|
Parts for Detroit Diesel ® engines,
Twin Disc ® Marine Transmissions,
Allison Marine, Engine Gauges
and Marine Gauges.
Parts for Detroit Diesel ® engines,
Twin Disc ® Marine Transmissions,
Allison Marine, Engine Gauges
and Marine Gauges.
|
Helpful Tips - Consejos Utiles
The chart below shows the most common questions asked by owners of Detroit Diesel® engines 3-71 natural 4 valves when trying to troubleshoot why their engines underperform. It categorizes areas of possible malfunction, likely cause and recommended action to bring your new, rebuilt or used Detroit Diesel® engine back to proper operation. The chart will give you confidence when speaking with your Detroit Diesel® engine mechanic or ordering parts. As a quick reference guide only, the chart must not be thought of as a substitute for the use of your Detroit Diesel® engine 3-71 natural 4 valveOwner's operating or service manual.
For your convinience in looking up parts and pricing, please click on the following link www.dieselpro.com/Parts-for-detroit-diesel-engine-3-71. You can also call us at 1-888-433-4735 or 305-545-5588. We also encourage you to do a Google search for Detroit Diesel® forum or Detroit Diesel forum 3-71 natural 4 valve where you may find information from other people that have had the same question you have about your diesel engine.
|
PROBLEM
|
POSSIBLE REASON
|
CHECK
|
| Engine will not start
|
Lack of air intake or restricted air intake
|
√
|
| Broken blower shaft
|
|
| Worn out blower shaft
|
|
| Defective fuel pump
|
|
| Defective starter
|
|
| Discharged battery
|
|
| High exhaust back pressure
|
|
| Black smoke coming out of engine
|
Defective injector
|
|
| Contaminated fuel
|
|
| Broken or worn cylinder parts
|
|
| Engine overloaded
|
|
| Faulty intercooler or aftercooler (for turbo engines only)
|
|
| White smoke coming out of engine
|
Broken piston ring
|
|
| Incorrectly installed ring set
|
|
| Defective injector
|
|
| Fuel quality or grade
|
|
| Long idle periods
|
|
| Broken or bent push rod
|
|
| Injector or governor improperly adjusted
|
|
| Low engine oil pressure
|
Water in engine oil pan
|
|
| Fuel in engine oil pan
|
|
| Defective oil cooler
|
|
| Engine overloaded
|
|
| Crankcase overfilled
|
|
| Low engine RPM
|
Improperly working injector
|
|
| Governor calibration
|
|
| Hi engine RPM
|
Governor calibration
|
|
| Engine overheating
|
Defective fresh water pump
|
|
| Defective raw water pump (marine engines only)
|
|
| Defective thermostat or thermostat seal
|
|
| Clogged radiator or heat exchanger (marine engine only)
|
|
| Grey smoke coming out of engine
|
Long idle periods
|
|
| Defective intercooler or aftercooler (for turbo engine only)
|
|
| Restricted air intake
|
|
| Defective injector
|
|
| Contaminated fuel
|
|
| Blower or turbocharger seals leaking
|
|
| Geartrain makes noises
|
Low oil level
|
|
| Engine driven accesories
|
|
| Damage main or rod bearing
|
|
|