Russell writes:
> Hello,
>
> I have been having problems recently, with the way that my '65 series V
idles.
> The engine runs rough, not firing on all cylinders, unburnt petrol smell
from
> exhaust. The car runs fine when accelerating or running at over 2000rpm
>
> I replaced all the contact breaker, rotar arm, distributor cap, condensor,
> plugs, plug leads and tried a different coil. None of which seemed to make
a
> difference.
>
> Anyone out there had the same problem / know what else to try / Wild ideas
?
I was having the same problem not too long ago. It's probably an incorrect
fuel/air mixture ratio. It could be just as simple as adjusting the mixture
with the screws at the bottom of the carburetors. But, as in my case, that
wasn't the problem - a complete overhaul of both carbs was needed. And it
wasn't as difficult to accomplish as one might think! (I did it all in about
a weekend.) I ordered a pair of Stromberg 150 rebuild kits (around $20.00
each). In addition to the rebuild kits, I obtained new needles and new
damper assemblies; all for about $50.00. And while I had the carbs off the
car, I replaced as many of the nuts, srews, and springs as I could for the
carb linkage.
I cleaned all the carb parts, put all the new pieces in and on, and returned
the carbs to my car (since I took the carburetor manifold off, I needed to
replace the carburetor/exhaust manifold gasket). I used Colortune (which,
BTW, is manufactured in the UK) to adjust my fuel / air ratio, and the car
has been running great ever since - idling correctly (900 rpm) and running
well at high rpm. I was finally able to pass California smog requirements
and I'm getting about 25 mpg!
NOTE: It's crucial to make sure the air valve pistons move up and down
freely - the needle must centered exactly to jet assembly for this to happen.
I also found that on my carburetors, the suction chamber covers are slighty
askew and that also impeded the air valve pistons from moving freely. I had
to make sure the covers were seated and tightened correctly - to get it
seated right, some of the screws are tighter than others. I used Locktite on
the screws once I found the correct configuration. And lastly, don't
disregard the damper oil! It'll really help the carbs perform better!
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