Hi all,new to the forum,and 1st post,i have a 1987 T25 doka/crew cab,its a 1.6 N/A diesel,with a JP code(Mk2 golf,i think?)engine in it,when i turn on the ignition the glow plug light on the dash only stays on for 3 seconds,its not freezing here in Manchester,but still cold in a morning,it cranks over for quite a while,when it does start i get clouds of white smoke,that goes after a minute and she runs and revs nicely,if i turn her of she starts 1st turn of the key with no smoke,i know there's a glow plug temp sensor at the rear of the cyl head,a glow plug relay and glow plugs,but i'm new to diesels,any ideas on how and what i should be checking first?,thanks for any replies,cheers Dave