Bill -
Also consider intake/exhaust manifold leaks. Try spraying with water
(slows down) or starting fluid (speeds up) while the engine is idling.
Clay L.
At 10:37 PM 9/4/01 -0400, Bill Gilroy wrote:
>I have some basic tuning questions. I am not very good at tuning cars
>so I have some questions. My 77 Midget was running fine and over the
>course of about 1K miles it developed a miss, then a stumble, now it
>runs rough. Sometimes when you press the accelerator pedal down it bogs
>down and misses even worst. Since one lister said that "70% of
>carburetor problems are electric", I figure that is where I will
>start. What I could use is a good basic book or trouble shooting
>guide, that tells me where to look and how to check if the components
>are still good. The car is a 1500 Midget with twin SUs and a
>mechanical dizzy. I figure I should check the following, but the list
>is not in any real order:
>
>1. Valve lash.
>2. The coil polarity.
>3. That the ballast resistor is wired correct.
>4. The points (check for pitting) and gap.
>5. Not sure how to check if the condenser is good.
>6. Spark plugs.
>7. Spark plug wires (not sure how to check)
>8. Dizzy cap and rotor.
>9. Vacuum advance.
>10. Vacuum leaks.
>11. Carb balance.
>12. Carb mixture.
>
>Any pointers to some good sources would be helpful. I could just swap
>components but I think I would do better with an ordered list and an
>idea of the effect of each swap, so I know what to expect and if it
>makes a difference.
>
>--
>Later,
> Bill mailto:w.gilroy@verizon.net
>
>"Facts are the enemy of truth"
>77 Midget
>90 Shar-Pei
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