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 & complete re
2、pairs. Follow instructions in TOPIx,Drain & measure the oil volume.,Is the oil level overfull ?,YES,NO,A,Ensure vehicle has oil level topped up, but is not overfilled. Refill with clean oil if necessary,Ensure one-way valve, part number LR028945, has been fitted correctly and is working.,B,Record wh
3、ether check engine light is on & any diagnostic trouble codes (DTC) stored.,Does DTC indicate a known fault?,YES,NO,Fix the known issue first,Have smoke symptoms cleared?,END,NO,YES,Wherever this symbol appears please record findings on the record sheet,Key:,YES,NO,Refill engine to correct level wit
4、h existing oil (or clean oil if necessary) following procedure in TOPIx,B,Did gauge show a positive pressure indicating high blow-by ?,Carry out an inlet manifold blow-by test; use a spare oil filler cap with a 6mm hole as a test tool and connect a Mityvac or pressure gauge.,YES,NO,Measure the engin
5、e 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 minutes indicating that the secondary turbo is now operating. At this point measure blow-by pressure at idle
6、. 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, carefully collect all oil that drains in 30 minutes (minimum).,A,C,Trace source of high blow-by; check for low com
7、pressions 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 attach to TA report.,Check induction system for presence of oil. If oil is present take pictures to attach to TA r
8、eport.,Check turbo intercooler & inlet pipe for oil and record volume of oil drained (ml).,Check compressor shut-off valve (CSOV) for oil and inspect the valve seal for oil contamination.,Has vehicle had part number LR035869 turbo fitted ?,NO,YES,Has a scavenge pump been fitted to the vehicle previo
9、usly?,NO,YES,Has the vehicle had a new primary turbo ?,NO,YES,Fit new scavenge pump (LR023936), check the scavenge pipes are not blocked or restricted.,Fit new secondary turbo (LR035869). While turbo is off check pipe between exhaust manifold and turbo for evidence of oil.,Fit new primary turbo,END,
10、Is there oil in the exhaust or the charge air system downstream of the primary turbo?,Contact technical assistance if problem cannot be resolved,Thoroughly clean complete induction system, remove intercooler & CSOV and clean & remove all oil from the exhaust system.,Carry out road test; warm engine,
11、 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 smoke 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 sc
12、avenge 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?,Custome
13、r complaint & description of drive cycle & weather conditions when problem was observed,Yes / No,Yes / No,Had LTB00358 already been carried out previously?,Was the one-way valve (LR028945) already fitted?,Yes / No,Yes / No,Did smoke test find a leak?,In induction system? In exhaust system? None foun
14、d?,Pressure at the oil filler cap, idle, engine cold idle, engine warm;secondary turbo operating 3000 rpm,Excessive blow-by? Cause?,Millilitres (ml) of oil drained from scavenge tank?,TEST RESULTS,Record measurement,Has the vehicle previously been fitted with secondary turbo part number LR035869,Yes / No,
