The #1 and #3 plugs can suffer corrosion between the ends of the plug
wires and the plugs.  This phenomenon baffled me until it happened
within six months of installing new long block, new plugs, new wires,
etc., and then having sudden poor performance within six months.  Vendor
of new plug wires, etc., suggested checking the connections at #1 and #3
plugs.  I found heavy corrosion and ends of connectors at ends of wires
almost corroded off.

Get some dielectric grease at auto parts store and apply to connections
after cleaning them.  New plug wires may be needed.

John

On Mon, 2011-06-20 at 08:18 -0400, Dominic Provini Jr. wrote:
> Hi,
>
> I have a question . . .My 85 westy is in the shop getting some work done
> and the mechanic has been trying to figure out why it sometimes fires on
> 3 cylinders and sometimes 4.  It's a 1.9l and it's starting to happen
> all the time now.  One time I will start it and it will run fine, the
> next time I jump in it and it runs horrible.  I have replaced the spark
> plug, the plug wire, the rotor and the fuel injector.  Is there any test
> he can perform to try and track down why cylinder #1 doesn't fire like
> it should?  Any help would be great...
>
> Thanks
>
> Dom