jjojjas Posted September 8, 2007 Share Posted September 8, 2007 just noticed something on the 200tdi (I'm typing this on the wing .....) No matter what happens to the revs, the turbo actuator/plunger does not move at all. Shouldn't it move when the vacum (or pressure?) picks up?? Jas Quote Link to comment Share on other sites More sharing options...
Les Henson Posted September 8, 2007 Share Posted September 8, 2007 It's called the wastegate actuator rod Jas. Revving the engine at the side of the road won't operate the wastegate - the vehicle has to be driven for the Turbo to work. Les. Quote Link to comment Share on other sites More sharing options...
jjojjas Posted September 8, 2007 Author Share Posted September 8, 2007 It's called the wastegate actuator rod Jas. Revving the engine at the side of the road won't operate the wastegate - the vehicle has to be driven for the Turbo to work.Les. Oh It just looks like its never moved ...........ever..... Just passing the time trying to work out if I have a leaky fuel line..... Quote Link to comment Share on other sites More sharing options...
BLACK CAB Posted September 8, 2007 Share Posted September 8, 2007 Jas, you should be able to move the actuator rod, against the actuator spring pressure, try pushing on the turbo wastegate arm where the actuator rod is connected (as the actuator operates the rod increases in length). I would be surprised if the waste gate were jammed or the actuator were faulty, as if the wastegate is stuck open or the spring is weak/broken your engine would suffer from turbo lag and if stuck shut it would over boost (possibly quite exciting for a short while ). Les is 100% correct, one way or another you need to drive the vehicle.......the best way to see what its going on, is to fit a gauge. Rod Quote Link to comment Share on other sites More sharing options...
66gaza Posted September 8, 2007 Share Posted September 8, 2007 I think they operate at about 18psi of boost, needs to be under load to see that, get a boost gauge they are quite cheap. Gaza Quote Link to comment Share on other sites More sharing options...
jwhitton Posted September 9, 2007 Share Posted September 9, 2007 I had my RS Turbo tuned and to set the actuator up you connected an air line to the actuator with a pressure gauge on the line and slowly turned the pressure onto the actuator. Fine tuning could be achieved with the lock screw on the wastegate arm. Depending on the actuator that was used, the wastegate would start to open at a certain pressure and then be fully open at higher pressure. These two pressures were determined by the strength and profile of the spring in the actuator. On a side note what pressure does the 200TDi/300 or TD5 pull on full boost? How does the over boost control work? My Nomad boost gauge went with the RS when it was sold, so can connect it to see: Worth buying one of these: http://www.nomadracing.co.uk/gauges.html Quote Link to comment Share on other sites More sharing options...
Gromit Posted September 9, 2007 Share Posted September 9, 2007 On a side note what pressure does the 200TDi/300 or TD5 pull on full boost? Mine's standard and tops out at 0.8 bar. I think disco tuned 200tdi are a smidge higher, maybe 1 bar. Quote Link to comment Share on other sites More sharing options...
66gaza Posted September 9, 2007 Share Posted September 9, 2007 Mine's standard and tops out at 0.8 bar. I think disco tuned 200tdi are a smidge higher, maybe 1 bar. I think Grommit is correct its my cummins thats 18psi boost. Gaza Quote Link to comment Share on other sites More sharing options...
RRX Posted September 9, 2007 Share Posted September 9, 2007 200tdi runs 0.8 bar, 300tdi runs 1bar Quote Link to comment Share on other sites More sharing options...
Gromit Posted September 9, 2007 Share Posted September 9, 2007 200tdi runs 0.8 bar, 300tdi runs 1bar I'm pretty sure there's a difference in tune between a defender and disco 200tdi, as the quoted hp figures are different, might not be turbo boost though. Quote Link to comment Share on other sites More sharing options...
jjojjas Posted September 9, 2007 Author Share Posted September 9, 2007 well chaps, mines rigid............can't move it at all, even with tools............ So I'm off to the garage this week as the pump and/or the turbo aint working bummer.........I was going to sell it as well. looks like I'll have a big bill...and then sell it.....sods law Quote Link to comment Share on other sites More sharing options...
Ex Member Posted September 9, 2007 Share Posted September 9, 2007 That does not mean the turbo is stuffed. Disconnect the linkage and see is the wastegate moves. If not, you should be able to free it up. The spring is quite stiff. Quote Link to comment Share on other sites More sharing options...
jwhitton Posted September 10, 2007 Share Posted September 10, 2007 A new actuator wont cost that much if it is broken. Try a new one, after checking the wastegate arm can be moved freely. Quote Link to comment Share on other sites More sharing options...
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