P38A More EAS diagnostic help needed

I discovered my diaphragm seal was worn by unscrewing the exhaust silencer ( white cylinder sticks out of valve block enclosure on same side as the air pipes). With the pump operating, you should not sense air flow through the port. If air is passing, suspect leaking diaphragm.

Thought I’d reply to this. Got the air suspension working properly last weekend. Has taken a while but have had other things to do.

I ended up buying a 2nd hand air tank off eBay for £30. Haven’t fitted it in the end but enabled me to confirm the problem. The air line from the valve block in the engine bay to the air tank under the car must have ruptured. No idea where as it’s pretty tucked up and inaccessible for the most part.

The exhaust leak seems to have been complete coincidence and unrelated.

Ran a new airline from the valve block to the tank via a slightly different and easier to install routing and all seems to be working again.

Think it’s probably time to replace the air springs though. They are looking a little tired.



One of the rear springs does deflate quickly when turning the engine off (not the one pictured above). It wasn’t when I was inflating it manually via 12v compressor. So not sure if I need to recheck the fittings or if it means there is a leak on the valve block for this spring. But something to sort over the coming weeks.

They're well and truly FUBAR.

Grrrrrr said:

They're well and truly FUBAR.

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You aint kidding !

Mine were like that when I first got the car.

300bhp/ton said:

Thought I’d reply to this. Got the air suspension working properly last weekend. Has taken a while but have had other things to do.

I ended up buying a 2nd hand air tank off eBay for £30. Haven’t fitted it in the end but enabled me to confirm the problem. The air line from the valve block in the engine bay to the air tank under the car must have ruptured. No idea where as it’s pretty tucked up and inaccessible for the most part.

The exhaust leak seems to have been complete coincidence and unrelated.

Ran a new airline from the valve block to the tank via a slightly different and easier to install routing and all seems to be working again.

Think it’s probably time to replace the air springs though. They are looking a little tired.

One of the rear springs does deflate quickly when turning the engine off (not the one pictured above). It wasn’t when I was inflating it manually via 12v compressor. So not sure if I need to recheck the fittings or if it means there is a leak on the valve block for this spring. But something to sort over the coming weeks.

Click to expand...

Not tired, completely knackered.