Re: Unidentified engine noise?

Posted by HH56 On 2009/3/26 19:52:26

The click-click couldn't possibly be a valve or lifter could it? That might be happening from sitting so long.

The only vacuum under the dash is on the wiper switch. If the 2 hoses are hooked up backward, there will be a hiss when the speed or arc lever is at one end of travel and quits when moved a bit. Connected properly, no hiss in any position.

The direct drive clutches are known to groan when going into position but that's only when the engagement is made. Letting off on gas slightly when "shift" is made lessens that & it quits when in full contact under pressure.

Low on trans fluid or a sticking valve results in a buzzing noise from transmission. Changes frequency a bit with engine speed when trans oil pressure increases or decreases.

Additives might help but will let others mention their favorites.