7 replies to this topic

[cooperdan]

SPI 92
Cooper

Hey there just a quick question how would you know if you have a faulty purge valve? or is it a case of just buying new one.

I have turned the engine on and put my cheek over the valve area and im getting a slight breeze of air coming from that area

What you think

Edited by cooperdan, 25 April 2009 - 10:29 AM.

[Sprocket]

Why do you suspect it to be faulty.

The valve should be closed and pass nothing, with 12v posative and negative applied, it should open and allow air to pass. if it doesnt, its broke :thumsup:

[cooperdan]

Because my engine decides not to start every time i leave for short periode of time couple of hours.....longer than that it willl start with no problem and run beautifuly...thats all...its what i think anyway

[cooperdan]

As above really could this be the cause of the problem...ive tested the vavlve getting a reading no problem..cant think of anything else it could be..fuel pump ticks over ok elecy system is fine..unless its got something to do with warmth..dont know

[Dan]

It would help of you'd either continued this in the orginal thread or added a link to it:

Linky

How have you tested it? Have you checked that it is actually closing quickly when the volts are removed? It's not a sensor it's just a valve so checking it electrically alone isn't relevant, you need to ensure that its mechanical function is being performed.

Again, moved to injection.

[cooperdan]

the reason i didnt put it in the spi section because i didnt feel it was that related....

But Bless you for doing that

How would i test the functioning of the valve

[Dan]

See if you can blow through it immediately after it's been turned off. It should completely shut off the air flow immediately the power is removed, if this is what's causing your problem it would be because it's weeping air for some minutes as it's become sticky and sluggish is its old age.

It belongs here really because only injection cars have an electric purge valve, these are the only cars it would be relevant to.

[nicksuth]

Just found this little bit of info from the Rover manual which states the valve is controlled by the ECM and should not open until engine reaches 70 DegC > > >