I have the compression gauge, but then realized that getting to the plugs was another story, I was thinking of taking the front wheel off, then taking the whole underpart above the wheel off, to get a straight shot at the plugs. Is there anyother easy ways to do this? When i get to the plugs, what would be a good reading at a 7,000+ altitude? Kevin Pacheco 71 Imperial _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp.