[V8] Engine Still Not Running Smoothly ...

[Dave Saad]

Ahhh I love that sound...
And the V8 with the filter and housing off sounds like it will suck  
bunnies right out of their little bunny holes.  Even better than my  
dad's old '68 GMC with a 327 and 4 barrel quadra pig carb.  That thing  
could easily go through a set of rear tires in a single night too.  I  
wonder why he never let me drive it...

Dave

On Nov 9, 2009, at 12:42 PM, D Morralee wrote:

>
> maybe I'm off track but is the air filter and V8 cover on the engine  
> when you hear this sound ? I know when I have the airfilter and  
> cover off it sounds like a GM 350 4 carb engine :-) superdave
>
>> From: urq at pacbell.net
>> To: v8 at audifans.com
>> Date: Sun, 8 Nov 2009 12:09:51 -0800
>> Subject: Re: [V8] Engine Still Not Running Smoothly ...
>>
>> Thanks for the quick response Jason and Ingo,
>>
>> Sorry that I wasn't clear in my description, the "shhhhh" sound is  
>> clearly coming from the intake manifold. It is a pronounced and  
>> sharp sound, sounding much like my recollections of an unfiltered  
>> multi-barrel carburetor idling back in the olden days. I don't  
>> recall hearing this sort of a sound from a PT motor before ...
>>
>> I'm pretty sure the source of the sound is the ISV.
>>
>> Steve Buchholz
>>
>> -----Original Message-----
>>
>> As have I -- crack in the line (black hard plastic) underneath the  
>> passenger strut to mount. Hissing sound and cause of elevated idle.
>>
>> Ingo Rautenberg
>>
>> -----Original Message-----
>> From: Jason Wilkerson
>>
>>
>> When I first bought my v8 there is a frequency valve under the  
>> passenger front fender - it had a rip in the diaphram - made a  
>> hissing sound. Also, I've seen the hose going to the FPR rip and do  
>> the same thing. Worth a look.
>>
>> --- On Sat, 11/7/09, urq <urq at pacbell.net> wrote:
>>
>>> When I got the engine back together I
>>> left the big cover that holds the air
>>> filter in place off (the air filter was installed).�
>>> The engine does seem to
>>> run more smoothly � perhaps due to the fact I had to mess
>>> with � of the
>>> spark plug wires when I pulled the distributor.� I�m
>>> still thinking the
>>> engine is a bit down on power compared to the other car �
>>> but perhaps this
>>> is due to the cams from the automatic engine �
>>>
>>>
>>>
>>> As those who have pulled this cover know, the engine intake
>>> sounds are much
>>> more audible with the cover removed.� One thing I
>>> noticed was that I could
>>> hear a variable hissing at idle.� I�m thinking it is
>>> the ISV, and perhaps a
>>> sticky ISV � but it did seem to cause a bit of rough
>>> running.� I
>>> disconnected the ISV and kept the engine running by
>>> cracking the throttle a
>>> bit, no hissing.�
>>>
>>>
>>>
>>> I�m going to use the carb cleaner method to see if the
>>> ISV is sticky, but if
>>> any others out there have had to deal with similar issues
>>> and have something
>>> to share I�ll appreciate hearing from you!
>>>
>>>
>>>
>>> Steve Buchholz
>>
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