What are the symptoms of a bad injector pump? Symptoms of a bad injector pump on a Dodge Cummins 5.9L engine include a hard start, no start, or low power.
Injector Testing & Cleaning Price List
| Make | Price to Test & Clean |
|---|
| GM/CHEVY DURAMAX COMMON RAIL INJECTORS 6.6L | $50.00 each test and clean |
| VOLKSWAGEN PIEZO INJECTORS | $50.00 each test and clean |
| CUMMINS STC INJECTORS | $50.00 each test and clean |
| CUMMINS INJECTORS TOP STOP/L10 | $50.00 each test and clean |
Sounds about right for new injectors. $450*6 is $2700 and $800 labor.
What Happens When Your Fuel Injectors Get Clogged?
- Problems Starting the Engine. One of the most common symptoms of a clogged fuel injector is difficulty starting the engine, or the engine not starting at all.
- Difficulty Accelerating.
- Difficulty Idling.
- Poor Fuel Economy.
Re: Replace one or all fuel injectors? Yes. You can also just swap injectors with a "good" cylinder, if the problem follows the injector you know it's bad.
Symptoms of Leaking Fuel Injectors:
- Hard Starting when engine is hot.
- Increased Fuel Consumption.
- Rough Idle.
- Fuel odors inside and around the car.
- Poor Emissions.
- Oil thinning, which can lead to catastrophic engine failure.
- Hydro-lock, which can lead to catastrophic engine failure.
One of the obvious symptoms of a clogged fuel injector is the lighting up of the "Check Engine" light in your dashboard. The fault codes usually associated with a clogged fuel injector can range from misfire codes to lean codes. While the engine is running, monitor the engine misfire screen on your scanner.
To test fuel injectors, start by popping your car's hood while the engine is running. Place a thin metal rod or screwdriver on one of the injectors and lean your ear close to listen for an audible clicking sound, which indicates the fuel injector is functioning. Test each fuel injector in your vehicle the same way.
Fuel injectors will fail when debris (water, dirt particles, etc.) or rust find their way into the system and, after time, plug up the nozzle, the armature, or the nozzle needle gets stuck. To prevent debris from getting into the system, we recommend doing everything you can to help keep your fuel system clean.
Yes! When used regularly, fuel system cleaners can help work to remove harmful deposits and keep new ones from forming. They are especially important for engines running on gasoline containing Ethanol and fuel-injected engines.
The first and most common repair request is for fuel injector replacement. This problem affected the early editions of the 3-litre diesel engine built before August 2007 and there have been a number of updated injectors released - both from Toyota as well as aftermarket companies.
Look very closely at each fuel injector head where it connects to the fuel rail. Look for any obvious dribbling leaks or fuel spray pattern on the rail, injector body or cylinder head. Smell for gas. A leak at the injector head will indicate bad O-ring seals inside the injector body.
Fuel injector Testing
- Observe audible clicking confirming injector operation.
- Check trigger signal output from the PCM.
- Confirm the injector has power.
- Test the coil windings resistance using a volt meter.
- Confirm injector valve operation.
- Inspect the injector casing for leaks.
- Check flow and spray pattern.
Aside from idle speed, an ECU controls the ignition timing of an engine. A fuel injection ECU works by pulsing or controlling the fuel injectors in the engine. This is done by switching the injector ground circuit on or off depending on what is required by the engine.
How do I know if my injector is low impedance or high impedance? You can measure the resistance across the two electrical terminals of the injector. If the resistance is between 1.5 and 4.0 Ohm you have low impedance injectors. If the resistance is between 8 and 16 Ohm you have high impedance injectors.
There are a couple things that will cause a no-pulse condition on the injectors. First off, Check the wiring harness from the distributor to the ECM. If that harness has become disconnected somehow, then they ECM will not have a pulse reference from the distributor in order to fire the injectors.
A bad injector can sound exactly like a rod knock. One that completly fails and squirts all it's fuel all at once will scare the daylights out of you it's so loud. You'll think it's going to crack the block!
While fuel injector problems usually give warning, driving your vehicle for a long time with a clogged or faulty fuel injector can cause problems. Increased fuel consumption. A noticeable increase in tailpipe smoke and emissions. Rough idle and hesitation during acceleration.
Left unchecked, faulty fuel injectors can damage an engine enough to keep the car from running, but there's usually time to intercept and fix the problem. Faulty fuel injectors on late-model cars will make their presence known by causing a cylinder to misfire.
Know what price you should pay to get your vehicle fixed.
The average cost for a fuel injector replacement (diesel) is between $240 and $491. Labor costs are estimated between $88 and $111 while parts are priced between $152 and $380.Replacing one does not save effort.
Any diesel vehicle professional will not be inconvenienced by having to install a set of injectors. If you are installing them at home, it may feel like more effort at first. But the more you do it, you will prefer to quickly install new injectors together.
