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BMW 3-Series (E90 E92) Forum
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Underboost - vacuum lines replaced and can't find a boost leak
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10-06-2011, 04:42 PM | #23 |
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10-06-2011, 04:48 PM | #24 |
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thats true! but damn 12hrs! ASR mechanic is a pro at it already he does it super quick
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10-06-2011, 04:58 PM | #25 |
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if i remember right book time was 12 hours.... it took me 16 on jack stands on the garage floor with no assistant to hand tools or anything... totally solo... would certainly be faster a 2nd time.. but it's no 3 or 4 hour job :-)
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10-06-2011, 07:59 PM | #26 |
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vac boost solenoids? They blow sometimes and are cheap to replace. Frozen boost has a cheap leak tester too. It helped me find some pin holes in my dv couplers..
Interested to know how forge (diverter valves) tore your wastegate diaphragm?
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10-06-2011, 08:36 PM | #27 | |
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Quote:
they had forge actuators... forge fixed them up. |
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10-06-2011, 08:48 PM | #28 |
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mine always leaked at the diverter valves connection and underboosted..check that
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10-06-2011, 11:28 PM | #29 |
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what were the codes... I don't know what would happen if a MAP sensor failed, but maybe DME wouldn't allow boost. Datalog with the procede. drivable right, just no boost. thought I noticed you mentioned map3 when skimming... this is the no boost map.
For wastegate solenoids, probably want to check vacuum when both are connected and downstream between solenoid and wastegate. on start up wastegates should move from open to closed. wastegate flapper cup or linkage to arm separated? the cup is 2 pieces i think. Just throwing some things out there... but really don't know. |
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10-06-2011, 11:58 PM | #30 |
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idk this guy does it quick ask oddjob if you dont believe me
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10-08-2011, 09:10 AM | #31 | |
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the answer
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yea.. update.. bad news... I wasn't crazy... front turbo is seized up, won't turn/move AT ALL... No oil in the exhaust side... when i pulled the compressor output hose, there was some oil there, haven't gotten the compressor input side off yet so i can't report the state of that.... chatted with ASR yesterday... sending them back, will get it fixed (under warranty if possible, depending on how/why it broke).... will probably have them do the separation wall delete as well as the actuator upgrades... so those with the forge actuators, aside from the initial troubles, is all good so far ? how are they made inside ? do you expect longer life out of them than the stock ones ? anyone looked at the inside of them ? (i don't want them if they require somewhat regular cleaning/greasing like the DVs... i want "put em in and forget about em, forever" I probably will NOT wait for the compressor wheel upgrade as it hasn't been produced or tested yet, and I can't have my car sitting in pieces for months... thanks everyone for the help/ideas... at least i was sure i had checked everything before i pulled the DPs (basically expecting bad news down there, cut my yelling and swearing down a bit ) |
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