Mondeo 2.0l Zetec

Honest John Back Room » Technical matters
View Threaded
Fri 29 Aug 2003 16:34
Mondeo 2.0l Zetec - Bert
R reg, Can anyone tell me why the 2 small diameter rubber pipes that go to the exhaust gas analyser (small alloy thing fitted to bulkhead) keep being blown off when I rev the engine.

Bert
Reply | Report as offensive | Link
Fri 29 Aug 2003 16:58
Mondeo 2.0l Zetec - Malcolm_L
Could be for a number of reasons, however excessive back pressure from the exhaust is a possibility.
Has the fuel consumption increased and does the engine appear to be running hotter than normal?

Reply | Report as offensive | Link
Fri 29 Aug 2003 17:10
Mondeo 2.0l Zetec - Bert
Only just happened this afternoon. The gases from the pipes was so hot it started a small fire in the matting material fixed to the bulkhead.
The 2 pipes come off of a metal pipe that runs from the exhaust manifold to another unit fixed to the side of the inlet manifold. This other unit looks like it might contain a diaphragm of some sort. Another metal pipe goesfrom that to the inlet manifold to form a gas circuit.
We have tried a few things so far but as soon as the revs rise off the pipes go
Reply | Report as offensive | Link
Fri 29 Aug 2003 17:23
Mondeo 2.0l Zetec - Bert
Further to your suggestion of excessive back pressure, we have just put it back together again & tried it, there does not seem to be much coming out of the exhaust, so a blocked cat could be the reason.
How much for a new one
Cheers
Reply | Report as offensive | Link
Wed 3 Sep 2003 07:13
Mondeo 2.0l Zetec - Bert
All OK now, new cat fitted for £225
Bert
Reply | Report as offensive | Link

Looking for a garage you can trust? Honest John's Good Garage Guide has thousands of reader recommended garages, plus how-to guides and tips on servicing.

The Good Garage Guide