Question about Oldsmobile Silhouette
More of a mechanics job. Going internal on this job and very easy to mess something up. But if you want to try it, you have to remove everything from top of motor and get down to head gaskets. just flat pieces of metal around where your spark plugs go in. cheap part just expensive labor.
Posted on Jul 11, 2013
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Posted on Jan 02, 2017
SOURCE: blown head gasket
I would change both, as well as use new head bolts. Make sure your heads are not warped or cracked, especially the one that is leaking. There may not be any need to change the head if it is not cracked. These are prone to blowing a gasket especially after 150K miles or so. It will not cost a huge additional amount to change both head gaskets since the engine will have to be disassembled down to the heads anyway. Hope this helps you, Rick
Posted on Apr 18, 2009
This is basicly a very time consuming job rather than a physically hard one to complete. In order to replace the gasket you must remove the intake plenum,throttle body, and misc. vacuum hoses. The wiring harness connections must also be disconnected. Finally the intake manifold is exposed. The bolts holding the manifold to the block are removed exposing the leaking gasket. After removing the push rods and placing them in the correct order to be replaced the gasket and sealants can be removed. Finally replace everything in reverse order. Be sure to consult a GM manual for correct bolt torch specs. The correct specs for the manifold bolts usually come with the gasket. Make sure to change your oil a few times after this job in case any coolant entered the block. Also,change the thermostat and the oil seal on the distributor half shaft cap while you have everything off. Good Luck
Posted on May 12, 2009
if its a metal squealing noise u may have your rocker arms over torqued. the torque for those is 168 in/lbs. then another 30 degrees.
Posted on Jun 01, 2009
Never have seen blown headgaskets on a 3800 engine. Buick dealer parts guy over 20 years. You need a new upper intake manifold as it has leaked coolant into the combustion chamber. Also new plugs as you will have to remove them to get the coolant out. Common problem .
Posted on Apr 20, 2010
SOURCE: i have a 98 Oldsmobile
get a manual and read up on it, head gasket is involved work, should take a couple days, the head will have to go to a machine shop, you will need a gasket kit, and new hardware, also special tools etc, do not attempt if yhou are not sure
Posted on Dec 01, 2010
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