Sammo
Club Retro Rides Member
Posts: 1,461 
Club RR Member Number: 103
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Afternoon,
My 2004 Mini One Diesel is smoking from the exhaust once warmed up. The engine needs to of been running for at least half an hour before it does it but then it's pretty smokey. I removed a boost pipe and there is some oil residue in the pipes but they're not dripping with oil. With the boost pipe removed from the turbo and the engine running there is some exhaust gas coming out of the turbo on the cold side. Is it meant to do that?
This is what happens once it's warmed up.
The engine oil level seems fine but when looking down the back of the engine I have noticed some drops of oil that seem to of come from the join between the downpipe and exhaust system. This is what's making me think the seals on the turbo are going.
Can anyone offer any advice?
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Follow Me On Instagram - @parttimecartinkerer
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Do these have a crankcase filter?
If so check that, if it's anything like BMW diesels, they get clogged up with oil and go rock hard and the oil system pressurises and the only way it can go is through the turbo seals. Same symptom on mine, oil dripping from downpipe join.
I bought a new turbo for mine, that didn't cure it, but the new filter did. I wanted it fixed so after spending a large amount on the turbo, the £70 updated filter from BMW seemed like a small amount, and it did fix it. The intercooler needed to be cleaned out also.
It smoked on boost, which was a faulty injector leaking. (of which a new one was also bought *groan*).
I should add, your turbo -may- be fine and won't need the seals redoing.
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Last Edit: Jan 2, 2017 15:34:43 GMT by DavidB
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ChasR
RR Helper
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Posts: 10,197
Club RR Member Number: 170
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I was going to say I would check the breathers.
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The engine in these is the Toyota 1.4 D4-D unit, normally very very tough. Sounds like the turbo has a bit of wear
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ChasR
RR Helper
motivation
Posts: 10,197
Club RR Member Number: 170
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The turbo will be down to either a sticking actuator/vane or chipped blade. While it would make it less efficient it wouldn't cause the smoke.
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mk2cossie
Club Retro Rides Member
Posts: 2,974
Club RR Member Number: 77
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Is it not just a split boost pipe? Looks like it's giving it fuel without the air to go with it. Have tried several ways but can't get the first video to play unfortunately, but if there are pipes or the intercooler off whilst revving in the second vid, then that is usual and the turbo sounds noisy as if there is a boost leak  |
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Sammo
Club Retro Rides Member
Posts: 1,461
Club RR Member Number: 103
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Is it not just a split boost pipe? Looks like it's giving it fuel without the air to go with it. Have tried several ways but can't get the first video to play unfortunately, but if there are pipes or the intercooler off whilst revving in the second vid, then that is usual and the turbo sounds noisy as if there is a boost leak First video is me trying to show exhaust gas coming out of the cold side outlet of the turbo. Not sure if it's meant to do that? The second video everything is don't back up. All pipes back on etc. |
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Sammo
Club Retro Rides Member
Posts: 1,461
Club RR Member Number: 103
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Turns out the module that controls the EGR valve wasn't working properly so was holding the EGR open constantly. That's what was causing it to smoke. I've disconnected the EGR and magically the smoke has vanished!
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Follow Me On Instagram - @parttimecartinkerer
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I've blanked mine off, they're just a pain in the  . If it's open all the time, your inlet might need a clean out. You'll notice the difference if it's a bit clogged up. Mine had golf ball sized clumps of oily blobs removed from it. |
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Sammo
Club Retro Rides Member
Posts: 1,461
Club RR Member Number: 103
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Yeh I'm going to get the gasket for the inlet and then take it off and give it a good clean out!
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Follow Me On Instagram - @parttimecartinkerer
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