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1、,START,3.0L V6D Customer reports excessive smoke from the exhaust,Dealer should try to reproduce the symptoms, record outcome on record sheet,Carry out a leak test of the induction system using a smoke test. Check for leaks from the exhaust system.,Were leaks detected ?,Trace the leaks use a spare o
2、il filler cap with a 6mm hole as a test tool and connect a Mityvac or pressure gauge.,YES,NO,Measure the engine manifold blow-by pressure at idle with the engine cold. Normally the pressure will be around atmospheric.,Using SDD, monitor the shut off valve measured position which should change after
3、3 minutes indicating that the secondary turbo is now operating. At this point measure blow-by pressure at idle. Blow by pressure will normally be around atmospheric.,Measure blow-by pressure at 3000 rpm. Normally the pressure gauge will now show a slight vacuum.,Remove pipe below scavenge tank, care
4、fully collect all oil that drains in 30 minutes (minimum).,A,C,Trace source of high blow-by; check for low compressions and breather restrictions,Switch off the engine and refit the original oil filler cap.,C,Remove the primary and secondary exhaust downpipes. If oil is present take pictures to atta
5、ch to TA report.,Check induction system for presence of oil. If oil is present take pictures to attach to TA report.,Check turbo intercooler warm engine, drive the car with SDD connected to monitor the secondary turbo. Hold the engine speed to around 3800 rpm for 10 minutes and check for visible smo
6、ke from the exhaust.,NO,Was more than 500ml of oil collected from the scavenge tank?,NO,YES,A,YES,Oil found from exhaust manifold?,YES,NO,NO,Drain the scavenge tank over night. Check whether smoke is produced when engine is started with an empty scavenge tank.,Check the scavenge pipes are not blocked / restricted,Was engine light on?,List all stored DTCs,Did oil level need topping up, or was there too much oil in engine?,Symptoms reproduced?,Customer complaint secondary turbo operating 3000 rpm,Excessive blow-by? Cause?,Millilitres (ml) of oil drained from scavenge tank?,TEST RESULTS
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