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cold start = 5cyl, 10 secs later 6cyl again 

 

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 Post subject: cold start = 5cyl, 10 secs later 6cyl again
Posted: Mon Feb 27, 2006 9:20 am 
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yep, 1st time i start the engine in the morning she misses, after a few seconds she's running on all 6, runs perfectly for the rest of the day no matter how long between starts except overnight

plugs aren't very old, ~30,000k, leads ~60,000k, leads seem to fit on plugs ok and secure

i'm wondering if maybe it's coil packs?

haven't pulled the plugs yet to have a look, will when i get time

any ideas?
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Posted: Mon Feb 27, 2006 11:58 am 
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I would have to say plugs or leads.

You shopuld probably be changing your plugs every 20,000 or so depending on their condtion
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Posted: Mon Feb 27, 2006 12:20 pm 
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Water in cylinder? Head gasket gone? This is what heppened to an old celica I had.

 

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Posted: Mon Feb 27, 2006 12:37 pm 
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Spork wrote:
Water in cylinder? Head gasket gone? This is what heppened to an old celica I had.


OMFG don't even think it ... far out, better go pull the plugs see if anything squirts out the holes :shock:
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Posted: Mon Feb 27, 2006 12:42 pm 
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Is the car using any water because if it is it could be just the reason :shock:

 

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Posted: Mon Feb 27, 2006 12:43 pm 
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dddp! wrote:
Spork wrote:
Water in cylinder? Head gasket gone? This is what heppened to an old celica I had.


OMFG don't even think it ... far out, better go pull the plugs see if anything squirts out the holes :shock:

Very carefully check the plugs as you pull them out, look for any signs of water :cry:

 

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Posted: Mon Feb 27, 2006 2:10 pm 
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Yeah my guess would be either fouled plugs or leads in this situation

Water in cylinder would definately foul the plug as to would oil and excess fuel

When you pull plug out check that electrodes are in good shape and not broken off or bent out of shape.
Another thing to look for is any hairline cracks in the porcelin cover of the plug as this will lead to failure.
Also look for any corrosion on tip (water) or black slime (obviously oil), if these are current then you will most likely have a serious problem

If spark plugs look fine then through a multimeter onto your ignition leads and see how there fairing

If all these fail to bring anything up then i would look towards the coil packs but most likely these will be alright and one of aforementioned problems will arise

 

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Posted: Mon Feb 27, 2006 8:55 pm 
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sometimes a leaking injector can cause this, does it throw out any black smoke? my guesse is the head gasket though
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Posted: Mon Feb 27, 2006 11:33 pm 
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Sticky lash adjuster. Head gasket they usually run like s**t all day.
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Posted: Tue Feb 28, 2006 2:25 am 
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no time to check yet, have to wait til thursday, fingers crossed in the mean time

don't think its water, hopefully ..... its not blowing any smoke

might get some new plugs before i pull the old ones
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