as i did my usual quick check under the bonnet of my R reg xantia td (you know make sure the engine hasnt split in half...that sort of thing) i noticed that what looked like like little breather hoses had come off at the back bulkhead. [:0]
they were between the LHM container and the engine and seemed to connect to a couple of relays and the end of the rocker cover.
i have now reconnected them [:D] but nothing seems to have changed driving the car....does anyone know what they are? [?] my guess is they are part of the engine management system... but i wouldnt put money on it
Strange pipes
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Kowalski
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Are they the vacuum hoses that control the EGR valve and cold idle speed?
You should have one hose that comes off the vacuum pump (on the gearbox end of the camshaft) and goes to a T piece beneath the two electrovalves, one pipe goes into each electrovalve. The electrovalves should have a pipe each, one goes to the EGR valve (on the exhaust manifold) the other goes up to a diaphragm device that connects to a bowden cable that goes to the injector pump and controls your cold idle speed. If either comes off the cold idle speed will be permanantly enabled so it will never run at its hot idle speed.
You should have one hose that comes off the vacuum pump (on the gearbox end of the camshaft) and goes to a T piece beneath the two electrovalves, one pipe goes into each electrovalve. The electrovalves should have a pipe each, one goes to the EGR valve (on the exhaust manifold) the other goes up to a diaphragm device that connects to a bowden cable that goes to the injector pump and controls your cold idle speed. If either comes off the cold idle speed will be permanantly enabled so it will never run at its hot idle speed.
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Richard Gallagher
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The valve on the offside controls the idle speed, the other the EGR.
I would imagine that they may have been disconnected by a previous owner looking to improve performance/consumption.
It has been mentioned by some that leaving the EGR disconnected will improve engine life due to the engine no longer sucking in hot exhaust gases with a heavy oil residue.
I would imagine that they may have been disconnected by a previous owner looking to improve performance/consumption.
It has been mentioned by some that leaving the EGR disconnected will improve engine life due to the engine no longer sucking in hot exhaust gases with a heavy oil residue.