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The inside cover seal on your Valve cover gasket needs replacing. It's an easy fix. Just be sure to mop up the oil around the spark plugs. It's a good time to change your plugs also.
Remove the cowling on top of the engine block to expose the head, you should be able to see and follow the HT leads.
unscrew the two hex screws on the top of the engine block to remove the plastic cover hiding the spark plugs & boots then take it from there.
you can use ngk or Bosch it will perform very good, but please don't change the spark plugs when the engine is still hot because it will smoke
when do you change spark plugs
Remove cover on top of engine,pull plug wires straight up.The spark plugs will be down in a hole for each cylinder.You need a spark plug socket and a long extention to reach them.
Remove the the plastic cover on the valve cover, next remove the coil,or spark plug boot. Then you have access to the spark plugs. Make sure you gap your spark plugs,before you install them. If your not sure, it's wise to do them one at a time. After the replacement, do everything in reverse order.
Pull off the 3 plugs on top of the exhaust manifold. get a spark plug socket and whip em out. Wacky the new one in carefully making sure not to over tighten them
To change the spark plugs in a 1997 astro van do I have to change the spark plugs from the bottom of the engine/
The owners manual says .031, which is right for factory stock plugs. Using Autolite double platinums it's .044. Any less than .040 and your engine will misfire and set the malfunction light.
How to change the spark plugs