The Dredded Z22YH Fuel Pump

[10cls]

Yes It happend to me.
Fuel pressure problems.
I connected my laptop the the car using an opcom OBDII reader (bought on eBay )
Monitored the fuel pressure and sure enough the pressure droped.
So £300 later I fitted a new pump and now working again.
I noticed the oil seal had "blown" from it's seat leaking hydrolic fluid into the cam housing.
I dissasembled the pump and found it servicable.
The seal is easy to refit using a large socket as a drift.
I need to re fill the hydrolic fluid but the original filling port is sealed with a ball bearing, so I will need to drill a new filler hole.
For those interested I am documenting the project here.
http://www.somethingornothing.com/z22yh_fuel_pump.htm

[Big Dave]

I need to re fill the hydrolic fluid but the original filling port is sealed with a ball bearing, so I will need to drill a new filler hole.

You can knock it out according to the how2

http://www.vectra-c.com/forum/showthread.php?t=118396

.

[10cls]

I am not a full member yet and could not find any pictures.
My fault was the main oil seal blown off.
Thanks for the link very informative.

[omega2498]

Good stuff 10CLS.
If you search under `omega2498' (me) you will see that `my' thread has had 17,000 odd Hits. Perhaps you can put a link there to your interesting thread/pics. Why do you think the oil seal blew out ? High pressure petrol leakage around the swash plate pistons - thereby blowing the seal out ?
When you say you looked at the pressure was that from the lift pump in the tank, or the injection rail pressure ex the HP pump ?