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Location:
Perth
Registered:
September 2002
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6mge smoke....explanation?
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Sat, 27 September 2003 09:30
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i may have an explanation for 6mge smoke problems
a few weeks ago, i rebuilt the head, and when i started her up, she blew smoke for a good few mins. she finally stopped after i was able to take her for a drive
the other day, i replaced the front crack seal, and when i started her up, she blew smoke again, and didnt stop until i took her for a drive
now, the only this common between these two cases is that the battery was unplugged, and hence the ecu was reverted back to factory settings.
now i'm thinking, that something is different between the 5mge and 6mge that the 5mge computer doesnt like.
anybody got any ideas?
would the ISCV? valve have anything to do with this here?
either way, fitting the 5mge part should fix it?
cheers
Peewee
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Location:
Brisbane
Registered:
May 2002
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Re: 6mge smoke....explanation?
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Sat, 27 September 2003 10:16
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I thought (flame me if I'm wrong) that if it had an 02 sensor that ecu could tune itself (to some extent) under cruise conditions(closed loop rings a bell?)?
If you reset the ecu it will lose the "tuned" setting and revert back to the stock rich / safe factory settings?
Or this could be a total load of crap 
Cheers
Wilbo
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Location:
Perth
Registered:
September 2002
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Re: 6mge smoke....explanation?
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Sat, 27 September 2003 15:26
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yeah, thats my understanding too, but i'm thinking that the 5m and 6m had different factory settings, particularly with respect to a certain sensor
i just need to find out which sensor it is that causes this smoke
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Location:
melb
Registered:
May 2002
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Re: 6mge smoke....explanation?
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Sun, 28 September 2003 02:59
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your running the 6mge on the 5mge puta?
of course things are going to be right!! - the factory would have modded the maps to suit the greater airflow of the 6m.
your setup is a compromise.
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Location:
Brisbane
Registered:
May 2002
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Re: 6mge smoke....explanation?
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Sun, 28 September 2003 06:40
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The 6M-GE runs fine with a 5M-GE ECU (I had such a setup for a while). Remember this is older analog fuel injection, which was never very precise to begin with. As a matter of fact it's very flexible, so an extra 200cc doesn't make much difference.
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Location:
melb
Registered:
May 2002
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Re: 6mge smoke....explanation?
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Sun, 28 September 2003 10:53
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but I think hes running the TCCS system as the car is an aust delivered 5MGE isnt it?
but others who have actually done this conv swear by the 5mge ecu running a 6mge - so I guess your smoke prob is caused by something else.
if its black smoke it may be a tunning prob - o2 or ecu..
white smoke, your motors stuffed!! - well maybe not stuffed but not shmick either.
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Location:
Perth
Registered:
September 2002
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Re: 6mge smoke....explanation?
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Mon, 29 September 2003 01:18
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TCCS?
i wasnt aware i had that
yeah, it runs it, its been running it for over 3 years now
as for the smoke, its white/blue, so oil
but i've just rebuilt the head, so its not that, and i know the oil rings are slightly gone, but NOTHING compared to the amount of smoke that was pouring out.
it doesnt blow smoke under WOT ever, so the rings are too bad, but it does blow it if i let it idle for a bit (traffic lights or whateva) and when i rev it, it gives a little puff.
but i just rebuilt the head (professionally) so its not that.
so its got to be a valve or sensor somewhere, coz it only happens when the ecu reverts back to factory maps
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Location:
Brisbane
Registered:
May 2002
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Re: 6mge smoke....explanation?
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Mon, 29 September 2003 02:18
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The ECU can't make your engine burn oil; it only controls the fuel. Your problem lies elsewhere.
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Location:
Perth
Registered:
September 2002
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Re: 6mge smoke....explanation?
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Mon, 29 September 2003 02:33
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yeah., i didnt think it could either, but its just wierd that the only times its blow this much smoke is after the ecu has been reset
very odd
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: 6mge smoke....explanation?
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Mon, 29 September 2003 02:35
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Back to basics. Do a compression test.
Check the breather lines - it may be that for some reason an excessive amount of oil is coming thru there (incorrectly connected / excessive blowby).
I remain suspicious about the head. The nature of the oil smoke (puffs on idle, big puff on take off, little/no smoke at high rpm) is suggestive of poor oil control by the valve stem seals. Could it be possible the incorrect ones were used (the 6MGE is not an Aussie delivered motor)?
As Norbie has stated, the ECU controls fuel, not oil.
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Location:
Perth
Registered:
September 2002
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Re: 6mge smoke....explanation?
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Mon, 29 September 2003 04:00
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yeah, compression is good, 160-170 accross the board
afaik, all the breather hoses arent blocked, and havent been touched
the head was rebuilt with a 5mge kit, coz everyone says that the heads are exactly the same between the 2 motors
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