<VV> Bad listening... wrong diagnostic

[J R Read_HML]

I'm not sure that I fully understood your description....

But (to me) a chirp sound is a leaky head gasket or a dry rocker ball.  How 
is the rocker dry?  Somebody installed the push rod with the wrong end up 
(out).  That, or the rocker is very tired and near the failure point - but 
that can also sound a bit like a knock (but not really a ping).

OK... I don't need to see a bunch of emails distinguishing a knock and a 
ping - they are MY EARS.

If it is EITHER of these items, it seems as if you should have at least been 
able to isolate which side of the engine to start on first (is that 
redundant?).

It is possible that with your work, you have managed to sort of accidentally 
lube the offending part and it will be quiet for a little while.  Did you 
check if the push rods are in correctly?


I'll reiterate that I may have not correctly understood the question. 
Reiterate is NOT a musical instrument.

Later, JR


----- Original Message ----- 
From: "D. Monasterio" <dmonasterio at megared.net.mx>
To: "Corvanatics" <corvanatics at corvair.org>; "virtualvairs" 
<virtualvairs at corvair.org>
Sent: Friday, June 06, 2008 5:25 PM
Subject: <VV> Bad listening... wrong diagnostic


>    About a month ago my 62 Rampside started with some kind of chirping 
> noise (pinging ?), coming from the engine (110) at accelerating or under 
> load. I associated this noise with timing or using of regular gas so, 
> tried premium... no success, retarded time... no success... disconected 
> vacuum advance... the same.
>    Decided to drive real gently till my neurones could find a solution... 
> no success. A week ago stored it and took "El Andariego" (67 cpe), filled 
> up the tank accidentaly with regular (it likes premium) and, after a few 
> miles, started pinging. Then, I began thinking (?) that this noise was 
> similar but, not the same as in the Rampy. Could be a loose head ? or bad 
> head gaskets ?
>    This morning, lifted her up, checked upper head nuts... good. Removed 
> valve covers, then rocker arms (one by one) on right head... all good. 
> Went to the left head where 5 of the 6 rocker arm studs came out while 
> loosening the adjusting nuts. Readjusted all the stuff hoping the head 
> gaskets were still good. Started engine, connected vacuum advance hose, 
> advanced timing some 5 degrees, took her out for testing.... no more noise 
> and the engine feels and responds real good.
>
>    I think that many of you could have differentiate easily between 
> pinging noise and head gasket leaking noise but, think that I need to 
> replace the interface between my ears and brain. I should pay more 
> attention the next time.
>
>    Daniel Monasterio
> PS. Will miss Ventura (sniff) but... the GB is not finished yet.
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