TPB79
New Member
I need a bit of advice. I refilled my 4G63t cc coupe with BP ultimate after having less than a quarter of a tank left. I drove for around 30 km and the car ran fine as it normally does. After the 30 or so km the car was slightly surging while on the motorway and started to idle a bit rough. I drove the car the next day and coughed and spluttered on start up, then idled ok until warmed up. When driving only 5 km the car was surging a lot more than the day before really hard to control in a car park in first and second gear without engaging the clutch and the idle would jump up and down by 200rpm at the same time as the oil pressure gauge ranging 20-25 psi. Black soot is on the concrete when the car started up. The car doesn't seem to be happy at all. I've bought BP ultimate from the same servo for the last 2 1/2 years of owning the car. I'm thinking is it best to drain the fuel and put some fresh fuel in as well as a treatment. Any help would be great, thanks.
