New Chev Firing Order
WAYNE JOHNSON
flying.monkey at juno.com
Thu Oct 22 16:26:32 GMT 1998
Cylinders 4&2 fire 90deg. apart instead of 5&7. My guess is it has to do
with crankshaft harmonics.
On Thu, 22 Oct 1998 07:05:44 PDT "Bill the arcstarter"
<arcstarter at hotmail.com> writes:
>It was written:
>>> While working on this 99 Chevy truck I found they changed the
>firing
>>>order from 18436572 to 18736542......since it is coil on plug I only
>
>found
>>>this out by checking the camshaft....does anyone know why the firing
>
>order
>>>change and is the 98 vette the same???????
>>>-Carl Summers
>
>I heard some story about ignition cross-fire inside the distrib.
>Something about the adjacent cylinder (on the distrib tower) being on
>the intake stroke accidentally firing instead of the one under
>compression. Perhaps the firing order was changed to reduce this
>effect?
>
>Just a guess.
>
>-Bill
>
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