Common questions

Why does my diesel engine smoke at start up?

Why does my diesel engine smoke at start up?

Worn valve stem seals. This is more of a problem with older, non-turbocharged engines. Regardless of engine type, worn valve stem seals tend to cause smoke at start-up and at idle. Constant blue smoke on a turbocharged diesel is unlikely to be caused by worn valve stem seals. Instead, the problem is more likely to be:

Can a car stall if there is no DTC?

If your car’s computer hasn’t thrown any DTCs, you may want to check the following potential components or systems to find the fault. An engine can stall under different conditions, depending on the specific fault. For example, the engine may stall during acceleration, while idling, after reaching operating temperature, or stall intermittently.

What does black smoke mean in a diesel engine?

You can make a rough-and-ready diagnosis of many diesel problems by simply ‘reading’ the exhaust smoke (this is generalised advice for all types of diesel engines). Black smoke means there’s too much diesel and not enough oxygen, so the carbon in the fuel doesn’t have enough oxygen to combine with.

What are symptoms of bad injector pump on 5.9 Cummins?

Some symptoms of 5.9 Cummins injector pump problems include lack of power, not starting, or hard starting. Bad injectors can also cause a knock in the engine. There are two fuel pumps on the 5.9 Cummins. One is a lift pump that lifts fuel from the fuel tank.

What happens when the injection pump goes below 5 psi?

When you start going below 5 PSI, you are not supplying the injection pump with enough fuel to properly drive the injectors, and at the very least, you will experience a loss of power and fuel economy. Some customers will notice the truck “falling on its face” or flat lining with power as the pump simply cannot supply any more fuel.

Can a low oil level cause a car not to start?

Low or dirty oil can cause intermittent low power, miss, rough run, no start etc. Make sure the oil level is correct and the oil is in good condition (less than 3000 miles) before trying to cure any other drivability or starting issues. DIAGNOSTIC CODES

How to contact a diesel fuel injection pump specialist?

To get in touch with one of our diesel fuel injection pump specialists, please call us at (888) 907-7225, or check out our contact page for more information. No Comments Yet.

If your car’s computer hasn’t thrown any DTCs, you may want to check the following potential components or systems to find the fault. An engine can stall under different conditions, depending on the specific fault. For example, the engine may stall during acceleration, while idling, after reaching operating temperature, or stall intermittently.

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Ruth Doyle