Maybe no oil to the rocker shaft?
Regards,
David Robertson
1961 Thunderbird
1978 Triumph 2500S
1974 Triumph Spitfire
<<< Life is too short to drive boring cars >>>
http://www.robertson.org.nz/David1.htm
spitfires-owner@autox.team.net wrote on 06/04/2003 12:08:47:
> I just returned from a test drive of my GT6 after replacing my rebuilt
diff,
> gearbox and brakes. All my rebuilt systems worked great. I drove about
10
> miles to get a fill up of 93 octain. On the way home the engine started
> making unusual noises. First: a loud noise like tapping on metal with a
> wrench. Then a few minutes later it made a loud rhythmic screatching
sound
> like nales on a chalk board. I saw smoke coming from under the bonnet.
>
> I pulled over and shut down the engine. On openning the bonnet, I
noticed a
> lot of smoke (burning oil?) coming out of the small rocker cover filter.
A
> quick check showed no leaking fluids. Oil and water levels were good
and
> normal colors. I had the car towed home and let it cool down. I pulled
the
> rocker cover to see if there was any evedence of a broken push rods or
> rockers; all looked normal. I loosened the fan belt to check the water
pump
> for ease of turning and pully stabiliy; it seemed normal. I checked for
> thrust washer problems: no movement of crank shaft when pressing in
clutch
> pedal or when turn over. I pulled the plugs: all were dry and light
brown.
> The engine starts easily and runs smoothly for about five seconds, then
you
> hear the loud screatching sound again. This engine was rebuilt within
the
> last 2000 miles.
>
> What could it be?
>
> TIA,
>
> Mike
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