Motor noise excessive exhaust smoke

[87HHOregalt]

High mileage car noticed slight burning smell then smoke pouring out of exhaust excessive amount smoke while driving - oil pressure ok - temps ok but slight tick clatter noise never heard before from motor - power loss still accelerates but inhibited -turbo? rings ?seals head gasket ? Help

 

[Chuck Leeper]

" excessive amount smoke while driving"
With your foot "in it"?
1.Check the oil. Water in it?.
2.Radiator have bubbles in it?
3.Coolant low? Refer to #1.
4.Smoke: White or blue? White = hg. Blue =oil.
Blue smoke could be the turbo has failed.
5.Ticking noise: Head gasket blown outward.
6. Wastegate stuck shut/inoperative = hg.
IN ANY CASE DO NOT RUN THE ENGINE!
Some checks to make:
Plugs out, check for water.
Downpipe off and check for oil.
Up pipe off check for oil in the intake.
Look closely around the plug side of the heads for head gasket being pooched out.
A compression test should quickly find a blown gasket.