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Original Message
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| RE: Cylinder not firing |
| By John - 09/07/2002 8:15:21 AM; IP 142.177.6.156 |
| The most common problem is the distributor cap. Inspect the inside for carbon tracking and cracks. Likewise the top and underneath of the rotor button. Take out the plug and ground it with the ignition wire attached. Is there a spark? Sparkplugs may fire with this test, but not under cylinder pressure. Swap the plug with another and see of the problem changes cylinders. (Dead cylinder is identifiable if removing the ignition wire doesn't affect engine idle..be careful...shocks are no fun) Swap ignition wires and see if the problem changes cylinders. Do you have too much clearance between the Pertronix sensor and the magnetic ring? Maybe one of the magnets is of less strength and won't trigger the sensor. Remove the valve cover and plugs and rotate the engine. Do the valves operate up and down properly (no sticking, broken springs, worn cam lobe, etc.) A compression test should be done which will tell you the same thing...maybe more. |
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