What causes a car not to get spark?
Loss of spark is caused by anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. This includes worn, fouled or damaged spark plugs, bad plug wires or a cracked distributor cap.
What causes a car to have no spark?
Another common cause of a no-start condition is no spark, or no ignition. It’s the first thing I check for with a crank/no start condition. No-spark conditions can have a number of causes, but for starters, we need to know if we have spark when we crank the engine.
What to do if there is no spark at the ignition coil?
Check for voltage output at the ignition coil. Disconnect the ignition coil wire from the distributor and install the spark tester to the wire and ground the tester to the engine. Crank the engine for a few seconds. If there’s spark, the problem is with the distributor cap or rotor.
Can you check all fuses at the same time?
To check all fuses! Read the Haynes books, the data on distributor rotations is wrong. Forget you can check for spark with the timing light cranking, and see the cam has in fact slipped. Pull the distributor, unless you learn how to re-time it from scratch.
Do you check for spark in no start?
In fact, with a crank/no start condition, I often check for spark first since it’s usually the easiest thing to check. Just be careful, as some ignition systems pack quite a punch and you don’t want to get shocked during your testing.
Why is there no power to half my fuses?
No power to half my fuses. Car was crunk ford electrical Q: No power to half my fuses. Car was crunk I have a 03 Ford Expedition 4.6 liter engine with FWD. Had to change out the fuse box. Now I’m not getting power to half of the fuses.. plus my check charging system light is on. Battery & Alternator is good.. please help??
To check all fuses! Read the Haynes books, the data on distributor rotations is wrong. Forget you can check for spark with the timing light cranking, and see the cam has in fact slipped. Pull the distributor, unless you learn how to re-time it from scratch.
Check for voltage output at the ignition coil. Disconnect the ignition coil wire from the distributor and install the spark tester to the wire and ground the tester to the engine. Crank the engine for a few seconds. If there’s spark, the problem is with the distributor cap or rotor.
What to do when your engine has no spark?
If there’s no spark or the spark is weak, check the resistance of the wire that connects the ignition coil to the distributor cap. Consult the wire resistance specifications in your repair manual.