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What are the step by step instructions on how to change a head gasket with pictures on a 1988 Chevy s-10 with a 25 engine?
Wiki User
∙ 12y ago
First of all you have to take all the air intake system off. I would recommend disconnecting the battery before unplugging any sensors also. You have to pull off the exhaust manifold bolts which are 15 mm. I'm not exactly sure how many bolts there are. I would recommend leaving the intake manifold on and disconnecting the fuel lines instead of trying to unbolt the intake manifold separate....trust me it's easier I've had the head off of my 2.5 about 5 times. You have to disconnect the wires to the coil which are located underneath the intake manifold along with disconnecting some sensors to the throttle body etc...You have to pull the valve cover also which all should be 10mm. After you pull the valve cover off you loosen the rocker arm bolts which are 15 mm just enough to pull them aside and pull the pushrods out. Keep your pushrods in order in which they came out. After that you have to loosen the head bolts which I believe are 18 mm. I'm NoT a hundred percent sure because it's been awhile. I believe that's pretty much it besides taking the radiator hose loose from the thermostat housing on the head itself....
Wiki User
∙ 12y ago
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Need step-by-step instructions to change a head gasket in a 1994 Chevy S-10 2.2L?
you can find them on autozone.com, in the repair guides section,complete with pictures
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