Slow puncture repair
I was called out to a Nissan 350Z with unusual alloy wheels fitted with bent steel valves. the customer said that he had a slow puncture as the pressure would drop over around a week. I took off the wheel and checked the tyre, no problems, I then checked the valve and found it was leaking at the base. I took the tyre off the rim, and removed the steel valve only to find that the rubber seal at the base had split and this was the cause of the leak. Luckily I had a spare seal of the right size, I soon replaced it, and bolted the valve back into place. The tyre was then refitted, inflated and re-balanced. I then did a recheck on the valve using a leak detector, only to find that all was OK. The wheel was then replaced on the car, and bolted in place. Work completed and one happy customer.