
Originally Posted by
alien
The bit that point to vac for me were the shuddering and almost stalling, especially if the car was stopped or slow. Once they're moving it's ok.
I just saw you said PCV too, which just confirms that it's vacuum. Sorry, it was late at night and i speed read! :P
A Positive Crankcase Ventilation valve has a vacuum hose on it. Needed to expel bad gases. As to why it would be more common on gas cars than petrol i could only speculate that there is a bigger build up of gases? If the hose split towards the end it's just probably wear on the actual hose, and doesn't change based on gas/petrol! Maybe they wanted you to feel a bit better.