The text for this Guide originally appeared in the 23rd edition of Motor's Repair Manual, published in 1960 and copyrighted by Motor Information Systems, and is used with their permission.
When an engine fails to start, the chances are that 90 per cent of the cases will involve the ignition system and seldom the fuel system or other miscellaneous reasons. If a systematic procedure is followed the trouble can almost always be found without the use of special equipment.
To begin with, turn on the ignition switch and if the ammeter shows a slight discharge (or if the telltale lamp lights) It indicates that current is flowing. A glance at the gas gauge will indicate whether or not there is fuel in the tank. Operate the starter and if the engine turns over freely, both the battery and starter are functioning properly. On the other hand, if the starter action is sluggish it may be due, got to Starter Circuit Checkout. Otherwise, if the starter circuit is okay, skip this phase of the discussion and proceed to Primary Ignition Checkout.
First, the "Checkouts" below should go a long way to help you uncover the cause of why your engine won't start. However, if further diagnosis is necessary, refer to the "List of Symptoms" below.
Due to Open Primary Ignition Circuit
Due to Grounded Primary Ignition Circuit
Due to Faulty Secondary Ignition Circuit
Due to Excessive Fuel Supply (Flooding)
Due to Insufficient Fuel Supply
Engine Starts but Won't Drive Car
Lack of Power or High Speed Performance
Oil Pressure Relief Valve Leaks
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