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Author Topic: Warm up regulator-----Pointless???  (Read 5069 times)

Offline Bjork

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Re: Warm up regulator-----Pointless???
« Reply #10 on: 13 May 2009, 23:21 »
The one on the end of the fuel rail is the cold start valve.

Look unders the dizzie and a bit to left and you'll see the wur. It's got 2 fuel lines connected to it.
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Offline rubjonny

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Re: Warm up regulator-----Pointless???
« Reply #11 on: 14 May 2009, 10:04 »
to test 5th injector (aka cold start valve)
http://www.golfgtiforum.co.uk/index.php?topic=116470.0

It should only run for a few seconds when cranking, but it could be stuck open, or leaking or shorted somewhere.  The above tests will tell you if the wiring is ok, in addition once you shut the engine down pull the 5th injector off and check it does not leak fuel.
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Hello my name is John and I'm a dub addict.

Offline neg

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Re: Warm up regulator-----Pointless???
« Reply #12 on: 07 October 2009, 22:30 »
Did you get any further with this?

My 16v sounds similar, cold start up - starts fine, idle's fine just when you rev it its very lumpy, almost like missfiring, you can drive it cold still and as soon as its warmed up (a few mins even) it runs fine.  Stop/Starts throughout the day its absolutely fine - just first thing.

Didnt want to start a new post as your problem sounds very similar.

Ta.
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