Starting problems until warm!

[Deefadog]

Thanks Gambit!

At least it's not going to be an expensive fix I think the cold start valve was abot £30 including VAT at GSF!

I'll get the CO% adjusted

If i disconnect the cold start valve, i assume you mean the electrical connection to it? if so if it was duff woul it not still drip fuel connected or disconnected?

Thanks for your help mate, i'll let you know what happens

[Gambit]

yes it would still drip but it you dont get the extra squirt of fuel in the morning which is flooding the car as there already is fuel there from dripping overnight - dunno if that makes sense??

disconnect it and leave it overnight then tell us what its like to start the next day

[Deefadog]

I see, makes perfect sense, I'll let you know how it goes!
cheers

[Deefadog]

It made no difference

Just starter motor turning over and a few coughs and splutters, then stalls!

So i guess there either lack of fuel getting to the engine or lack of air?

Any suggestions

[Gambit]

maybe your cold start valve doesnt work at all then

[Deefadog]

Is there a way to check this?

What is the thing that acts a bit like a choke then?, because about 5 seconds after she starts then the revs increase for a short period!

[Gambit]

basically this is what happens on cold starts

on turn of ignition, cold start valve opens and sprays in an extra helping of fuel to help start the car
once running the fuelling is increased for 7sec's the warm up regulator controls this, and the ISV operates in conjunction with this - so you get the slightly higher idle for a small amount of time

i assume you can test the cold start the same way you'd test an injector (spray it into a jar). ive never tested one before as mine have always worked.

[Deefadog]

So if i get increased idle at start up then the warm up regulator and isv is woking correctly!

I'll test the cold start if i can, there is no mention of it in the haynes (but i could have missed it)

*Edit - just found it on the online bently site - http://volkswagen.msk.ru/vw_doc/eva2/FU01/ch6.2.html

I'll test and see

This all started back months ago when i had the valve seals changed to stop the smoke! anything involved in this that could have messed up the cold start?

Damn it, wish i had spares for everything, so i can rule each one out lol

I am going to change the fuel filter tomorrow since i have not changed this since i had the car, maybe that is clogged up and not letting the fuel through at start? I know i am just guessing here but this is the cheapest an easiest solution

Thanks again for the help, nearly there with this motor

[Deefadog]

Cold start injector tested and it works fine!

Anything else it could be mate?

[Deefadog]

Also new fuel filter fitted! still the same! (better throttle response though)