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So the revs bounce around on idle slightly - so far have done new plugs and new PCV. Get a code of P0518 which suggest idle air control valve or vaccum leak. My boost gauge has also stopped showing boost level when driving so a leak would make sense but don't know where to start to check - any...

Had to give in and get it to garage. His initial thoughts are the heads gone but going to look into it more next week and strip it down but no looking good. Will update once know more

Thank you going to try and get spark plug out tme if I can chance to see if fuel in there. And don’t worry I appreciate any suggestions so sooner say it twice than not at all

Im in Hucknall - Nottingham ive taken the feed (metal one) off the hpfp and there is a good feed of fuel there so assume this is the same as the rest you’re suggesting?

Having to us Carly as can’t get my Other one to connect at the moment

Apologies for the delay on this but still can’t get the car started. I replaced the fuel Pressure sensor but still won’t start. Tried ignition on and off multiple times incase it was fuel draining back with it being stood and had another car connected to battery for extra power but it still...

Hi - was going to change this today to see if it fixes my starting issue but having removed the under try looks like have to remove oil filter to do it. Don’t really want to do an oil change just to change the sensor but is this the only way? Car is 2006 s3.

I’m guessing but wondering if could be crankshaft sensor?

Yes the pump/spring part looked good no wear and o ring in place. The part of the cam in engine you can see once the follower removed also look good - no marks etc

Got the follower out and this is the condition

Thank you will try and take pump off tme to inspect and go from there

No going to do that in the morning as didn’t have a T30 till this evening - checked faults codes as well since and non recorded which I thought was strange

I removed the bleed valve and then turned the ignition to the first click and fuel came out in a nice stream so it’s making it that far - would this suggest the pump is knackered?

Traveling home yesterday engine light came on then drop in power until the car shut itself off - was on the motorway so not great then had to spend over and hour on hard shoulder waiting for a tow to get me home as car wouldn't start. Battery is fine I believe its a fueling issue - so I can hear...

Just make sure it’s clean, wash it well and degrease before spraying. Obviously mask off etc

I’m no expert but from when I did a lot of monitoring and logging on mine the temp gauge often read 90 a good 10 minutes before the actual coolant was at temp. Think I’ve read it works on a range of circa 15 degrees either way so could show 90 when it’s only at 75 for example

Had fan issues myself for months and after lots of trial and error replaced them as it was the module. But yes the larger fan should come on at 92 degrees I believe - are you using the temp in the car or logging the actual temp of the coolant?

Change the grey/green one and no it’s made no difference so assume it wasn’t faulty

As in the one in the big fan? I did wonder just confused as they work sometimes so thought they’d either work or not at all if that was faulty?