blue smoke please help

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sheldo
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Post Sun Oct 02, 2005 8:58 pm

hi people

I went out in the cab (2.7 eta) today for run to the mini meet in bury. Ive only owned the car a few weeks so still getting familiar with it. On the way i gave it a little bit now and again.

Everytime i went past four grand and backed off a huge plume of blue smoke came out the back (Reedy can vouch for this im afraid to say). This only happend when i was giving it some past four, pottering it around under 3 i didnt seem to notice any. Also seems a little spluttery when cold, and seems to be using a little oil.

Ive checked the oil filler cap and dont think its the head gasket (no white scum in it). Has anyone got any ideas what else to check or what it could be before i take it to the stealers?
smithy318i
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Post Sun Oct 02, 2005 9:22 pm

Could be worn cylinder rings. Check your spark plugs for oil deposits.
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koos
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Post Sun Oct 02, 2005 9:25 pm

Check if it smokes on first start up in the morning, or let the car drive the engine and check, if it does, then it's valve stem oil seals :?

HTH
Andy_magic
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Post Sun Oct 02, 2005 10:12 pm

I would say valve guide oil seals too.

Glad to see another 2.7 in East Anglia
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Adammcf
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Post Sun Oct 02, 2005 10:24 pm

Sounds like valve stem seals again from what Ive seen in the past.
sheldo
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Post Mon Oct 03, 2005 6:42 pm

cheers lads for the advice ill keep u informed
Dan318-is
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Post Mon Oct 03, 2005 6:43 pm

how hard are these to replace, also think mine mite have gone i get light blue smoke when using all the revs and my spark number 2 have oil in despite a completely new rocker cover gasket set being installed?
E30BeemerLad
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Post Mon Oct 03, 2005 8:28 pm

valve stem seals are a head off and stripped job, so gotta factor a headgastket set and bolts into it (Ԛ£80 from GSF for an M20), timing belt and water pump too unless very recently changed
sheldo
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Post Mon Oct 03, 2005 9:27 pm

so how much roughly am i looking at to have this put right???
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Brianmoooore
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Post Tue Oct 04, 2005 12:33 am

It's possible to change the seals without taking the head off.
Involves either screwing an airline adaptor into a sparkplug hole and using a compressed air supplly to keep the valves in place while you take the springs etc. off, or a more DIY approach of feeding string into sparkplug holes at BDC and then winding the pistons up with the crank untill the string is compressed against the valves.
REEDY
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Post Wed Nov 16, 2005 10:54 pm

(Reedy can vouch for this im afraid to say)
LOL, she did only smoke when givin the boot full though!!!!
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