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Location: brisvegas
Registered: August 2004
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Help!! GZE won't fire! *solved*
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Tue, 14 December 2004 09:02
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Just put the new flowed head on today, put it all back together, lined everything up correctly, plugged everything back in, new spark plugs, turned the key….nothing..rrrrrrrrrrrrrrrrrrrrrrrrrr rrrrrrrrrrrrrrrrrrrrrrrrrrrrr the motor just spins and spins..it’s got fuel, got spark, got compression..am I missing something here?? Doesn’t matter how far the timing would be out it would stil backfire, fart, or dribble, but nothing..took the plugs out..yep, there is fuel on them..grounded one..yep, she sparks…it isn’t even kicking!! It’s kinda pissing me off, cos I know it will be something stupid..i stuffed the knock sensor up (broke it off by accident) but even then they just run in limp mode right? It should still fire..
Any help or ideas would be great thanks guys!
[Updated on: Thu, 16 December 2004 05:14]
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I supported Toymods
Location: Sutho/Hills NSW
Registered: September 2002
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Re: Help!! GZE won't fire!
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Tue, 14 December 2004 10:16

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sounds like exactly the same problem im having with my 1ggte
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Location: The Eastwood MASSIVE !
Registered: May 2003
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Re: Help!! GZE won't fire!
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Tue, 14 December 2004 10:26

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I have seen this problem , the coil pack signals are around the wrong way , and so the packs are till firing , but the wrong pack at the wrong time.
EI the pack for 1 and 4 is firing when you should be firing the pack for 2 and 3.
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Location: sydney
Registered: March 2003
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Re: Help!! GZE won't fire!
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Tue, 14 December 2004 10:46

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if coils on wrong then it would back fire
i recon u might have cam timing wrong
does the engine spin over easily
like too easily
do u know that a 4a engine one dowel is up and the other down when on top dead centre
i recently wired a ze and the guys fitted cams on wrong
top dead no1 u need
left cam dowel top with notch at top and notch at right of gear
right cam u need dowel at bottom (not straight up and dowen slightly off vertical) and notch on gear at top and one on left
the 2 notchs wil lline up next to each other in the middle
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Location: brisvegas
Registered: August 2004
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Re: Help!! GZE won't fire!
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Tue, 14 December 2004 11:01

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sideshow - yes the cams are done right..as for the coil packs, i marked one of them befor i took it off so i would know which one to put where..maybe there not connected properly???
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Location: Rocky Mountains, Canada
Registered: May 2002
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Re: Help!! GZE won't fire!
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Tue, 14 December 2004 11:11

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drift86levin wrote on Tue, 14 December 2004 21:31 | sideshow - yes the cams are done right..as for the coil packs, i marked one of them befor i took it off so i would know which one to put where..maybe there not connected properly???
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If they were not connected properly, you wouldnt have spark.
Got a timing light so you can make sure ignition is all setup ok?
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Location: sydney
Registered: March 2003
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Re: Help!! GZE won't fire!
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Tue, 14 December 2004 11:20

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are your plugs very wet with fuel
maybe they wont fire when in the head
but they fire out of head
maybe not enough fuel
maybe crank sensor is out
take cover off it and try movin it a tooth at a time
eventually u will get there
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Location: brisvegas
Registered: August 2004
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Re: Help!! GZE won't fire!
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Tue, 14 December 2004 12:10

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i have tried all of that quickley, then i needed to go to work, i'll give it a detailed look tomorow morning, and i'll let everyone know what went wrong! and how it goes with $1600 worth of head work and some bigport cams goes...
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Location: brisvegas
Registered: August 2004
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Re: Help!! GZE won't fire!
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Wed, 15 December 2004 05:53

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ok it appears to not have a great deal of compression..a skimmed ZE head, and a 1mm 3layer metal gasket 'SHOULD' if anything bumped up the compression..so what i'm thinking is 'maybe' i mesured the shims wrong and there keeping the valves open.. is there a difference between the overlap (on the stock non-adjustable gears) for bigport - smallport cams??
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Location: brisvegas
Registered: August 2004
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Re: Help!! GZE won't fire!
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Thu, 16 December 2004 01:37
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sideshow wrote on Tue, 14 December 2004 21:46 | if coils on wrong then it would back fire
i recon u might have cam timing wrong
does the engine spin over easily
like too easily
do u know that a 4a engine one dowel is up and the other down when on top dead centre
i recently wired a ze and the guys fitted cams on wrong
top dead no1 u need
left cam dowel top with notch at top and notch at right of gear
right cam u need dowel at bottom (not straight up and dowen slightly off vertical) and notch on gear at top and one on left
the 2 notchs wil lline up next to each other in the middle
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hit the nail on the head with that one my friend...while i was putting the g/box and clutch in, my mate was doing the cams, he is a qualified toyota mechanic, so i just took his word for it...i suppose everyone is entitled to a stuf up now and again.. thanks guys
ohh and by the way, the ZE winds up so bloody fast now with the headwork!!
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