I'd just test them. All you need is a pan of water and a multimeter.
Thermostat costs well under 15 quid, ten minutes to fit.
Compression tester 15 quid posted on eBay, dry and wet tests take about 20 minutes if you're not hurrying.
Those guys ought to be bankers!
Thermostat costs well under 15 quid, ten minutes to fit.
Compression tester 15 quid posted on eBay, dry and wet tests take about 20 minutes if you're not hurrying.
Those guys ought to be bankers!