compress valve spring enough to allow you to remove the keepers. They are two 1/2 circles that hold the valve spring in place.
step 6. remove spring and then valve seal. DO NOT TOUCH THE VALVE at this point because all that is holding it up is air. if you do, the valve will fall to the piston and you end up where I am. after a few choice words, remove the head following the instructions in the book and then continue swapping the valve seals until you get them all, there are 8 total on this engine.
reinstall everything in reverse order and see if the thing still smokes.
Now, I am at the point of having to fish the valve out before I remove the whole head. I don't know if I will be able to get it at all.