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
>
>______________________________________________________
>Get Your Private, Free Email at http://www.hotmail.com
>

___________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com
or call Juno at (800) 654-JUNO [654-5866]



More information about the Diy_efi mailing list