I don't know the 77 Midget closely, but I assume the car would have had one
or more carbs of a different type before.
The angle the HS4's are mounted to the inlet manifold maybe of influance.
The floatchambers should be more or less right upwards.
This will enable a correct and horizontal fuel level and a proper movement
of the float.
Is this so?
Cheers,
Hans BGT with HS4's as well
-----Original Message-----
From: paul.hunt1@virgin.net [mailto:paul.hunt1@virgin.net]
Sent: vrijdag 10 november 2000 20:45
To: Dan Dwelley; mgs@autox.team.net
Subject: Re: HS4 overflow problems
You say 'carbs', are they both doing it? I wouldn't expect that if it were
a problem with the floats or float valves. Why does it come out of the carb
mouth and not the overflow? Do you have emisions kit plumbed in? Have you
tried it with the hoses disconnected from the float-chamber overflows? I
suspect that if the overflows are blocked i.e. within the emissions plumbing
air-pressure build-up stops enough fuel getting into the float chambers to
lift the floats to shut the pump off, so it keeps pumping till it comes up
though the jet and out the carb mouth.
PaulH.
----- Original Message -----
From: Dan Dwelley <ddwelley@excite.com>
To: <mgs@autox.team.net>
Sent: Friday, November 10, 2000 2:17 PM
Subject: HS4 overflow problems
> Hello all,
>
> Well...the 77 Midget has its new engine and it's running...sort of.
> I have the 1500 Tr$*!h engine with the UK spec twin HS4 carbs. Here's the
> issue:
> The car starts great but after running for about a minute the float bowls
> start overflowing and gas pours out the mouth of the carbs.(not a good
thing
> considering the cat. is just below the carbs.
> Now...this is what I have done but the problem still exists.
> I've replaced the float bowl lids, floats, needle, and seats. I've tried
> turning the lids to a different position. The fuel pump is the standard
> mechanical pump. I have not replaced this as of yet but I do have a new QH
> mechanical pump that I may try.
>
> Any other ideas will be greatly appreciated.
>
> Thanks in advance,
> Dan
>
>
> Dan Dwelley
> 77 Midget
> Alexandria, Va.
>
>
>
>
>
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