Deutz Engine Troubleshooting

When the engine fails to work, we need to accurately determine the cause of the problem and repair it in time, here are some ways of Deutz engine troubleshooting.

1. Understand the details of the fault

Before proceeding to troubleshooting, it is necessary to carefully understand the details of the failure, such as the failure of the diesel engine before the working conditions - load conditions, altitude, ambient temperature, ambient dust conditions, vehicle driving road conditions, etc.. The nature of the fault - is it a gradual deterioration or sudden occurrence, or intermittent occurrence, whether it occurs after the fuel or oil change, etc.. Failure phenomenon - exhaust smoke color, coolant temperature and consumption, diesel engine noise conditions, etc.. Whether the coolant is contaminated, e.g. oil, iron embroidery, solidified sediments, etc. Whether the oil is contaminated, such as water, fuel, etc.. Then further analyze the Deutz engine failure according to these conditions.

2. Deutz engine troubleshooting

(1) Difficulty in starting the engine

Power system check: measure the battery voltage; clean the electrode connector, check whether the starter is running normally, listen to the “click” sound to determine the electromagnetic switch state;

Fuel system check: confirm that the fuel is sufficient and free of impurities, manually pump the fuel to check whether the fuel line is air intake; replace the clogged fuel filter, check the pressure of the fuel delivery pump.

Cold start assistance: test the resistance of the preheat plug in a low-temperature environment to ensure that the preheat controller works.

Mechanical check: use the pressure gauge to measure the cylinder compression pressure, too low need to check the piston ring or valve sealing.

(2) Engine overheating

Cooling system: replenish coolant to MAX line, pressurized test to find leaks; check the water pump belt tension, touch the temperature difference between the upper and lower parts of the radiator during operation.

Thermostat test: Remove the thermostat and immerse it in hot water, observe whether it opens gradually.

Load management: check transmission system resistance, such as brake stalling or bearing damage resulting in overload.

(3) Abnormal handling of smoke emission

Black smoke: Clean/replace the air filter, check if the EGR valve is stuck, and test the atomization of the injector (even spray angle without dripping).

Blue smoke: Measure the oil consumption, cylinder pressure test to determine whether the piston ring wear.

White smoke: Fuel water content test, check whether the cylinder gasket is flushed (coolant mixed into the oil).

(4) Sudden stop

Emergency treatment: immediately check the oil/coolant level, check whether the fuel cut-off valve is triggered by mistake.

Circuit check: read the fault code, focus on checking the crankshaft/camshaft sensor signal and ECU power supply.

(5) Abnormal noise diagnosis

Noise localization: use stethoscope to distinguish piston knocking cylinder (crisp metal sound), connecting rod bearing ringing; check valve clearance), adjust and test.

Timing system check: disassemble and check the timing gear wear, make sure the markings are aligned and the belt/chain tension meets the standard.

These are some ways of Deutz engine troubleshooting. Most common faults can be solved systematically by following these steps. If the problem persists, it is necessary to analyze it in depth with the data of the repair manual and professional tools.