Mick,
re:
"By the way, all ignition components are new and the valves are adjusted
properly."
Just 'cause the components are new doesn't mean they're good. I've had
bad points right out of the box cause similar symptoms. I also haven't had
any luck with anything but Lucas distributor caps (go figure ;).
What kind of spark plug wires are you using? Anything but copper core
can be problematic.
bs
********************************************
Bob Spidell San Jose, CA bspidell@pacbell.net
'67 Austin-Healey 3000 '56 Austin-Healey 100M
********************************************
----- Original Message -----
From: "Mick VanderPloeg" <MVANDERPLOEG@nc.rr.com>
To: <healeys@autox.team.net>
Sent: Sunday, May 09, 2004 1:32 PM
Subject: Carbs fixed, but still runs rough
> A few weeks ago, I was trying to adjust the mixture on my "H" type
> carburetors, & accomplished nothing other than causing a fuel leak. So, I
> rebuilt the carbs (with the jets polished smooth), and it appears that the
> leak has indeed been stopped. While I was in there, I also discovered, as
> someone on the list had suggested, one of the adjusting nuts had frozen to the
> jet bearing. So, with the carbs installed and both adjusting nuts turning
> freely, I adjusted the mixture until the engine sped up slightly and then
> settled to normal when the piston was lifted. I went out for a test drive,
> hoping to have solved the problem I was having in the first place, which was
> rough running under load. No dice.
>
> The engine fires immediately and revs very smoothly, but, under acceleration
> runs very roughly. The problem's more pronounced above 2,800 - 3,000 rpm.
> The fuel pump's new, there's a new filter between the tank and the pump, the
> fuel lines are new, and the screens in the carburetors are clean. I did have
> the tank cleaned up and "sloshed" with sealant early on in the restoration
> (before I found out this was a bad idea). Could the "sloshing" have gummed up
> the fuel pickup in the tank? Would this cause the problem I'm describing?
>
> By the way, all ignition components are new and the valves are adjusted
> properly.
>
> Thanks,
>
> Mick Vander Ploeg
> '57 BN4
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