1. What are the common symptoms of a failing fuel pump on the Detroit 11.1L engine?
A failing fuel pump usually causes engine starting problems, poor engine performance, fuel leaks from the pump, engine stalling, and fuel starvation.
2. How to diagnose a failing fuel pump on the Detroit 11.1L?
These are a few ways to do that. You need to conduct a fuel pressure test to measure the fuel pressure. However, you should know that the speed of the engine determines the fuel pressure.
3. Where can I buy an injector timing tool for the Detroit 11.1L?
The injector timing tool is available at ProDieselParts. Purchase it here.
4. What happens if the injector’s timing is incorrect?
With incorrect injector settings, these are the signs you will notice;
a. Smoking from the exhaust
b. Loss of power
c. Increase in fuel consumption
d. Failed start
e. Hard starting
5. Can I replace only one injector, or should I replace all the injectors?
Yes, you can replace only one faulty injector, but for consistent delivery and performance, you should replace all the injectors at once.
Replacing only one injector also makes it difficult to track the injector’s record.
6. How to install injectors for Detroit 11.1L?
Follow the following steps to install the injectors;
a. Remove the valve cover
b. Install the new injectors with the oil ring installed on each of the injectors.
c. Torque the injectors with the torque specs
d. Use the injector timing tool to adjust the injector’s timing
e. Adjust the rocker arm accordingly.
7. How often should the rear oil seal be replaced on the 11.1L engine?
Due to the location of the rear oil seal, it should be replaced whenever you carry out an engine rebuild.
You should also replace it when you notice symptoms of rear oil seal damage.
8. How to replace the rear oil seal of the 11.1L engine?
Follow the steps below to replace the oil seal depending on the application:
a. Remove the transmission to have access to the oil seal.
b. Remove the flywheel
c. Remove the old oil seal
d. Install the new oil seal
e. Install all the components back and ensure that they are all torque.
9. What are the signs of a bad oil cooler?
Seeing these signs, you should know the oil cooler is bad; when the oil color turns milky, it’s because it’s contaminated. Loss of oil pressure, oil leakages from the oil cooler, and oil starvation on the engine are also signs of a bad oil cooler on your Detroit 11.1L Engine.
10. What causes wear on the oil cooler?
These are the causes of oil cooler wear;
a. Tear and wear on the oil cooler
b. Clogging from the dirt in the oil due to a failing oil strainer.
c. Oil contamination
d. Corrosion