V8V Exhaust Solenoids - Seized
Discussion
Hi,
Collected mny V8V a few weeks ago, lots of fun and smiles!
I noticed in the service history (Oct last year) Aston listed 'attempt to free up seized nearside exhaust solenoid'.
My car has the Prodrive kit so there's a button you can hit to open the valves up all the time, keep it as per standard car or keep it closed all the time.
I'm fairly convinced there's still a problem with the valve(s). I started her up this morning, had it set to 'standard' and noted the position of the NS valve. I then hit the button for fully open and there's no change.
My question is, when a solenoid gets seized, is it stuck in the open position of closed; just not sure how these things work (is it sucking air to keep it closed or pushing air)? When I remove fuse22 it's loud but you only getting pops/bangs on the overrun from (what appears to be) the offside; could all be in myhead though.
Car booked into Aston for this and some other work to be done; just curious on how these valves work.
Cheers
Collected mny V8V a few weeks ago, lots of fun and smiles!
I noticed in the service history (Oct last year) Aston listed 'attempt to free up seized nearside exhaust solenoid'.
My car has the Prodrive kit so there's a button you can hit to open the valves up all the time, keep it as per standard car or keep it closed all the time.
I'm fairly convinced there's still a problem with the valve(s). I started her up this morning, had it set to 'standard' and noted the position of the NS valve. I then hit the button for fully open and there's no change.
My question is, when a solenoid gets seized, is it stuck in the open position of closed; just not sure how these things work (is it sucking air to keep it closed or pushing air)? When I remove fuse22 it's loud but you only getting pops/bangs on the overrun from (what appears to be) the offside; could all be in myhead though.
Car booked into Aston for this and some other work to be done; just curious on how these valves work.
Cheers
Have a read of this (very) recent thread: http://www.pistonheads.com/gassing/topic.asp?h=0&a...
It might tell you what you're after. IIRC, vacuum pressure is required to keep the valves closed ie quiet.
It might tell you what you're after. IIRC, vacuum pressure is required to keep the valves closed ie quiet.
This is my other thread linked to the one above http://www.pistonheads.com/gassing/topic.asp?h=0&a...
I found both mine to be seized. You can get to them without lifting the back of the car, but I chose to drive it up some ramps. I disconnected the vacuum hoses (easily done, just needed a bit of force) and then extended both the pistons so both valves were fully closed. Levered them closed with a screw driver. Pretty easy really and the difference is night and day vs how it was sounding before.
Trying to work out how the garage will lubricate the valves. Considering you can't get inside the exhaust, maybe it's a matter of doing it from the outside? The workshop manual has nothing about this.
I found both mine to be seized. You can get to them without lifting the back of the car, but I chose to drive it up some ramps. I disconnected the vacuum hoses (easily done, just needed a bit of force) and then extended both the pistons so both valves were fully closed. Levered them closed with a screw driver. Pretty easy really and the difference is night and day vs how it was sounding before.
Trying to work out how the garage will lubricate the valves. Considering you can't get inside the exhaust, maybe it's a matter of doing it from the outside? The workshop manual has nothing about this.
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