Jeff,
Did you try a new set of plugs? Last year, I had a sudden miss on my 72
6 and I tried everything from points, to condenser, cap, rotor, wires
and coil with no resolve. For some reason, I replaced the plugs with the
originals that came with the engine and the miss went away. The original
miss-fire was intermittent.
So I bead blasted the plugs that were in the engine when the miss
started and refit. Same miss! So those plugs went in the trash and I put
in a new set and haven't had any problem since. I then leaned up the
mixture (Hitachi HS6), then checked the plugs after about 100 miles.
Very clean.
I am convinced that it was not a rich mixture, but a defective plug or 2.
If I ever have a similar miss-fire, the plugs will be the first to test out.
Bob
On 07/12/2015 08:14 PM, Jeff Scarbrough wrote:
> On Sun, Jul 12, 2015 at 4:10 PM, <FordneyNJ@aol.com> wrote:
>>
>> I had the same trouble several years ago on my TR 7. It was flooding. turns
>> out someone had installed gros jets. Got rid of them and have had no
>> trouble since. Use a standard float valve, set the floats and you should be
>> good to go. Hope that solves it.
>
> I was wondering when someone would mention Grose jets... The car came
> with them, and other than cleaning them, they haven't given any hint
> of trouble in the last 8 or 9 years. I checked them, and they shut
> off pressure when I blow through the fuel supply line.
>
> However, the problem I have is clearly fuel related, and likely too
> much of it. I thoroughly checked the ignition system, and everything
> is spot on - all plugs sparking, etc. I did beadblast the plugs just
> for fun, but no improvement. Compression is 130 all the way across -
> virtually no variation. When I pulled the plugs, some appeared
> slightly wet - but not all three plugs on either carb. But it's an
> LBC, so who knows?
>
> I had carb rebuild kits on hand, and a heat shield, for a future
> maintenance project. So, I guess I'm going to do the job a bit
> earlier than I planned. We'll see what happens...
>
> And I haven't made up my mind about the jets yet.
>
> Jeff Scarbrough
> Corrosion Acres, Ga.
>
>
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