Alright i just bought a 240 with a redtop sr. It was leaking oil from the turbo line and so i fixed.. doesnt leak any more. when i started the car the idle was high at 1500-1700 rpm and white smoke was coming from the turbo. Could it be that the oil line from the turbo to the block be kinked and its not getting through. I would really appreciate it if i could get an answer. cha
Modified by treesquad at 4:50 PM 10/3/2008
turbo smoking
Re: smoke at idle, changed banjo bolt (treesquad)
it's not easy to bend the stock hard-lines, and they're pretty well tucked so I'd be surprised if one was kinked. If the the turbo was not getting sufficient oil flow the shaft would probably seize to the inside of the center housing after the first 10 minutes on the road.
EDIT* i didn't realize you said the line from the turbo to the block- The rubber drain line can't kink, it's a straight shot from the drain line on the turbo to the fitting on the block. Even if the drain were kinked, the buildup of oil pressure would most likely force itself a passageway between the collapsed rubber. The worst case scenario would be that oil leaks a little bit at where the rubber line clamps onto the drain tube.
The turbo will never smoke externally. If you're positive it's coming from the turbo, then some crud or oil or paint or something is burning itself off and will be done smoking soon. If it doesn't stop, then i'd bet that one of the oil or coolant lines at the turbo is weeping. Use a drop light and a mechanic's mirror and get a good look at where the hard lines connect to the turbo.
As far as the idle is concerned, did the previous owner do anything about the throttle cable bracket? the US cable is too short, and if you don't bend the pedal stop under the dashboard or make yourself an auxiliary bracket to position the end of the cable closer to the throttle body, then the throttle body will not completely close when your foot is off the gas. Make sure mechanical ignition timing is set properly and verify the throttle position sensor voltages. If everything's fine then you can adjust the IACV to lower the idle a bit. Otherwise just give it a little time, because the ECU teaches itself to idle properly.
Modified by Neil at 7:47 PM 10/5/2008
EDIT* i didn't realize you said the line from the turbo to the block- The rubber drain line can't kink, it's a straight shot from the drain line on the turbo to the fitting on the block. Even if the drain were kinked, the buildup of oil pressure would most likely force itself a passageway between the collapsed rubber. The worst case scenario would be that oil leaks a little bit at where the rubber line clamps onto the drain tube.
The turbo will never smoke externally. If you're positive it's coming from the turbo, then some crud or oil or paint or something is burning itself off and will be done smoking soon. If it doesn't stop, then i'd bet that one of the oil or coolant lines at the turbo is weeping. Use a drop light and a mechanic's mirror and get a good look at where the hard lines connect to the turbo.
As far as the idle is concerned, did the previous owner do anything about the throttle cable bracket? the US cable is too short, and if you don't bend the pedal stop under the dashboard or make yourself an auxiliary bracket to position the end of the cable closer to the throttle body, then the throttle body will not completely close when your foot is off the gas. Make sure mechanical ignition timing is set properly and verify the throttle position sensor voltages. If everything's fine then you can adjust the IACV to lower the idle a bit. Otherwise just give it a little time, because the ECU teaches itself to idle properly.
Modified by Neil at 7:47 PM 10/5/2008