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Greg
Greg, Shop Owner
Category: UK Car
Satisfied Customers: 6794
Experience:  17 years Shop Owner /Technician. 27 years experience,
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Why is my boxer van hdi 2.0 smoking?

Customer Question

Why is my boxer van hdi 2.0 smoking ?
Submitted: 1 year ago.
Category: UK Car
Expert:  Greg replied 1 year ago.

Depends on the colour of the smoke .

White Smoke

White Exhaust Smoke consists of a large number of

particles of fuel oil larger than 1.0 microns in

diameter. This indicates that the “Fuel is not

Burning.”

POSSIBLE CAUSE

1)

faulty ignition pump

2)

too high injectionpressure or faulty injection

3)

improper grade/delivery of fuel

4)

incorrect engine value timing

5)

engine overheating or too cold, coolant entering

combustion chamber and/or water in fuel

6)

high exhaust back pressure.

Blue Smoke

Blue smoke consists of a large number of fuel oil

particles about 0.5 microns in diameter or less. T

hese

particles are recondensed droplets of unburned fuel

or

incompletely burned fuel. This indicates that the

engine burns excessive oil; and/or indication of

“Lubricating Oil” being burned.

POSSIBLE CAUSE

1)

engine crankcase oil level too high

2)

wrong grade/type of fuel

3)

oil level in air cleaner too high

4)

air cleaner oil too light in viscosity

5)

worn piston rings, valve guides or cylinders

6)

turbocharger/blower defective.

Black or Gray Smoke

Black or Gray Smoke consists of particles of carbon

formed when fuel is heated in oxygen lean regions i

n

the combustion chamber. Part of the fuel in the

chamber is not being ignited or burned.

POSSIBLE CAUSE

1) faulty injection pump timing

2) too high injection pressure or faulty

injection nozzles

3) clogged or damaged air intake filter

4) improper grade/delivery of fuel

5) incorrect engine valve timing

6) engine overheating

7) high exhaust back pressure

8) poor cylinder compression.

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Kind regards Greg.

If after a oil and filter change make sure that the engine was not overfilled with oil ..

this will make it smoke also ..

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