I am refering to the same device ie the Auxillary starting carb. I became
confused because the needle is refered to as the Accelerating needle in the
parts catalogue which I had just been reading.
Graham----- Original Message -----
From: Mark Stephenson marks@trnpa.com
To: saloons@jag-lovers.org
Sent: Friday, June 02, 2000 6:07 AM
Subject: Re: [Saloon-lovers] Introduction
Incorrect needles would make the mixture too rich or too lean, but because
the air flow across the opening is drawing the gas from the float bowl, it
couldn’t possibly draw enough to cause it to pour out the intake side of
the
carbs.The only thing I can think of that would cause this, is if the fuel is
literally being pumped out around the needle. The only way that could
happen, based on the DPOs previous repairs, would be if the float needle
periodically stuck which would normally cause the engine to suddenly go
very
rich and a stream of gas to flow out the overflow tube. What if the PO
didn’t like the thought of all that gas poring onto the ground and he
somehow blocked the overflow?I’m not sure what you mean by the “accelerating carb.” There are dual HD6
carbs and a starting carb for enriching the mixture at startup. Other than
that, there are no other fuel/air mixing devices on the car.I’d check the float bowls, and make sure you can get liquid through the
overflows.“Mark 1” Mark Stephenson
1952 XK120 Roadster #S673129 (w/XK140 engine and C head)
1958 3.4 Litre Saloon / 1984 XJ6 4.2L / 1985 XJ6 VDP / 1986 XJ6 VDP
Jaguar Club of Central Arizona (USA) – Internet Service Provider, TV & Phone | Sparklight----- Original Message -----
From: “Kat moseley” <@Kat_moseley>
To: saloons@jag-lovers.org
Sent: Thursday, June 01, 2000 3:40 PM
Subject: Re: [Saloon-lovers] IntroductionThanks for all the advice still coming in from various people I don’t
believe that the cam timing is out as I have double checked this and
also
it
is unlikley that the engine would have started and idled Ok previously.
I
have managed to get the engine to run for a few seconds by disconnecting
the
pump, holding full throttle and ignoring all the fuel spewing out. It
will
start and run very intermitently for about 5 - 10 secs then pick up and
rev
just before dying as you would expect as it runs out of fuel. This
suggests
to me that the problem is with the carbs. A thought has just occurred to
me - as the PO was dumb enough to fit the incorrect rotor arm it is
possible
that I have the incorrect main jet needles. I don’t know if this would
cause
such a drastic fault. I stripped the carbs down tonight and checked the
diaphragms - they both were flexible and I could not see any damage to
them - but this sounds like a good theory. I think I will get new
needles
and diaphragms and see what happens. The starting solenoid is working Ok
and
the level in the accelerating carb is also Ok. It doesn’t make any
difference if the starting solenoid is disconnected or not.
Just to make sure of the cam timing I have had the cam covers off and
turned
the crank manually whilst checking that the valves are going up and down
in
the correct order and at the correct time and so I am fairly certain
that
this part is OK.I will let you all know what happens after fitting new carb bits.
Graham
1962 MK2 MOD 3.8