Re: Valve Bay Surprise

Posted by Packard Don On 2016/1/6 13:57:09

You probably have it running by now but hydraulic valves also need a one-time adjustment that requires a special tool, especially if the seats and valves are reground, although few people ever do it. I've also had good results without doing it but better when I did and the valves were quieter.

This may be documented in one of the shop manuals or Service Counselors but the gauge is double-ended and sits down into the hole where the hydraulic lifter insert usually installs. I don't recall the details but from memory, basically you measure the gap first using one end of the gauge, then again using the other and the proper gap should be somewhere in between. Adjusting is another matter as it requires either grinding the valve stem (if too long) or the seat (if too short). I have one of the gauges at my Oregon shop and will take a photo the next time I'm there but I doubt I still have the specifications for making one.