Classic Mustangs List Archive

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Mail From: Pielzner (email redacted)

Thanx for the reply Mike!
but.......
As I understand it, newer Holley's have a power valve blowout protection
system, as explained in past posts. Unfortunately, my holley has this, and I
checked the power valve and it is not blown.
So I still haven't solved the problem. Any other ideas?

thanx
Marcus Miller
(email redacted)

68 coupe Pearl White (Massively rich)
68 coupe red/blue/primer (Paint once the x-mas bills are gone)
6 t-bird town landau 390

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Mail From: Wright, Matthew (email redacted)

Hi Marcus,

A couple of things to check.......Be sure float height is set correctly
for both bowls. Do you see gas dripping out of the boosters at idle?
If so, check the needle and seat on both bowls. If running an electric
fuel pump, make sure pressure isn't too high (5-7 psi on a Holley is
correct). Regarding power valves, if you are *sure* there isn't a
rupture, note the number on the valve itself. This indicates at what
vacuum the valve opens. If for some reason your engine produces little
vacuum at idle (big cam), it's possible the valve is opening and
richening the a/f ratio. This is unlikely though. Is this carb stock
or has someone modified it? Typically, Holleys are supplied with
jetting very close for the average installation. Under what rpm/driving
conditions is the car rich? How are you determining this?

Thanks,
Matt Wright
'65 K-Model FB


> ----------
> From: Pielzner[SMTPemail redacted)]
> Reply To: (email redacted)
> Sent: Tuesday, January 20, 1998 10:40 AM
> To: Multiple recipients of list
> Subject: [CM:8656] Re: carb jetting/power valves
>
> Thanx for the reply Mike!
> but.......
> As I understand it, newer Holley's have a power valve blowout
> protection
> system, as explained in past posts. Unfortunately, my holley has this,
> and I
> checked the power valve and it is not blown.
> So I still haven't solved the problem. Any other ideas?
>
> thanx
> Marcus Miller
> (email redacted)
>
> 68 coupe Pearl White (Massively rich)
> 68 coupe red/blue/primer (Paint once the x-mas bills are gone)
> 6 t-bird town landau 390
>
> ---------------------------------------------------------------------
> For information on Subscribing and Unsubscribing as well as a list
> archive please visit:
>
> antler.webworks.ca/cm
>

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For information on Subscribing and Unsubscribing as well as a list
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