Engine Hunting ?? - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
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#1 (permalink) Old 05-30-2007, 05:13 AM
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Engine Hunting ??

Hi,

Just got my first BMW ..95 320i e36. The engine is very rough (hunting) at idle and performance is poor, really have to kick it hard to get it to pull...

Nice car but need it sorted...any suggestions?? Don't mind getting my hands dirty...enjoy the mechanics..just need to know where to start ?

Thanks
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#2 (permalink) Old 05-30-2007, 06:17 AM
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Well the 320 performance is poor to start off with, is an engine swap in your options?
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#3 (permalink) Old 05-30-2007, 06:26 AM
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Do you have a check engine light on?
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#4 (permalink) Old 05-30-2007, 02:56 PM
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Don't really want to change the engine unless all else fails...

The check light has flashed up a couple of time after starting but it doesn't stay on
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#5 (permalink) Old 06-01-2007, 05:50 PM
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Check for a vacuum leak.
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#6 (permalink) Old 06-02-2007, 01:04 AM
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Yep vacuum leak and clean the ICV (idle control valve). Both easily done, will take 30 mins to do both tops.
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#7 (permalink) Old 06-04-2007, 05:41 PM
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Thanks...

Cleaned things up and fixed a vac hose...new plugs and now idle is good
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#8 (permalink) Old 06-10-2007, 09:07 AM
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Fuel Pump

Quote:
Originally Posted by craigf
Thanks...

Cleaned things up and fixed a vac hose...new plugs and now idle is good
You may also want to check what fuel pressure is the fuel pump making,
5psi difference will make a big difference on actual fuel injected since it is a exponential relationship between fuel rail pressure and actual fuel injected trough the injector.

So you may also want to make sure that the pump is indeed in good shape...

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