How to Solve Excessive Black or Grey Smoke for Detroit EPA07 GHG14 Engine

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This instruction show you guide on how to solve excessive black or grey smoke for Detroit EPA07 GHG14 engine .

Preparations:

2024 Detroit Diesel Diagnostic Link DDDL 8.19 8.09 Free Download

JPRO DLA+ 2.0 Adapter

NEXIQ USB Link 2 Adapter

 

Procedures:

To check for excessive black or grey smoke perform the following:

 

1 Verify proper ultra-low sulfur diesel fuel is being used. Is the correct fuel being used?

1a Yes; Go to step 3.

1b No; Go to step 2.

 

2 Run engine from a known good fuel source. Go to step 3.

 

3Start and run the engine.

 

4Run the engine at idle with no-load for approximately five minutes, allowing the engine coolant to reach normal operating range.

 

5 Visually inspect exhaust pipe for excessive black or grey smoke.

5a If the engine exhaust smoke emission appears normal, no further troubleshooting is required. Shut down the engine.

5b If the engine exhaust smoke is excessively black or gray, shut down the engine. Go to step 6.

 

6 Check the air cleaner for restriction.

6a If the air cleaner is restricted, remove the air filter element from the air cleaner container; refer to OEM guidelines.

6b If the air cleaner is not restricted. Go to step 7.

 

7 Attach the air-to-air cooler test kit (J-41473); refer to OEM guidelines.

8Disconnect the air inlet hose from the outlet side of the turbocharger compressor housing.

9Attach the air-to-air cooler test kit adaptor plug to fit into the hose at the compressor connector. Refer to OEM guidelines.

 

10 Attach an air pressure hose to the air chuck at the regulator and gradually pressurize the air inlet system to a pressure of 177 kPa (25 psi).

 

11 Apply a water and soap solution to each hose connection, across the face of the charge air cooler.

 

12 Apply a water and soap solution to the air intake manifold and cylinder head mating surface area.

 

13 Visually inspect all joints for air leaks and all charge air cooler welded surfaces for stress cracks.

13a If air leaks are present around the joints, replace the charge air cooler. Refer to OEM guidelines.

13b If air leaks are present around the air intake manifold. Repair as necessary.

13c If NO air leaks are present Go to step 14.

 

14Remove the Exhaust Gas Recirculation (EGR) hot pipe. Refer to section

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