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97 chevy: diesel..started blowing..white smoke and loss of horsepower

Resolved Question:

i have a 97 chevy with a 6.5 diesel it started blowing black smoke and then changed to white smoke and loss of horsepower
Submitted: 6 years ago.
Category: Chevy
Expert:  Chevy expert replied 6 years ago.

this may be a faulty injector pump

Tests/Procedures:1. Test the ignition feed to the fuel solenoid driver module, or check the same ignition circuit at the Engine Shut Off (ESO) solenoid on top of the injection pump.

2. The ignition feed is a Pink wire and should remain above 12v with engine running and when the engine stalls.

3. If the voltage drops below 10v at the time of the engine stall, replace the ignition switch.

4. If the voltage is OK, go through checks as described in TSB #77-63-06A.

5. If these checks show OK, replace the fuel solenoid driver module on the side of the injection pump.

6. Be sure to transfer the resistor from the old module to the new module as shown in the TSB.
Potential Causes:Fuel Solenoid Driver Module
Ignition Switch
Injection Pump

Customer: replied 6 years ago.
what is tsb #77-63-06a
Expert:  Chevy expert replied 6 years ago.
here it is tsb
Customer: replied 6 years ago.

i forgot to tell you that it also has a miss coming from exhaust


Expert:  Chevy expert replied 6 years ago.
yes these are well known for bad injectors , pumps and solonoid drivers , the misfire is common
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