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Location:
sydney
Registered:
May 2002
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I supported Toymods
Location:
Perth
Registered:
July 2004
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Re: 6MGE fouling plugs?
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Tue, 05 July 2005 14:26
 
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define fouled up..as in coated with oil? or carbon?
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Location:
Brisbane
Registered:
May 2002
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Re: 6MGE fouling plugs?
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Tue, 05 July 2005 23:10
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Black smoke = rich = fouled plugs. The EFI system on the early M series engines is pretty crude, it's basically an electronic carbeurettor. If it gets out of adjustment the mixtures can do just about anything, but the good news is it's relatively easy to adjust by fiddling with the airflow meter. Chances are someone has done this already and that's why it's running like crap now.
Anyway, take it to a shop with a dyno and a gas analyzer and you should be able to get the mixtures back to factory spec.
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: 6MGE fouling plugs?
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Wed, 06 July 2005 00:29
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It might be worth chatting to the previous owner to find out what he did. What EFI system is the 6MGE running on - 5ME, 5MGE (analogue or digital) or a bona fide 6MGE loom and ECU? This may all be helpful information. Has anyone played with the AFM? Did anyone use a different water temp sensor? Try disconnecting the cold start injector and see if that improves things (maybe it is stuck on?). Are the plugs you are using the correct heat range for the 6MGE? So many things that it could be it is impossible to diagnose these things over the intraweb.
I point to Norbie's answer. I would also recommend using conventional plugs (rather than platinums) but with a V groove once the mixture issue has been sorted.
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Location:
sydney
Registered:
May 2002
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Re: 6MGE fouling plugs?
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Fri, 08 July 2005 15:02
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It might be worth chatting to the previous owner to find out what he did. What EFI system is the 6MGE running on - 5ME, 5MGE (analogue or digital) or a bona fide 6MGE loom and ECU? This may all be helpful information. Has anyone played with the AFM? Did anyone use a different water temp sensor? Try disconnecting the cold start injector and see if that improves things (maybe it is stuck on?). Are the plugs you are using the correct heat range for the 6MGE? So many things that it could be it is impossible to diagnose these things over the intraweb.
I point to Norbie's answer. I would also recommend using conventional plugs (rather than platinums) but with a V groove once the mixture issue has been sorted
yeah original owner's got no idea about anything... i fixed the car for him when i was looking at it and it wouldn't start.
how can i find out what efi system it's running? The computer is mounted in a compartment behind one of the seats, is it written on the computer?
i'm using BCPR6ES NGK plugs (they didn't have the V grooves in stock)
how do i disconnect the cold start injector?
if someone has played with the AFM adjustments, is it like a mixture screw or more like a TPS adjustment?
if it's an air mixture screw type of thing, is there a factory setting that i can adjust it to?
thanks in advance
bexi
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Location:
sydney
Registered:
May 2002
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Re: 6MGE fouling plugs? help still needed
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Sat, 09 July 2005 10:18
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hey just thought i'd ad an update and hopefully stillget some help
changed air filter today, old one wasn't too bad tho.
put new plugs in again and started up and ran well. i've disconnected thew cold start circuit and blocked hoses accordingly.
found a new fault that may be related to the foulding of plugs that hopefully someone is familiar to....
if i slowly bring the revs up in the car to about 2500rpm, it get's the big miss and jumps between 2500 and 2000rpm. so if i just hold my foot on the accelerator at what would be 2500rpm, it continually jumps between 2000 and 2500. and no it's not the tacho jumping it's the motor changing revs between 2000 and 2500rpm. it's like someone reving the motor up to 2500 from 2000rpm repeatidly in perfect timing (just to try and explain)
any more help would be greatly appreciated... it's be good if i dond't have to fork out big bucks to get it dyno'd and solved and the car is unregistered at the moment too.
i've discovered that it is running a 5me dizzy but couldn't see what sort of ecu it is.
this miss that i am describing is strange because if you actually drive the car or simply give it a good rev, it runs perfect and you notice nothing. you can rev it straight through the stutter/miss if you are not revving slowly. i couldn't actually get the car to miss at all when i was driving it up the street today. it ran perfect (of course until the plugs will fail in another 300kms or so)
please help
thanks
bexi
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Location:
Melbourne
Registered:
May 2002
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Re: 6MGE fouling plugs?... STILL NEED HELP
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Sat, 09 July 2005 10:31
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sounds like a 5m-e ecu!get some photos up here
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