Last night i was driving home and all of the sudden when i put my foot down to rev up 3rd gear the engine started to shudder like it was about to run out of gas (the was half a tank of gas in the car). The problem continued for a little bit, i was able to drive home by keeping the rev's under 3000rpm. I rev'd out 2nd gear a few times on the way back home, and everything seemed fine.
Yesterday i took the atmo bov off and connected the standard plumback setup back on, so not sure whether that has anything to do with it.
Also on the odd occasion, when i'm driving i'll put my foot down on the gas and for a split second theres the slightest of hesitation before the engine starts to rev up. Almost like one plug is fouled up.
Any ideas of where to start?