How to fix the black smoke from diesel engine when accelerating?

1. Always ask a specialist. The Motor Company’s authorized service can help you with any problems with your diesel car.
2. Clean the air system.
3. Check your engine rings.
4. Check the fuel supply.
5. Use fuel additives.

Will a boost leak cause black smoke?

The most common symptoms of a boost leak are loss of power and a check engine light on the dashboard. You can also notice signs like slow turbo spool, poor fuel economy, and black smoke coming from the exhaust pipe during acceleration.

What is high mileage for a VW T5?

You can expect a Transporter T6 or T5 to reach at least 250k if well-driven and properly serviced, meaning it should last you well over 15 years. If you’d like to do more annual miles or want a van to last you 25 years without an engine and gearbox overhaul, it’s important to find the lowest mileage possible.

What causes excessive black smoke on a diesel engine?

Over-fueling is the primary cause of black smoke from the exhaust of a heavy duty diesel engine. Excessive oil consumption due to worn valves and valve stem seals, worn or stuck/sluggish rings from deposits, and worn cylinder liners contribute to black smoke.

Will a blocked DPF cause black smoke?

If there is black smoke leaving your exhaust pipe, this is an obvious indicator that your DPF filter is not working properly. Like any filter, your DPF will, over time, start to form a blockage from the waste that it holds and will need to be cleaned.

How often should you change a Cambelt on a VW T5?

We recommend changing your cambelt once every four years for cars registered before September 2009, and every five years for cars registered after. If you reach the recommended mileage limit before 4 or 5 years, you may need to change the cambelt sooner.

How reliable are VW T5?

Yes, the VW T5 is reputed to be one of the most reliable vans on the road and it is frequent to see well maintained T5’s reaching over 250,000 miles (and even higher). The common problems documented here are minimal considering the model is now approaching 20 years of age.