Hi All -
Apologies - I know this is the Austin Healey list (not the Jaguar list) but
generally speaking I find collectively you all are far more mechanically
minded than your typical Jag person, so I am asking the question here.
I believe I am having a problem with the Thermo choke unit on my Jaguar Mk
IX. The set up is identical to the early Mk1s with the thermo choke (i.e.
dual HD6s - TC on the front carb). My Mk IX is running decent at speed, but
at idle she runs very rough and keeps wanting to die. She is using LOTS of
go-juice.
I figured it just needed a tune, and went to tune the Carbies but when I got
into it, I realized that fuel was dripping from the Venturi chamber of the
front carb which is where the Thermo Choke is attached (even when the car is
warm & the TC is off).
I realized it was leaking so much fuel that the fuel was puddling on the
bottom of the Venturi chamber, probably blocking off the little hole for the
slow idle causing the very rough idle....
My question is... is it the TC causing this, or maybe do I have a cracked
diaphragm on the carby? Is there something specific that commonly causes
this problem?
I just want to be prepared before I start ripping the whole thing apart to
fix it. I already have my SU Burlen rebuild kits for the HD6s... is this
enough?
Thanks for your sage advice...
Alan
'52 A90
'53 BN1
'64 BJ8
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