Re: about to give up trying to find the miss - -feedback

Posted by Bob M on May 16, 2001 at 19:11:59 from (66.66.72.246):

In Reply to: about to give up trying to find the miss - -feedback posted by Gene on May 16, 2001 at 18:16:06:

Gene - Your vacuum readings are about right - including the momentary drop to 0 on acceleration and run up to 25" on deceleration. So it sounds as if your intake valves are most likely set and working OK. A sticking exhaust valve however would not be detected by a vacuum gage, so the miss still COULD be an exhaust valve-related problem.

One more suggestion: Remove the valve cover and watch the exhaust valve rotators (I presume that motor has 'em). See how long it takes each rotator to turn it's valve 1 full turn, and then if that coincides with time between "pops". If so you might have a slightly bent stem on one exhaust valve and it hangs when in a certain spot in it's rotation. It's a long shot, but at this point worth at least a look.

Or maybe the popping is actually a "feature" of this as you suggest (just kidding!) ...Bob M

Follow Ups:

• Re: Re: about to give up trying to find the miss - -feedback bg 06:21:45 05/17/01 (0)
• Re: Re: about to give up trying to find the miss - -feedback Gene 21:50:45 05/16/01 (0)

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