two things.. were the lifters well pumped up when you did the adjustment ? they have to be for the standard method. I assume you did them with each cylinder on compression ., which is easy to tell from distributor rotor position. and ...I think the current wisdom is 1/2 turn, not 1 to 2. On 5/19/2012 11:07 AM, Dan Barrett wrote: > Folks: > > I'm adjusting the valves on my ten year old Boston Bob 2.1 with about > 60,000 mi on it. I followed Ben's guide > (http://benplace.com/1700valves.htm) and tightened the adjusting > screws 1-2 turns in past zero lash. This helped a lot, adding 20lbs. > of compression on cylinders 1 and 2, making the engine easier to > start, and idling closer to 900 rpm than it had been. > > But, two problems: first, cylinders 3 and 4 lost about 15lbs. of > compression each. Second, I still have a lot of valvetrain noise from > both sides of the engine. > > Do the results on cylinders 3 and 4 mean that I've moved the adjusting > screws too far in and need to back out towards zero lash? And is the > valvetrain noise just the way things are with a broken-in boxer? > > Best, > d. > |
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