Why does my diesel lose prime?
The fuel system loses pressure with the truck off. Unless you have a cracked filter cap or bad line, the fuel system to the upper filter will purge when the truck gets turned on, and the fuel pump runs. You’d have a noticeable fuel leak. It’s probably a leak in your HPO system, or crack in your HPO reservoir.
How much fuel pressure should a C15 cat have?
For the CAT® 3406E, C13, C15, and C16 engine to perform at peak efficiency, the fuel rail pressure must be adequate to completely fill the fuel injectors during the “Up” stroke of the plunger. A minimum of 115 PSI to an absolute maximum of no more that 120 PSI at “High Idle” is required.
Is Caterpillar C15 a good engine?
The Caterpillar C15 engine is known to be a good and reliable engine. It’s a very popular engine for a reason, and they’re a consistent seller for us. The C15 was made to improve on the 3406E. One of the key improvements is that C15 engines see oil leakage less frequently than the 3406E.
How do you prime a 5.9 24v Cummins?
How to Prime a Cummins 5.9 Injector Pump
- Get into the driver’s seat of the vehicle.
- Turn the key to the “On” position and listen for the mechanical pump in the fuel tank to engage.
- Turn the key enough to engage the starter.
- Repeat Step 3 four to five times to allow the fuel line to pressurize.
How do you prime a 3406e?
I have had the best luck priming them by taking the fuel return line loose at the back of the head then using the hand primer pump until there is a full stream of fuel out of the fitting and the air bubbles stop. Then reconnect the line and continue to pump the hand primer until its hard to pump.
How much fuel pressure should a 3406e cat have?
Higher is better. Less chance of fuel getting aerated,which is hard on the injectors. Should be 78psi at an idle,and 90-95 at 2100rpm.
What is a Compucheck fitting?
Used to check fuel system restriction on diesel engines with Compucheck test ports. Fits Compucheck test ports on the fuel systems of Cummins, International, and Detroit Diesel engines as well as other diesel engines that have been outfitted with the Compucheck test ports. Six-foot hose allows for road testing.
How long will a C15 Acert last?
Inside The Caterpillar C15 In order to stay on top of new emissions technology, we looked toward an engine that is very clean, yet still can be expected to last 1,000,000 miles-the Caterpillar C15.
How do you prime a 2nd Gen Cummins?
Why is my cat C15 engine losing Prime?
Symptoms are almost identical to those you see when a fuel filter begins to plug up. Lately, it’s also been real bad about losing prime, so about one out of ten times I start it up, it loses prime and dies, then I have to use starting fluid to get it started again.
Why does my DD15 loose prime when shutdown?
The fuel system has been replaced with the injectors due to metal in the fuel system. It was performed by another shop. The customer said he spent $8000. Now the truck looses prime when shutdown. I have replaced the supply line from the tank to the pump. The truck still has the same problem. Looses prime and hard to start.
When do you lose prime on a carbureted engine?
Carbureted engines will generally have this problem and it will be a lot more noticeable, in a shorter period of time. Generally, if there is no issue, you can turn the engine off for a couple of hours and never lose prime. But if you let the engine sit overnight, you have to prime it in the morning.
When do I have to Prime my engine?
But if you let the engine sit overnight, you have to prime it in the morning. Most of the time because of the carburetors design, the fuel can siphon bank into the tank and you will have to prime it up before every cold or next day start. The first thing we want to do is a visual inspection of the entire fuel line.