Smoke from exhaust blue

Asked by May 27, 2016 at 12:04 PM about the Ford Explorer Sport

Question type: General

Smoke from exhaust blue

1 Answer

5

blue is oil white is coolant/head gasket black too rich fuel mixture Blue/Gray Smoke: Blue/gray exhaust smoke is an indication of oil burning in the combustion chamber. These are possible symptoms and causes: Valve Seals: Leaking valve seals will cause blue/gray exhaust smoke. Valve Guides: Excessive clearance between the valve stem and the valve guide allows oil to leak past the gap into the cylinder. Piston Rings: Worn or damaged piston rings will cause blow-by, resulting in blue/gray smoke. Worn Cylinder Walls: Worn cylinder walls cause blow-by, resulting in blue/gray smoke. PCV System: A stuck closed PCV valve causes excessive crankcase pressure, resulting in blue/gray smoke. Black Smoke: Black exhaust smoke is an indication of a rich fuel condition. These are possible causes: Fuel Injectors: A leaking or dripping fuel injector will cause a rich fuel condition. Fuel Pressure Regulator: A stuck closed fuel pressure regulator will cause a rich fuel condition. Fuel Return: A restricted fuel return line will cause a rich fuel condition. White/Gray Smoke: White exhaust smoke is an indication that coolant is burning in the combustion chamber. These are possible causes: Cylinder Head: A crack in the cylinder head (around the coolant jacket) will cause coolant to enter the combustion chamber. Engine Block: A crack in the deck of an engine block near the coolant jacket will cause coolant to enter the combustion chamber. Head Gasket: A damaged or blown head gasket will cause coolant to enter the combustion chamber resulting in white/gray smoke coming from the tailpipe.

Your Answer

Add photo

Related Questions

Search Ford Explorer Sport Questions

Ford Explorer Sport Experts

#1 chassy
chassy
Reputation 340
#2 tennisshoes
tennisshoes
Reputation 210
#2 Tom Demyan
Tom Demyan
Reputation 210
View All

Related Models For Sale

Used Ford Explorer
767 Great Deals out of 73,775 listings starting at $750
Used Ford Explorer Sport Trac
68 Great Deals out of 1,943 listings starting at $750
Used Jeep Grand Cherokee
807 Great Deals out of 69,478 listings starting at $995
Used Ford F-150
2,425 Great Deals out of 209,613 listings starting at $895
Used Ford Escape
1,049 Great Deals out of 91,983 listings starting at $1,600
Used Ford Edge
616 Great Deals out of 50,212 listings starting at $3,200
Used Chevrolet Tahoe
621 Great Deals out of 27,509 listings starting at $600
Used Dodge Durango
244 Great Deals out of 22,893 listings starting at $1,500
Used Ford Expedition
421 Great Deals out of 23,874 listings starting at $2,000
Used GMC Acadia
548 Great Deals out of 45,089 listings starting at $4,500
Used Toyota 4Runner
277 Great Deals out of 20,347 listings starting at $1,850
Used Honda Pilot
358 Great Deals out of 20,107 listings starting at $2,000
Used Ford Mustang
311 Great Deals out of 45,194 listings starting at $2,000
Used Jeep Cherokee
321 Great Deals out of 57,843 listings starting at $2,500
Used Toyota Highlander
384 Great Deals out of 23,950 listings starting at $2,900