[V8] Starting Problems

[dsaad at icehouse.net]

I am a little confused Steve -
The factory plug is a standard single electrode, and the most reliable cheap
replacement was a off-the-shelf Champion single electrode.
(sorry - can't remember part# now)

The multi-electrode plugs (at least the +4) do not get good reports in a V8. I
yanked mine and went back to OEM, although I now think my real problem was my
fuel pump relay (below).

I also had a hard starting problem that turned out to be the fuel pump relay.
Symptoms were like what you describe. One tell-tale sign is that the engine will
often start just as you release the key, or will start quickly on the second
try, no matter how long you crank it the first time. It turns out that the fuel
pump and ignition both get their power from the fuel pump relay, but from
seperate contacts. Clean/adjust the contacts or just try a new relay.

On the fuel pressure, that does sound a little high, but the actual numbers are
specified in the manual.

And on the engine temp sender, make sure you have the right one and it is
working!
I remember some confusion over weather it is the variable resistance sender -
same as for the temp guage, or a switch. I believe the correct part is the
resistance sender, which (again relying on foggy memory) is white, and the
switch type is black.

Dave


Quoting "Buchholz, Steven" <Steven.Buchholz at kla-tencor.com>:

>
> The shop is reporting that the fuel pressure is excessive (~90PSI), and the
> tech is not able to get the pressure down.
>
> At one point he mentioned that the spark plugs appeared to be wet with fuel,
> and I shared with him that there were some on this list who had troubles with
> the factory specified spark plugs.  I did not remember what the general best
> recommendation was.  I did tell him that I personally have not had a problem
> with the factory quad ground $15 each units.  I also questioned whether or
> not he had replaced distributor caps and rotors ... or ignition wires.  He
> was not aware of any changes there.
>
> I thought I'd post the situation here to see if there were any other
> suggestions for fixes on excessive cold cranking situations.  Feel free to
> respond to me or to post back to the list and I'll pass along the feedback
> ... perhaps we can marshal a new V8 owner to join our group!
>
> Thanks!
> Steve B
> San José, CA (USA)
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