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1993 Cutting Out


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Vetteheadtony

Club Member

Sat 21 Apr 18 16:30


FranV8 wrote (View Post):Thanks Jonathan, might apply the mod myself. Interesting the optispark diagnosis comes from two people who don't have LT1's or 4's...

I think I saw your car in St Ives Shell station the other week, good to see it out and about!

I actually had a few LT1s and have replaced optiís and water pumps on a lot of them Thumbs up


--------------------
Vetteheadtony
2004 Z06 lemans edition pro charged
613 BHP
Black C6 ZR1 wheels
FECKING FAST!!!

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voguev8

Regular

Fri 04 May 18 19:30

Re: 1993 Cutting Out


HELP

2nd Opti fitted today. Very careful to keep it dry and all went well. Now starts but only firing on 7. Checked all leads are ok and assume as duel exhaust I can tell which bank is playing up due to ragged exhaust note. So I have 4 leads/plugs which could be not firing. Due to poor access, is there any simple way I can find which cylinder is not firing.
thanks

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BlackZeD

Club Member

Fri 04 May 18 20:24

Re: 1993 Cutting Out


Take the plugs off one at a time while running (rubber gloves and tool needed)
When the engine note doesnt change thats the one.


--------------------
Don't take life too seriously, after all, your not coming out of it alive.

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voguev8

Regular

Fri 04 May 18 20:37

Re: 1993 Cutting Out


Thanks.
I assume to take off from Opti end and what is the tool.

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Redlevel

Club Member

Fri 04 May 18 20:43

Re: 1993 Cutting Out


If you can watch it idle in the dark, you may see a lead's insulation breaking down and it arcing off something, often accompanied by a tapping sound. Use a stick to prod the leads around.

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