EXCESIVE OIL BURNING - Cars & Trucks

Check the brake booster vacuum hose for a leak. This could cause the hard brake pedal and the idling issues both.

Blue smoke coming out of the exhaust indicates that oil is getting into the piston cylinder and being burned along with the gas. This could be a leaking head gasket, worn piston rings, or the wrong weight engine oil (viscosity too low). A leak down test will be needed to diagnose.
Have you checked your engine oil level?

Pull off the connection on one of your sensors to check that your bulb is not blown. Does she has the self diognosing plugs under the steering wheel area.?

pcv valve back flow. check pcv valve/replace

well if its not leaking i would say check the antifreeze for oil in it and if there isnt any then i would say your piston rings are going bad these are all possibilities if you have high miles

when you decelerate the vacuum caused sucks the air/oil from the crankcase,lubricating the engine,if excesive you get smoke from the tailpipe.then rings are suspect.(blowpast)
also if too thin (5/30) an oil is used in an older engine (10/40)it will have the same symptoms.

I am very interest in helping you and I can but not in this format. I will give you my home phone and we can discuss the problem.

I drove caravans for 10 years and can give you alot of help with your problelm.

Tom

have you checked the obvious like oil and rad level ,brake fluid ect

You have to identify where the oil is leaking. Check the spark plugs if it has oil, you may just need to replace the oil seal in the plugs. If you meant actual burning from the exhaust, you may want to check the head gasket and the piston rings if the oil seeps into the combustion chamber.

Please check your oil.
It may be time for a tune up, because your timing
may be off, and that would make it run rough at all
speeds.Look at your spark plugs and make sure
they are not fouled. If they are wet with oil you can get "non foulers" basically a spark plug extention
sleeve. It brings the plug back out a few inches
from the cylnder and the oil can't reach it.