A few months ago I bought my first CAPA box and had it installed plus got a custom tune (98 RON). After I left the workshop it was perfect, 241rwkw. After a couple of weeks I noticed the car started to ping at high revs. I took it back to the tuners and discovered that the valve springs were the cause. I didnt really want to spend more dollars to install new valve springs so I decided to just leave the car stock and give the box to a friend.

I noticed today that my car has started to slightly ping again at high revs. My car is stock.

Do you think the valve springs are now just really warn out?

Something I should also mention, my car stock on the tuners dyno was 215rwkw.

Edited 03/02/08 06:24 AM03/02/08 06:24 AM by chooch

If your car is absolutely stock, I dont understand how it could be valve springs.

Mine used to ping in hot weather, but it was modified.

swap fuel for starters,change the fuel filter,check the air temp sensor is plugged in

Would it ping due to springs. I find this hard to believe

I was going to say fuel filter mabee.

your tuner should be able to stick it on the dyno and see whats going on.

if its leaning out when it pings it may be fuel starvation.

Could be fuel pump.

Many possibilities, but get it sorted, don't drive it about untuned it will cost you bucket loads in the long run

Yeah I got the tune done at KPM. It was all good for a few weeks then it started pinging. KPM spent two days trying to figure it out. They claim it was the valve springs.

Anyway I flashed the car back to standard and it was all good for a few months but today it started pinging again...........with no tune! stock as a rock.

It's not under warranty anymore. Should I go to Ford to get them to check it out? I know it will cost me.

Mate of you go to ford be prepared to bend over and "spread em"

Change the fuel filter and get a mechanic to check the fuel pressure while on a dyno