How do you replace a high pressure fuel tube?
11- You also need to replace the high pressure fuel tube. 14- Push the HPFP in its place while aligning it with the camshaft drive. 17- Plug the scanner and read the common rail pressure. Inspect your vehicle for leaks and keep checking the scanner for a few minutes to make sure the pressure does not drop i.e. there are no leaks.
How do you replace a HPFP fuel pump?
9- Clean well the HPFP drive at camshaft end. 12- Connect the new high pressure fuel pipe to the common rail without tightening it. 15- Connect and tighten the high pressure tube and reconnect the low pressure tube and the electrical connector. Reinstall the battery but not the air hoses. 18- Now reassemble everything.
How to replace 5.3L high pressure fuel pump?
In this video we show the step by step process for changing the high pressure fuel pump on Cliff’s 2014 Silverado with the 5.3L EcoTec V8. This issue is related to fault codes Powertrain P0172 and Powertrain P0175. The exact issue is fuel being blown past the HP fuel pumps seals and into the crank case which contaminates the motor oil.
What happens when a high pressure fuel pump fails?
If left uncorrected, this can damage internal components as the oil will break down due to the fuel and lose its lubricating ability. A quick indicator that the fuel pump is likely at fault is a smell of fuel when removing the oil dipstick. The high pressure fuel pump failure was verified by a local dealer by monitoring the fuel trim levels.
11- You also need to replace the high pressure fuel tube. 14- Push the HPFP in its place while aligning it with the camshaft drive. 17- Plug the scanner and read the common rail pressure. Inspect your vehicle for leaks and keep checking the scanner for a few minutes to make sure the pressure does not drop i.e. there are no leaks.
9- Clean well the HPFP drive at camshaft end. 12- Connect the new high pressure fuel pipe to the common rail without tightening it. 15- Connect and tighten the high pressure tube and reconnect the low pressure tube and the electrical connector. Reinstall the battery but not the air hoses. 18- Now reassemble everything.
In this video we show the step by step process for changing the high pressure fuel pump on Cliff’s 2014 Silverado with the 5.3L EcoTec V8. This issue is related to fault codes Powertrain P0172 and Powertrain P0175. The exact issue is fuel being blown past the HP fuel pumps seals and into the crank case which contaminates the motor oil.
How do you take pressure off fuel rail?
Place a small drip pan under the rail and place a towel over the port. Using a small flat screwdriver, open the valve by pushing on the schrader valve. This will bleed off the pressure in the fuel rail. Note: If you do have a test port or a schrader valve, then you will need to remove the supply fuel hose to the fuel rail.