Pietenpol-List: Hydraulic units
Posted: Wed Jan 16, 2002 9:10 pm
Original Posted By: "Gary McNeel, Jr."
Subject: Pietenpol-List: Hydraulic unitsHi group,I spent some time this evening trying to figure out the lifters a little more. Chris I agree with you in that I think that is where the problem is. I can lift the rocker arm off of the valve and push the oil out of the lifter on all but one valve (exhaust). It does not move at all. The others all have the .030 to .110 clearance. When I first pull the engine through it has good feeling compression on all cylinders. As soon as I push that particular valve in and let it come back out, then pull the prop through again I have absolutely no compression in that cylinder. After a half hour or so I pull the prop through and I have good compression again. The thing that gets me the most is that it ran just fine before, so I would think the push rod in that particular one is ok. That makes me think that maybe there is dirt or something causing the hydaulic unit to stick. ????Don E.________________________________________________________________________________Date: Wed, 16 Jan 2002 22:52:00 -0600
Subject: Pietenpol-List: Hydraulic unitsHi group,I spent some time this evening trying to figure out the lifters a little more. Chris I agree with you in that I think that is where the problem is. I can lift the rocker arm off of the valve and push the oil out of the lifter on all but one valve (exhaust). It does not move at all. The others all have the .030 to .110 clearance. When I first pull the engine through it has good feeling compression on all cylinders. As soon as I push that particular valve in and let it come back out, then pull the prop through again I have absolutely no compression in that cylinder. After a half hour or so I pull the prop through and I have good compression again. The thing that gets me the most is that it ran just fine before, so I would think the push rod in that particular one is ok. That makes me think that maybe there is dirt or something causing the hydaulic unit to stick. ????Don E.________________________________________________________________________________Date: Wed, 16 Jan 2002 22:52:00 -0600