At 06:05 PM 11/5/02 +0000, Michael Hargreave Mawson wrote:
>Problem 1.
>There is a very loud BRRRRRRRRRRR noise from under the bonnet (on a
>descending note) when decelerating through 4000 rpm. It starts when
>the engine speed drops to about 4000 rpm and has gone by the time it
>reaches about 3900 rpm.
When I have driven my car with the transmission tunnel cover removed,
I have heard the same sort of thing: A loud, funny rattling noise only
during overrun in a narrow RPM range. I could never figure out
what it was. When the tunnel cover installed, it is almost
impossible to hear.
Anyway, you're not alone...
>Problem 2.
>Having left Crete in a temperature of around 87F yesterday afternoon,
>and collected my car at Gatwick Airport in a temperature of around 35F
>last night, I drove for a while with the windows shut. The car stinks
>of petrol, even an hour after the choke has been pushed in. I hadn't
>noticed this previously - but then I've never driven the car with a
>hard-top on and the windows wound up before. Fuel consumption seems to
>be good, so I don't suspect a large leak anywhere. What else should I
>be looking at? Breather pipes?
I started getting a gas smell, and it turned out to be a crack in the
gas tank. It was about 4 inches long, horizontal, right in
the middle of the rear surface. It was almost invisible, except that
there was a slimy film of dried gasoline residue beneath it.
I took the tank to a radiator shop, and they soldered a patch over
the crack.
Time to pull off the panels on the front and back of the gas tank
and have a careful look. Also check carefully the line from
the tank. Between the tank itself and the main pipe that
runs along the chassis rail, there are about 6 joints and bits
of rubber hose.
Doug Braun
'72 Spit
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