Right. I've had intermittant problems with pinking and hesitation under acceleration for a little while now. First I put down to a dodgy tank of fuel, but it's happened on and off several times now.
A few months back King's SEAT, Sidcup looked at it for two days after it had hesitated badly - but of course it was nowhere near as bad when they investigated - just slight hesitation under gas in 2nd. No fault codes. They thought it may be early signs of cat failure but didn't want to replace it without anything concrete (didn't charge for 2 days investigation btw). After discussion on here I disconnected MAF, no difference. Even got it up on a qwik-fit ramp and inspected exhaust, no apparant leaks.
When it's bad from cold there is really serious hesitation and a misfire. Last month for the first time I was getting hesitation in all gears even when fully warm, but then the problem disappeared again and it seemed OK - until I filled up today. I always use Optimax and always fill the tank but I never overfill. I'm wondering if the problems are only happening when the tank is full and as I'm getting through the first quarter tank? Would this suggest anything? I've only driven about 5 miles on a warm engine since filling up again - but it's definately worse. The car had seemed to be back to itself when I was down to the last quarter of the previous tank but now it's sluggish again. It's getting bleeding annoying. Any help/answers appreciated.
A few months back King's SEAT, Sidcup looked at it for two days after it had hesitated badly - but of course it was nowhere near as bad when they investigated - just slight hesitation under gas in 2nd. No fault codes. They thought it may be early signs of cat failure but didn't want to replace it without anything concrete (didn't charge for 2 days investigation btw). After discussion on here I disconnected MAF, no difference. Even got it up on a qwik-fit ramp and inspected exhaust, no apparant leaks.
When it's bad from cold there is really serious hesitation and a misfire. Last month for the first time I was getting hesitation in all gears even when fully warm, but then the problem disappeared again and it seemed OK - until I filled up today. I always use Optimax and always fill the tank but I never overfill. I'm wondering if the problems are only happening when the tank is full and as I'm getting through the first quarter tank? Would this suggest anything? I've only driven about 5 miles on a warm engine since filling up again - but it's definately worse. The car had seemed to be back to itself when I was down to the last quarter of the previous tank but now it's sluggish again. It's getting bleeding annoying. Any help/answers appreciated.
