Q3 Wont start some times

[Adrian1966]

Hi anybody no why? Sometimes my car won’t start I’ve changed the battery in the key but still does this sometimes it will start and then want start anybody have any idea what this problem could be thanks Adrian 

[Steve Q]

I'd recommend a diagnostic check to see if any fault codes flag up. 

If diesel it could be glow plugs. 

Or a cam sensor, crank sensor, 

[Magnet]

Hello Adrian,

Petrol or diesel?

By ‘won’t start’, do you means the engine doesn’t crank over enthusiastically, or it does, but it doesn’t start? 
Kind regards,

Gareth.