Cylindern head of bmw e36 318 1994

V8 BMW engine 4.4L and 4.8L have a common problem in drying after burning the valve steam seals in cylinder head, witch cause internal oil leak from the valves to the top of the pistons then the oil burns throw the exhaust valves explain the smoke from the tail pipe.
the issue will continue and will get worse with time until you replace the valve steam seals, $1500-$2500 mostly in labor, a BMW mechanic most have a special tool to do the job with out removing the cylinder heads, it's time consuming.

Hi, at the back of the seat you have 2 parts you have to take off
1) bottom pocket insert
2) and the insert that's at top of that witch is just below head rest.
3) once those 2 parts off you will see the head rest and motor. Theirs two pins, one on each side of the chrome arms. Pull pins out and head rest slides.

at the top of the manifold. three wires going to it. usually held in by 2 phillips head screws, sometime allen head.

Remove plastic caps at top of engine cover and you will find two 10 mm nuts or bolts. Remove those and you will then see the coils on top of the cylinder head. Gently folds open using a small flat blade screwdriver the wire connector at the top of each of the coils. Once the connector is released then using a larger Phillips screwdriver put it in the opening of the connector to use as a handle and pull the coils off the top of each plug. To install just press down the coil firmly onto the plugs.

Four 8mm screws respectively hold in the head lamp. Two located right on top of the head lamp and two more below. Using a magnetic 8mm socket with an extension helps. Then the lower trim below the head lamp has to be pulled out, those are held in by a plastic tang on a plastic hook. Wiggle and see if you can remove it, if not then I'm afraid you'll have to drop your bumper, or at least one side of it in order to pull it out.

I would tape up the face/lenses of the head lamp before moving it around. Last thing you want are scratches on it.

If the key will not turn the lock cylinder and you have removed the switch, you probably need a new cylinder.

sounds like there is a sensor not plugged in or has a blown fuse or something simple.. hope the timing was correct or you will be doing that cylinder head all over again as it will have bent all the valves in the head and that has caused your no start... do you have compression in the cylinders?

could be 1 of 2 problems, # 1 and the most likely is a burned valve.
# 2 the intake lobe on the cam has worn off.
This will be a costly repair, if the engine has high miles i would replace the engine with a low mileage engine from a salvage yard.

for the best solution of your problem visit this site
1997 BMW 318is 328i Electrical Troubleshooting Manual ETM

Sounds like the garage didn't do something correctly.

Apparently heads are a serious problem for BMW.

http://www.usautoparts.net/bmw/parts/bmw-head-gasket-world.htm

Here's a brief history and an unofficial description of BMW's position on their head problems:

http://www.unofficialbmw.com/all/engine/all_m42_profile_gasket_faq.html

Here's a step-by-step on the Timing Case ProfileGasket (aka, the head gasket) replacement for reference so you can see what should have been done:

http://www.pelicanparts.com/bmw/techarticles/101-Projects-17-Head-Gasket/101-Projects-17-Head-Gasket.htm

However, the good news is that the difficulty starting and the fuel leak may be just the result of a clumsy re-assembly in fuel delivery bar. Check out:

http://forum.ih8mud.com/80-series-tech/285535-fixed-head-gasket-but-now-have-fuel-leak.html

Now doesn't replacing a few O-rings sound better than having to tear the head off again? :-)