Carbon build up?

[Kamiljano]

Hello guys,
I'm just wondering what ways you lot have to preventing/ limiting this?
My dad is a strong believer that if you take the car on a long drive regularly it will slow down the buildup as the engine gets really hot shouldn't stick as much and nothing's worse than short trips for a car.

I've actually just replaced the intake manifold today so I cleaned the valves up as they were caked with carbon.
Was actually replacing the intake with the idea of selling the car but after a few hundred cuts and not having my car for a few days we ended up bonding more and decided to keep it. Fuel economy has improved a lot too.

What are your opinions on catch can systems?
Do the Long drives regularly give any benefit?

I'm aware there's not a solution to this right now as it will happen anyway but any specific ways of slowing it down?

Thanks

[sadtranz]

Could try this done mine last year with Liqui Moly and petrol mix, does it work who knows " onclick="window.open(this.href);return false;

[salsajoe]

The problem with modern fuel injection engines is that fuel does not go near the intake valves to help keep them clean like it used to in the past. The engine recirculating system does recycle oil fumes from the sump and mix it with fresh air from the intake box with the resultant carbon build up. When the engine gets really hot it will help to burn off some of the carbon from the intake valves but we all do short journeys so quite a lot of build up will occur over time. The only real solution if you have cleaned up the intake valves is a catch can that removes the oil fumes causing the carbon build up. Worth doing if you intend keeping it for some time (and makes your cleaning effort worthwhile).