PlasticMac
Member
Is that running on residual vacum, from last time the engine ran? If so, it also proves the non- return valve is good, I think ...Yes, that is exactly what I had seen on my previous car with the system fully functional ?
Mac.
Is that running on residual vacum, from last time the engine ran? If so, it also proves the non- return valve is good, I think ...Yes, that is exactly what I had seen on my previous car with the system fully functional ?
It would be interesting to know what you observe on your current one, (with a suspect N316 valve), when running the Output Test.Yes, that is exactly what I had seen on my previous car with the system fully functional ?
It would be interesting to know what you observe on your current one, (with a suspect N316 valve), when running the Output Test.
Mac.
Yes, this is residual vacuum. As far as I understand, the engine must be off for the Output Tests to run.Is that running on residual vacum, from last time the engine ran? If so, it also proves the non- return valve is good, I think ...
Mac.
From what I observed, as long as the vacuum can be physically maintained i.e dependent on the leak rate. I didn't have the patience to wait but there is nothing that purges it within a few minutes of the engine stopping. When the ignition is switched on, it is purged and you can hear the "FSI click". It is music to my ears everytime I sit in my FSI. It means the vaccum is good, my flaps are moving and most importantly I am in an FSI.That's what I read in your Rosstech post. Just wondering how long the residual vacum remained after the engine was switched off.
Can't decide if the non-return valve is in the vacum circuit, or the vent side. Looking at those self study notes, I think it's the vent side ...
Mac
First of all welcome.When the MIL is off, it appears that it is working fine, so why doesn't it like being switched off? Any clues?