Mufflers and Tailpipes

sounds like you use a bad mechanic a good mechanic would replace a cracked exhaust manifold to start with if you can smell gas,there is obvioulsy a leak in the fuel system. this needs to be found as it is a fire hazard

You have a blown head gasket. You are also going through some anti freeze. Check that water. You may also see some white filn in your oil. Also water! Stop driving it until the head is repaired.

First thing is to check the timing belt if it is a 4 cylinder model. These are notorious for a slapping or clunking noise as the belt gets a bit loose. This is esp true if the belt has been changed as the spring loaded belt tensioner is anstalled at that time(not used from the factory). Once again I cannot emphasize enough that people need to buy a good Manual for their car as it answers most of their questions.

white smoke is coming from my exhaust why?

Use fuel system cleaner, if it doesn't help you could have a problem with the cadalidic converter or the head gasket.

This could be because you have coolant burning inside the combustion chamber(s). If you are leaking coolant, but cannot find the leak i.e. no puddles, then it is probable that your head gasket is leaking, your head is cracked, or both. If you are handy with tools, rent/buy a compression tester. If you have low compression in two adjacent cylinders, you probably have a blown head gasket. Not an easy fix. Sorry to say that.

You may be able to get a solution from AAP that can fix the head gasket leaks. I do not know what the brand name is but they say it works. Just drain the coolant, rerun the solution through, flush and add fresh coolant. I have never tried that though.

Good luck.

Your oil is probably leaking.

If the car is old, then it's likely to be scrap!

VTC (cam sensor) requires to be changed and your valve (rocker) cover seals plus the seals that are located around the spark plugs in the rocker cover.

White smoke coming out of the exhaust is a symptom of a blown head gasket. You need to have this repaired ASAP. In the mean time stop driving this vehicle or you will destroy this engine if the head gaske is blown. Sounds like you have more than one problem.

Your breath as it is warmer than air around you will look like smoke

A little more description would be nice.. I'm going to go out on a limb and say it's one of the many vacuum hoses attached to the engine. I believe it could be the PCV (positive crankcase valve).

The normal combustion product of gas and oxygen is water (in the form of vapor because it is hot) and carbon dioxide. When you shut off a running car, water vapor in the air condenses to water as the muffler cools down. When you start the car, the exhaust gasses push the now liquid water out the back.

it can mean one of two things it could be that the carburetor is feeding it too much fuel to air mixture or it could be that it just has carbon built up usually it will build up carbon if it idles for long periods of time you can fix this by just doing your basic tune up

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.

make sure your fan control module and fan motor are working correctly.

no fan can cause a/c to over pressure

clamor, cacophony, rowdy, noisy, booming, roaring,

If you smell fumes, you should get out of the room, car, or house. Opening windows will help get rid of the smell.

Use an exhaust made for an LT1 engine the blocks are identical it is the insides that is different. Will bolt right on.

You may be burning oil.

EDIT: This is a very vague question. Did you recently get exhaust work done? if not, you should first check to see if there are any lights on the dashboard that have recently come on. If not, check your spark plugs for wear. Any unburned fuel exiting the engine will pool in your catalytic converter and cause a chemical reaction to the platinum catalyst, which in turn will cause it to become VERY HOT. (when I say very hot, i mean White HOT.)

so, to follow up. Exhaust work will leave a burning smell from gasket sealer as it heats up for a couple of weeks following. If there are lights on the dashboard, it means that one of the O2 sensors has malfunctioned and you are not getting a correct mixture of oxygen and fuel in the engine for combustion. If there are no lights on and your spark plugs are worn and burned, it means that escaping unburned fuel on the exhaust stroke of the engine is causing the catalytic converter to become overheated. Other than that. I will need more information. Hope this helps.

yes.

water from the tail pipe usually means there is watered down gas in your tank and for the most part is normal at a couple of drips per min.

You need a head or intake gasket. Coolant is getting into engine. Head more likely.

no

free flow exhaust with reducing bends

Valve seals/guides, plugged oil drain holes in the head, PCV valve/line plugged/malfunctioning, etc. IF its WHITE it could b a blown head gasket-IF its BLACK it means there is 2 much FUEL getting 2 the engine & if its BLUE it COULD b valve stem seals OR piston rings or @ the WILDEST blocked oil return holes.

running too rich check the air filter could also be defective injectors

The main relay will give an check engine light to indicate that the electrical system is bad.