why will my vauxhall vectra 20DTI not start in the cold?

I Have a 04 20DTI vauxhall vectra and it will not start in the cold. I Have been told the glow plugs are ok and that the timming was out. This has made no difference at all. The car has only 44,000 could you give any advice
Darren Byers, March 2008


done
if your glow plug's are o.k, check the relay for them,make sure there's power getting to them ?

steray, March 2008
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