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Looking for a repair shop for your diesel vehicle?
Look no further for than Roanoke Valley Auto Works!
Our skilled technicians are trained to maintain, as well as diagnose and repair your vehicles intricate diesel engine and support systems.
See what our customers are saying...
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Don't just take our word for it.  Here is what some of our customers are saying. For more just click the links below.

  • "Great quick service and very kind people who work there!" recommendation from Nancy Bartlett

  • "Quality service with exceptionally friendly employees . We had a breakdown very far from home, they accommodated us immediately, and offered cold water coffee and a nice AC space for us to wait. Very pleased, and thankful for them." Facebook recommendation from  Laurel Aifd

  • "This company saved me literally thousands of dollars when I used them to do a pre inspection of a vehicle I was buying. They were friendly, helpful, and honest. I highly recommend you use them before you buy a used vehicle. Trust me the little bit of expense could save you a ton of money. Thank you Ashley and Christ for your wonderful job."  Five Star Review from Jason Garlow

So, how exactly does a diesel engine work?

The diesel engine (also known as a compression-ignition engine), named after Rudolf Diesel, is an internal combustion engine in which the ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to the mechanical compression. Induction draws in the air and fuel.  Compression causes the air to compress, heat, and ultimately cause the spontaneous combustion of the fuel creating Power.  The Exhaust stroke expels the heated air out along with a mixture of incompletely burnt particles.

The torque of the engine, or the amount of work it can do, is controlled by the air to fuel ratio during Induction, and it relies on altering the amount of fuel that is injected while using a high air ratio.

Ever wanted a picture to show you all those terms the shop throws out at you when describing your repairs?  

Well here you go, from the turbo to the oil tank, here is your diesel engine.  Even those little glow plugs that help heat your engine during the cold months.

Yes, we can even help you when your regen light comes on.

Regeneration is the process of burning off the accumulated soot from the Diesel Particulate Filter (DPF) by (passively) the engine's exhaust heat in normal operations, or (actively) by adding:
(a) late fuel introduction during the exhaust stroke
(b) use of fuel-borne catalyst
(c) a catalytic oxidizer to increase the exhaust temperature with after injection

The DEF is part of the Selective catalytic reduction (SCR) system.  This system converts toxic nitrogen oxides (NOx) in the exhaust into Nitrogen and Water by adding the DEF into the exhaust flow just before the catalyst.  Not only does SCR system reduce nitrogen oxides, but it also reduces Hydro Carbons (HC) and Carbon Monoxide (CO) by 50-90 percent.

It also helps on fuel consumption as well.

Don't want to break the bank with your diesel repair?  Click below to get help.
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