I just went through all of this on my MGB. In my case, WOT and/or climbing a
hill would render the car gutless, with horrible sputtering. A rest by the side
of the road would allow it to recover enough to move on, and downhills were
fine.
I checked ignition and timing, valves, and concluded it was fuel delivery. My
"new" tank was used from a 1966 that I had boiled out. As it turns out, my
issue seemed to be crud in the fuel lines. The filter that I have in the engine
compartment just before the carbs was so clogged it was noticeably restricted
(confirmed by blowing on it) and I got some rusty crud out of the line itself.
I took apart the fuel pump and carefully cleaned more crud from there. Before
deciding to investigate the pump side, I believed the carbs to be the culprits,
so I had already cleaned them out as well and balanced and jet-adjusted them per
the manuals. So last night, I confirmed that the pump delivers just under 2# at
the pump and also up to the carbs. New filter so I can watch for more crud. I
took it out last night and buzzed it up to redline, climbed the steepest hills I
could find, and now believe the problem is solved. I don't know if the old tank
will generate more crud.
So, I believe that while this car is way different, the principles are still the
same. Your experience sounds like what I had. I would guess that solutions
would be similar.
Jim
William Thompson wrote:
> My bug started sputterin the other day, I took the fuel line off and saw
> that I had very LITTLE flow, so I just installed a new fuel pump.
>
> I have great flow at the front carb, a little less at the rear. (is that
> normal?)
>
> Car is still sputterin
>
> It runs real good for a bit, then it starts acting up again, then it
> works, then it don't, very frustrating
>
> I have electronic pertronix (fairly new)
>
> I have checked the timing etc,
>
> Whats the next move? Should I throw the points back in and see if that
> makes a difference?
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