When my spark plugs get wet, it won't start and after taking the breather apart we discovered anti freeze in it, but there is nothing leaking any place else!!!
For now you know the Dex-Cool ate the intake gaskets,
so off with the intake
There are newer gasket materials out for that issue &
I would pick a different coolant
If you read ALL the coolant bottle labels, you can find, in any
store,they ALL are Dex-Cool chemicals
There is no more old green coolant & NO one size fits all
Prestone is just dex-cool & lots of non-sense on the labeling
I would use Zerex G-05 even though it is for ford & chry & others
Still have the same engine block,heads,heater parts,radiators, on all
vehicles,so it won't hurt anything, if you use ONLY distilled water &
coolant.
Do a cylinder leak down test first, to confirm proper valve
sealing & hopefully good head gaskets
Going to need new oxygen sensors, once the repairs are made.
I would pull the injectors & mail away for Ultra-Sonic Cleaning
They are 16 plus years old & no other cleaning will do a thing.
They are too old to use & not be tested & cleaned off vehicle
SOURCE: lower intake manifold gasket leaking 02 Olds Silhouette
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
SOURCE: Leak near the intake manifold
if it is manifold you are inspecting then get a can of spray lubricant,< popular brand not highly flamable > and spray sparingly around manifold to find source of leak. Try an area and wait to see if there is a idle change,<if leak is present idle will change>. Move around intake perimeter doing this until you find problem.
SOURCE: I have been having problems with my car leaking
I AM LOOKING AT THE RADIATOR CORE LEAKING OR ITS PLASTIC SIDE TANKS.CHECK WATER PUMP WEEP HOLE IT WILL LEAK OUT COOLANT WHEN PUMP GOES BAD IT WILL CAUSE OVERHEATING.CHECK THE CYLINDER BLOCK CORE PLUGS SOMETIMES THEY WILL GO BAD AND LEAK OUT COOLANT.
SOURCE: how do you know if
You would have to remove the timing cover to verify valve timing. Do you know why it ran hot? Why did you change the intake gasket?
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