Les Henson Posted March 25, 2007 Share Posted March 25, 2007 I've been working on a 2.5 N/A engine (head gasket). Engine runs better, but still smokes. I just noticed that it has a TD inj pump fitted, and the the turbo boost part of it has got a plug in it, and the other pipe goes to the spill rail as normal. I don't suppose anyone has any idea if the TD pump would cause any problems on the N/A? Getting awfully p****d off with stinking old L/R engines I can tell you. Les. Quote Link to comment Share on other sites More sharing options...
selectcase Posted March 26, 2007 Share Posted March 26, 2007 I would say its the wrong pump. I know the injectors for the n/a and turbo are the same and the turbo will need more fuel injected for the denser air going in so it must be the injection pump that is calibrated for greater delivery and hense perhaps the smoking? Quote Link to comment Share on other sites More sharing options...
simonr Posted March 26, 2007 Share Posted March 26, 2007 I reckon it will be fine. The turbo engine is in effect NA if the turbo is not running. Since there will be no pressure applied to the boost diaphragm, the fuel should be correct. Si Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted March 26, 2007 Share Posted March 26, 2007 I wouldnt have thought it would make a difference.... Quote Link to comment Share on other sites More sharing options...
Kim Horsevad Posted March 28, 2007 Share Posted March 28, 2007 I've been working on a 2.5 N/A engine (head gasket). Engine runs better, but still smokes. I just noticed that it has a TD inj pump fitted, and the the turbo boost part of it has got a plug in it, and the other pipe goes to the spill rail as normal. I don't suppose anyone has any idea if the TD pump would cause any problems on the N/A?Getting awfully p****d off with stinking old L/R engines I can tell you. Les. This could be of some concern. The newer injection pump delivers fuel at a much higher pressure (up to 600bar for some 300tdi injection pumps.) than the earlier injection pumps (up to 150bar). The higher pressure could result in damage to the injectors. If a fault occurs in an injector, thereby creating an uneven spray pattern, this could damage the piston. The uneven spray pattern, and following uncompleted combustion, would show as increased black smoke. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted March 29, 2007 Author Share Posted March 29, 2007 TD , not TDi Les. Quote Link to comment Share on other sites More sharing options...
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