Paul,
The questions you pose are part of the puzzle. The plugs were wet,
there was moisture at the throat, yet the bowls had 1/8" or less of fuel
in them, both of them. Both Grose-Jets were new this spring. His fuel
was fresh, and put into a tank that had been cleaned. The fuel filters,
metal, were not cut open to inspect them, but the fuel line pumped plenty
of fuel to the float bowls. Once he replaced both Grose Jets with the
original MGA needles, the bowls filled and engine ran nicely.
Distributor is new Pertronics, wires are new, two sets of spark plugs
are new, compression is OK.
While it appears that the Grose Jets are the problem, the only
certainty is uncertainty. I suppose we will (or will not) know more
after he drives the car and gets more miles on it.
Bob
On Fri, 5 Sep 2008 08:47:50 +0100 "Paul Hunt"
<paul.hunt1@blueyonder.co.uk> writes:
> How can wet plugs and carb throat be too lean? That's flooded. How
> do you
> get from lean to flooded without passing through a period of correct
> mixture
> which should have fired? It sounds to me like there was more than
> one
> problem, like no ignition causing the initial flooding then the
> Grose jet
> blocking up which allowed the float bowls to empty. The only other
> possibility is that the Grose jets were flooding initially which
> prevented it
> firing, then stopped flowing altogether, which allowed the continued
> cranking
> to empty the float bowl, but it was already flooded so it still
> didn't start.
> Which is stretching things a bit. Also much of the thread mentions
> 'Grose
> jets' and 'float bowls' i.e. plural i.e. twin carbs making the
> simultaneous
> failure of both Grose jets being even more unlikely as the cause. If
> you are
> saying that once the float valves were replaced the car ran fine
> then we have
> to take that at face value, but there is nothing to say you didn't
> disturb the
> real problem along the way, which may or may not come back to bite
> you.
>
> PaulH.
> ----- Original Message -----
>
>
> Too lean to ignite doesn't mean the total absence of fuel.
>
>
>
>
>
>
>
>
> On Sep 4, 2008, at 10:59 AM, Paul Hunt wrote:
>
>
> But how could that cause a strong fuel smell and a wet carb
> throat and
> plugs, all of which are symptoms of flooding, not starvation?
> ----- Original Message -----
> What we are thinking is that there must have been some
> little amount
> of fuel getting into the bowl, enough to be sucked up and into
> the
> engine
> but not rich enough in mix to burn.
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