The Cause
With all the new advancements in technology vehicles are improving in torque, power, and better fuel economy but there are setbacks. For instance direct injection is far superior over it’s predecessor port injection by directly injecting fuel into the cylinders, but at a cost. The main issue results from the fact that there’s no fuel passing behind the intake valve causing it to get an oil and carbon build up over time. It’s been found that the intake valves are gumming up as early as 45,000km.
Symptoms
Image from 2008 BMW 135i After 11,000km of Last Cleaning
- Check Engine Light
- Rough Idle
- Misfire
- Lack of power
- Poor Fuel Economy
- Sticking Valves (Noisy Engine)
- Engine Loses Power Under Heavy Acceleration
The Resolution
There’s only one effective way to remove carbon and oil deposits on the intake valves. The intake plenum first must be removed to blast the top on the intake valves with walnut shells. The shells are safe and don’t harm or groove the valves. This restoration service leaves the valves practically new. The smell of roasted walnuts circulating through the building marks the end of another successful vavle cleaning service.
Risk
If the valves are not cleaned there’s a chance of a piece of carbon being sucked through the combustion chamber and possibly harming downstream exhaust components such as catalytic converters or turbos.
We Perform this Engine Restoration Service at a fraction of the cost of dealerships.
