Either weld or replace.
This condition is abnormal and possible fire risk. Manifolds are sealed and should not leak exhaust gases. Smoking specifically may indicate an oil and or fluid leak onto them which are burning.
The best way to fix an exhaust leak on a 1994 Caprice is to install new exhaust pipes where the leak is located. Exhaust leaks are dangerous and can cause carbon monoxide to build up in the passenger area of the vehicle.
You probably have an oil leak from your motor on to your exhaust system.
It would be best to get a new exhaust gasket.
BAD power brake booster are a vaccum leak at the booster.
Is it water or antifreeze ??? It is probley condensation. If it is cold outside were your at then this is what happens. The exhaust system is cold and when you start the engine the exhaust heat flowing through the cold exhaust pipes makes the exhaust sweat. And it looks like water is running out. Engine is running lean. Needs richen up. If it is antifreeze it will be smoking real white out of the exhaust. And that would mean a head gasket is leaking coolant into the piston cylinder. That is the most common problem with a antifreeze leak causing white smoke. I have seen intake manifolds leak coolant into the cylinder head ( runner ) but it is rare that happens. I don't think you have a problem.
sell your van the studs for the maniflold are going to break and you most likely will have to replace head Between the exhaust manifold and the head is the manifold gasket. Where the exhaust pipe connects to the exhaust manifold is a manifold doughnut gasket.
Yes, they can leak from the back of the intake near the top; run your hand back there to see if it is oily. I hope this helps you. Mark
more than likely not...you will be dumping alot of water to in the oil....it could be a exhaust manifold gasket
If it's glowing red you have a vaccum leak someplace, probably in the intake manifold or the engine is running lean on fuel or possibly too rich as the unburnt fuel is burning in the exhaust.
2 most obvious signs of exhaust leak are noise and smell of exhaust fumes
Do you have an exhaust leak? Do you happen to have have an exhaust leak or a damaged water pump bearing?