How do you test a bad injector?

How do you test a bad injector?

Unplug the electrical connector from the fuel injector you want to test. Turn the ignition switch to the ON position. Touch the terminals (one at a time) of the harness connector with the test light. One of the terminals should make the test light glow, this is the injector power source coming from the computer.

Can a bad injector ruin a motor?

Left too long, a faulty fuel injector can cause serious engine damage that requires major repair. Fuel injector problems can eventually lead to a breakdown, or in extreme cases, an accident if your engine fails while traveling at speed on the highway. Be sure to treat the problem before that happens.

How much does a c7 Cat engine weight?

Engine Dimensions – Approximate

Length 41.5 in 1053 mm
Width 29.8 in 758 mm
Height 40.6 in 1032 mm
Weight – Net Dry – Basic Operating Engine Without Optional Attachments 1296 lb 588 kg

What causes injectors to go bad?

Fuel injectors typically fail due to a buildup of contaminants such as carbon. Carbon build-up can cause a clogged or partially clogged injector, preventing the injector from closing all the way. This results in a drip that creates a misfire.

How can I find out if my injector is bad?

There are two ways to locate a bad injector without spending the money taking it to the dealer for a diagnosis. Start the engine and allow it to reach normal operating temperature. Check each cylinder temperature by taking the temperature of each exhaust manifold runner as close to each cylinder as possible.

Why does my car not start with a bad injector?

Start the engine. If it starts easier and the exhaust is cleaner, you have found the faulty injector. If the engine will not start at all, it is most likely due to a badly leaking fuel injector causing low fuel pressure. If the engine starts, it is an indication of a bad injector.

What happens when a diesel injector fails to close?

Over time, diesel fuel injectors wear out and fail to close completely. When this happens they cause a leak-down, resulting in a reduction of fuel pressure across the fuel rail. This can cause a difficult- or no-start condition as well as a smokey exhaust. Too much fuel will also flood a cylinder, effectively reducing

Where is the fuel injector located on a diesel car?

The feed tube sends fuel into the base of the fuel injector, which is located under the valve cover where it extends down into the cylinder head. Use a wrench to loosen and remove the connector from the feed tube. Install the fuel feed block cap on the fuel line to shut off the fuel.