HEI missfire

[voyager]

I drove the coach around the block today.. Engine
started missing a little. Maybe I have a pair of
plug wires crossed??? I have HEI ignition, whats
the number 1 plug on the cap? How can I tell?
The picture in my service manual is the old
style cap.
Thanks,
Rob Teed 74 Painted Desert

 

[voyager]

I have the firing order stamped on the engine.
Just think I crossed two wires when I hooked
them back up. Should be able to tell now
with this info.
Thanks,
Rob Teed

> -----Original Message-----
> From: owner-gmcmotorhome
> [mailtowner-gmcmotorhome]On Behalf Of
> EMERYSTORA
> Sent: Tuesday, April 20, 1999 12:33 AM
> To: gmcmotorhome
> Subject: Re: GMC: Re:HEI missfire
>
>
>

>
> the number 1 plug on the cap? >>
>
> The number 1 plug on the cap is the third one from the electrical wire
> connectors to the cap looking in a clockwise direction.
> (although someone
> may have changed them to other locations. It is the firing order that is
> important. Your distributor is going in a counter clockwise
> direction. That
> means that #8 is to the right of #1 going counterclockwise.
>
> To determine which wire is #1 just check the wire going to the
> driver's side
> front plug. Follow that back to the distributor and that'll be #1.
>
> Your pistons are numbered as follows:
>
>
> 1 2
> 3 4
> 5 6
> 7 8
>
>
> I've forgotten the firing order and my manual is in the GMC. It
> starts with
> 1 then 8.
>
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
>