Breakdowns are never convenient.
Whether there is a favorable cranking order in the van and it spins over on the other hand fails to begin, there are three essential systems that must daily grind properly and should be checked. The fuel and air government is one. Extremely even or as well minor of either one of these and the engine Testament not foundation. Moment is the ignition action. Not by oneself is a Glimmer required to flame the fuel, it must be delivered on age and in the honorable deposit. Carry on is the engine sincerity. It must compress the fuel and air, include the explosion upon ignition and alter heat coercion to mechanical power to drive the vehicle. A breakdown in any of the three Testament prevent the engine from starting.
Instructions
1. Eccentric person the motorcar. Listen to the engine. An experienced Chauffeur should depend on his ears and be cognizant the sound of the engine. Whether as it cranks the sounds are abnormal, this is a Powerful comment of a mechanical failure. Everyone cylinder, when fixed and working flourishing, compresses the fuel and air in Correct sequence. When this fails due to a timing belt or head gasket problem, everything sounds different. If the engine sounds entirely different while cranking, mechanical repairs are necessary.
2. Some have fuel pressure specs as low as Thirty five psi. If there is no reading, the fuel pump is in doubt. Turn the key off, and the on again, and listen for a brief, faint hum in the fuel tank. The pump is designed to run, then shut off if the vehicle does not start. Install a fuel pressure gauge. If the engine sounds as it normally does install the gauge, turn the key on and watch the pressure indicator. It should read as high as Fifty psi. Refer to the manufacturer's service manual for specifications and fuel pressure test procedures. If there is no fuel pressure and no hum, the fuel pump or pump circuit has malfunctioned. Make sure there is fuel in the tank.
3. Test the ignition system. Remove a conveniently located spark plug wire from a spark plug and install a spark tester. This is a spark plug with an alligator-clip attached. Clip the tester to the engine. This completes the circuit so the spark can jump across the plug electrode. Make sure the clip is attached to bare metal for a good ground. Have an assistant crank the vehicle and watch for a bright spark. If there is none, the ignition system must be repaired.
