Loud noise frm engine area of 2002 Ford Focus

My friend's 2004 Focus was doing the same thing - especially loud when accelerating from a stop. When it reached stable speed, it got much quieter. We thought it was exhaust also, but couldn't find any cracks, gaps, or obvious leaks. We brought it to a garage, and they found a bad motor mount. When the engine was under load, it would torque (against either the frame or firewall) and make the loud, irritating noise. A new engine mount, and it sounds almost new again.

Open the hood and find out where that loud sound is coming from first. Make sure the fan is not bent or blades damaged.

If a vehicle is smoking then it is obviously burning oil, loud noises from bottom of engine usually indicate main bearing failure, but that wouldn't usually make smoke are you sure it is from bottom of engine. Sounds more likely to me that you have either valve or piston problems, a valve seal gone would result in smoke as oil leaking into Cylinder chamber would burn producing smoke. Piston ring failure would also produce smoke and most likely a significant loss of power with possible noises resulting from broken pieces of ring in the cylinder impacting on head, this may have also unseated a valve causing the smoke. To check ring or valve failure you need to do a compression test, to check for bearing failure I am afraid it will require inspection either by removing sump pan ( oil pan) and removing bearing covers to check for damage.Whatever the cause it sounds as if it may be quite expensive and age and condition of vehicle should be taken into account, after all with the cheap cars on ebay it may be more cost effective to cut your losses and replace the vehicle.

The ticking noise, if related to your engine would get faster and slower "with" your engines' RPM. If it isn't matching the engine then I would be wary of a possible wheel bearing getting ready to take you for the U-Turn of your life! Try pulling (very hard) on the top of the tire closest to that area to see if you can feel looseness or "play" ...cuz there shouldn't be any "play" or noises at all.

sounds like its not going completely in park...

Sounds like a vacuume leak, use some carb cleaner in a spray can and gently spray the engine. When you find the leak the engine will stumble, check in that area for the leak.

probably a tensioner or idler pulley...

A rubber cover.

this can be a serious problem, sounds like one of your engine valves, has the car overheated recently? if your valves bent, you need to take the engine apart hope i helped

water pump by teh sound of it seal ok but bearing going