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Cylinder 6 makes the car shudder 

 

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 Post subject: Re: idle problem
Posted: Fri Oct 14, 2005 11:45 am 
Getting Side Ways
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FPV_GTp wrote:
reset the idle on the car u have to follow a procedure on the CPI ( carby style injections ) otherwise u will have alsorts of idle problems if not done correctly


sorry I'm not understanding that part. Could you please explain and thanks for the help as well.

Cheers,

Michael
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Posted: Fri Oct 14, 2005 12:19 pm 
Getting Side Ways
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also a quick question. If its a cracked gasket, why would it only shake at idle. When i accelerate wouldn't it sort of continue. But i also think it might not because it is faster shaking so it would just be constant.

Also from that would i be losing power.

Cheers,

Michael
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Posted: Fri Oct 14, 2005 1:34 pm 
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The DMac wrote:
also a quick question. If its a cracked gasket, why would it only shake at idle. When i accelerate wouldn't it sort of continue. But i also think it might not because it is faster shaking so it would just be constant.

Also from that would i be losing power.

Cheers,

Michael


Idle sees quite a high vaccum in the manifold compared to any other point where the throttle plate is open and therefore vacuum leaks are more noticable. High vacuum is also experienced when using the engine to slow the car down.

Prepsol or similar can be sprayed around the suspect area... if the idle rpm increases then prepsol is being sucked in through the leak and combusted by the engine...

Have you done an actual spark test? i.e. see if a spark is actually being delivered to the no 6 lead?

 

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Posted: Fri Oct 14, 2005 1:42 pm 
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the leads were replaced and and the plug was burning properly so they were right. think it might be a vacuum hose.
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Posted: Fri Oct 14, 2005 9:22 pm 
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like the others said, i would check the inlet manifold gasket or vacuum leaks at that end of the manifold. or do a compression check, could be valves or head gasket. ae's are very common for head gaskets on cyl 6.

 

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Posted: Sat Oct 15, 2005 2:38 pm 
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I'm sure that your problem is either manifold gasket or head gasket.
I have a 89 ea fairmont with a cpi engine with the same problem. Both the inlet manifold gasket on number 3 and the head gasket is leaking, luckily head gaskets only cost around $40 N.Z(Repco / supercheap) or $150 for a genuine ford head gasket

 

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Posted: Sat Oct 15, 2005 3:47 pm 
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where did all my posts go?

 

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Posted: Sat Oct 15, 2005 9:24 pm 
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GET SOME WD40 SPRAY NEAR 6 INLET MANIFOLD IF CHANGE OCCURES CHANGE INLET GASKET. DO A COMPRESSION TEST COULD BE A WORN CAM LOBE OR LIFTER.GOOD LUCK
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Posted: Wed Oct 19, 2005 10:38 am 
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ended up being the manifold gasket. dad doesn't trust me with it so he is taking it to ultra tune tomorrow and its gonna cost $190.

Thanks for the help
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