vacuum reading.

I am having power issues on take off when fuel injection is operating in closed loop.Inital
cold start is fine but deteriorates when warm (After several minutes). Runs better when
oxygen sensor is disconnected. Very slow to accelerate from stand still but runs well over
2000rpm.This has been going on for over ten years. Gives symptoms that engine is running
lean. Have had it looked at by a mechanic who said everything is OK. Have replaced oxygen
sensor (twice).May be an air leak, but cant find one. Can someone please measure their
vacuum pressure at idle from the air distribution plenum (rubber hose under vacuum hose to
brake servo) so that I have a comparison. Could I please have actual readings from peoples
vehicles not just theoretical readings. Motor is standard WBX tuned correctly with new plugs.

Nick. B.
Try a new engine /ecu temp sender, they play up some times

----- Original Message ----
From: nickbellau <nick.bellgrove@tafesa.edu.au>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Monday, 10 December, 2007 1:29:42 PM
Subject: [Syncro_T3_Australia] vacuum reading.

I am having power issues on take off when fuel injection is operating in closed loop.Inital
cold start is fine but deteriorates when warm (After several minutes). Runs better when
oxygen sensor is disconnected. Very slow to accelerate from stand still but runs well over
2000rpm.This has been going on for over ten years. Gives symptoms that engine is running
lean. Have had it looked at by a mechanic who said everything is OK. Have replaced oxygen
sensor (twice).May be an air leak, but cant find one. Can someone please measure their
vacuum pressure at idle from the air distribution plenum (rubber hose under vacuum hose to
brake servo) so that I have a comparison. Could I please have actual readings from peoples
vehicles not just theoretical readings. Motor is standard WBX tuned correctly with new plugs.

Nick. B.




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