1993 prelude will crank but wont start. What could be the problem?

1. What would cause an engine to crank but not turn over?
2. How do you diagnose crank no start?
3. Can a starter cause crank no start?
4. What sensors can cause a car not to start?
5. Can a bad ignition coil cause a car not to start?
6. What happens when the crankshaft position sensor goes bad?
7. How do you test a coil with a screwdriver?
8. Why the ignition coil does not spark?
9. What would cause no spark from coil?
10. What happens when a ignition module goes bad?

What would cause an engine to crank but not turn over?

Clogged Fuel Injectors

If the car cranks when you turn the key, but the engine won't start, it could be because fuel isn't getting to the engine. One potential reason for this could be dirty fuel injectors. Over time, the fuel injector nozzles can become clogged with rust, corrosion or debris.

How do you diagnose crank no start?

Ignition timing on a no-start can be confusing, but it can still be tested by connecting a timing light, then watching the timing marks while an assistant cranks the engine. While this may or may not be base timing as specified by the manufacturer, it does let you know where the spark is occurring.

Can a starter cause crank no start?

In some instances, a weak starter may crank the engine fast enough but prevent it from starting because it draws all the power from the battery and does not leave enough for the injectors or ignition system.

What sensors can cause a car not to start?

A bad Crankshaft Position sensor is a common cause of no starts. The signal from this sensor goes to the PCM or ignition module that switches the ignition coil(s) on and off. If you have an RPM signal, a bad ignition module or PCM may not be switching the coil(s) on and off.

Can a bad ignition coil cause a car not to start?

Difficulty starting your car's engine could indicate a problem with your ignition coil. As explained above, most modern engines have multiple ignition coils. If you have several bad ignition coils, you could have a faulty ignition and difficulty starting your engine.

What happens when the crankshaft position sensor goes bad?

Vehicle is Stalling and/or Backfiring

Along the same lines as the symptom above, a problem with your crankshaft position sensor could cause your vehicle to stall and/or backfire. Stalling is more common than backfiring as the interruption of the crankshaft signal can cause the engine to be cut off.

How do you test a coil with a screwdriver?

Use a screwdriver to test the insulation of the wires.

Tie the other end of the wire to the ground source Then drag the screwdriver tip down the length of each spark plug wire, around the coil, and the boots. If you see an arc from a wire to the screwdriver, you have defective wire.

Why the ignition coil does not spark?

If the ignition coil does not have spark, it's time to check its wires. Use a test light to check the continuity on the signal wire and power wire on the ignition coil. If both wires are functional but the coil fails to produce spark, the ignition coil or the ignition control module is bad.

What would cause no spark from coil?

There are a few reasons for no spark, new coil pack could be defective, crank sensor, ignition module or bad wire in primary circuit, faulty ECM/PCM. You may have to have a good technician have a look, diagnose and estimate repair. Second link gives detailed instructions for testing and diagnosing coil pack.

What happens when a ignition module goes bad?

a faulty ignition module can affect ignition timing, resulting in an engine that misfires and runs rough. the engine may also run well at low speed, but won't accelerate well. 3. stalling: a failing ignition module can occasionally prevent the engine from getting spark, causing it to stall.