G'day
I have the same in the BN3. It was there when I bought it in 1974 and
has been there since I finished its restoration in 1985 and apart from
the magic booming sound on acceleration I think it's the best noise that
comes from the car. All four of my kids have grown up with the car and
each have come to call the sound "popcorn".
I have lost count of the number of times I have removed and refitted the
carbs and exhaust system and would say that it's not caused by a leak in
the system. However if you were to look at any competition car (no the
BN3 is far from being one) it belches out a flame when the driver backs
off and makes a similar noise albeit far louder.
"Popcorn" sounds great and I won't be doing anything to stop it.
Hoo Roo
Patrick Quinn
Sydney, Australia
1947 Healey Duncan Saloon
1954 Austin-Healey 100 BN3/1
-----Original Message-----
From: MOWOGMAN@aol.com [mailto:MOWOGMAN@aol.com]
Sent: Wednesday, 9 June 2004 1:53 PM
To: andy65@snet.net; healeys@autox.team.net
Subject: Re: pop and snap backfire on deceleration
In a message dated 6/8/2004 10:48:30 AM Central Daylight Time,
andy65@snet.net writes:
When I decelerate I often get loud pops and snaps and sometimes a
backfire that sounds like the crack of a rifle shot. Only happens when
decelerating briskly and foot is off the pedal or less than one quarter
In general this means a leak in your exhaust manifold, a similar sound,
although less dramatic on acceleration means a leak in your intake.
I'd look at you exhaust manifold gaskets, and any joints (cracks?) near
your
manifold.
good luck
John
Oostburg, WI
Home of:
1960 Austin Healey 3000
1960 Austin Mini 850 (with 1380, lowered, etc)
1957 BMW Isetta 300
1969 Austin America
1980 Triumph TR7
1939 Dodge business coupe (patiently awaiting rebirth)
2003 Mini Cooper S (get one of these!)
**********************************************************************
This message is intended for the addressee named and may contain
privileged information or confidential information or both. If you
are not the intended recipient please delete it and notify the sender.
**********************************************************************
|