jasst
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While leading the piston heads tour into the Sherborne classic and supercar show today we have developed a problem, the car ran fine to the meeting place of Haynes museum, but when we left it would not rev above about 4000, and really misfired and emitted lots of smoke and sparks from the exhaust, below 4000 the car sounded fine and behaved normally, upon arriving at the show, we stopped and while waiting to go through the crowds someone noticed a pool of oil coming from the area of the air filter. Had to start up to get out of the way, and sounded normal but did not rev it much, but oil pressure was down to 2.5 bar (is normally around 5bar), not prepared to risk driving it home so have had it recovered back home, but had to start it to get it off the road, bit of smoke but oil pressure was back up to 5 bar. Any body any ideas what could possibly be wrong? hopefully something simple like a blocked breather, but I somehow doubt it.