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cylender not firing # 6



 
 
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  #1  
Old July 8th 06, 07:11 PM posted to rec.autos.tech
[email protected]
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Default cylender not firing # 6

I have 97 f350, the #6 cylender is not firing Replaced cap/rotor/wires
and plugs. could it be the injector? how would I check that?

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  #2  
Old July 8th 06, 07:58 PM posted to rec.autos.tech
fweddybear
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Posts: 55
Default cylender not firing # 6

>I have 97 f350, the #6 cylender is not firing Replaced cap/rotor/wires
> and plugs. could it be the injector? how would I check that?


Well, one way is to swap it with a known working one and see if the
problem follows the injector. Then obviously if it did, you need to fix
it....

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  #3  
Old July 9th 06, 02:22 AM posted to rec.autos.tech
Kevin
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Posts: 146
Default cylender not firing # 6


> wrote in message
ups.com...
> I have 97 f350, the #6 cylender is not firing Replaced cap/rotor/wires
> and plugs. could it be the injector? how would I check that?
>

There are many ways to proceed with diagnosing the problem, depending on
what diagnostic equipment you have.
With a stethoscope you could listen to the injector to see if its actuating.
With a noid light you could check the injector harness connector for pulsing
voltage.
With an oscilloscope you could examine the injector voltage pattern or use
an inductive amp probe to examine injector current ramping (Proffered method
to test the injector).
With a fuel system pressure test kit you could check injector flow using a
pressure drop test.
With a compression gage you could check the cylinder to make sure the miss
is not due to a loss of compression problem. You could do a cylinder leak
down test to determine where the cylinder is loosing compression if it is
low.
With no special equipment you could swap the injector over to a good
cylinder and see if the problem moves with it, but that would require a lot
of work and would be the hardest to do.
A well equipped shop should be able to diagnose it for you in less than an
hour if you don't have the necessary equipment.

Good Luck,

--
Kevin Mouton
Automotive Technology Instructor
"If women don't find you handsome, they should at least find you handy"
Red Green



 




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