Boxster wont start - Help pls ?

[Ghostrider 310]

Originally Posted by clivep078

Thanks all. Any ideas on the high pitched noise and sporadic chatter from throttle body area?

You might need a mass air flow sensor

[clivep078]

I'm goin to give the MAF a clean but its not flagging any codes and I wouldn't expect the fault to be so on / off in symptoms if it was MAF - just general running crap all the time.
Hence I am thinking this noise is a faulty solenoid or pump around the throttle area, which may have a big impact on the car starting or not. If you think back to the old days !! when we had chokes - if the choke was set wrong, the car wouldnt start - equally if you pulled the chocke out whilst driving, it would die - and if the choke was out when hot it wouldn't start. Hence is there something that performs the function of a choke in the area of the throttle housing? This could also explain my o2 sensor code when I was chucking unburned air and fuel on to it !!

[Jager]

What do your plugs look like?

[clivep078]

Well when it fires it is fine and performance is good so I suspect the plugs are ok.

This is more of a - either it starts - or more often it does not - and when it dosnt it does not fire at all or even try just turns over.

If it was plugs id expect a slow cough and splutter until it got going and then poor performance generally

But i'll take a look at the weekend !