GolfGTIforum.co.uk

Model specific boards => Golf mk2 => Topic started by: Lee on 19 October 2003, 22:08

Title: cold starting
Post by: Lee on 19 October 2003, 22:08

Hello
My 16v does not like to start after it has sat all night. I thought it might be the cold start valve or the thermo switch but i have noticed that once it has started it ticks over at 1100 rpm which means the choke must be working so i dont know whats happening. ???

Title: Re:cold starting
Post by: golfvr6 on 19 October 2003, 22:14

Look at the cold start valve, as all this does is spray extra fuel in when starting the engine from cold. Once it has started, there is no choke, the warm up regulator allows more fuel in to make a richer mixture.

Title: Re:cold starting
Post by: Lee on 19 October 2003, 22:37

Ok vr6 i might be getting a cold start valve soon so i will give it a go.
Cheers

Title: Re:cold starting
Post by: golfvr6 on 19 October 2003, 22:54

Good luck mate, stick with 16v , sh!t hot motors  ;)

Title: Re:cold starting
Post by: Lee on 21 October 2003, 17:29

sorry mate i cant find the auxiliary air valve, where is it.
Cheers

Title: Re:cold starting
Post by: Ant on 21 October 2003, 18:03

Yep, I've got this prob as well, got my hands on a colortune, but finding the instructions a bit weird,

The main one is about warming up ypur engine before running the colortune, but that's the whole point I want to see what's happening during cold start, anyone want to post a howto :)

Title: Re:cold starting
Post by: golfvr6 on 21 October 2003, 18:26

Just plug it in, and start your engine from cold. Observe the colour, should be a fair amount of orange.

Title: Re:cold starting
Post by: Gambit on 22 October 2003, 09:36

whats a colourtune??

Title: Re:cold starting
Post by: golfvr6 on 22 October 2003, 10:13

Its a spark plug with a window, so you can see the colour of the combustion flame, ie. when engine is cold blue with lots of orange, when warmed up blue with small tints of orange. You can buy them in Halfords nice and cheap, very usefull for non-ecu cars like k-jets, carbs.

Title: Re:cold starting
Post by: Slim Shady on 22 October 2003, 11:42

Stock Valves are meant to tick over between 900 -1100 anyway.