When to change the fuel filter on a Duramax?
Dirty fuel filter is the most common issue we see when fuel rail pressure is low. The filter should be changed in the 8,000-10,000 mile range if good fuel is being purchased and running mostly low HP tuning, much sooner if running competition/race style tuning.
Why is my Duramax fuel rail pressure so low?
This is a very common problem that we hear about from our Duramax customers. Actual fuel rail pressure is not keeping up with desired fuel rail pressure. This may only happen in high fuel demand situations like towing or racing but it can also happen with everyday use.
Where is the CP3 on a Duramax engine?
This CP3 is under high demand, sucking fuel from the tank through the filter and then converting this to pressures up to 26,000 psi.It is a mechanical pump and does wear with use. This is a big job to do as the CP3 is gear driven off of the camshaft and is located in the valley of the engine.
When to change fuel filter when fuel pressure is low?
Dirty fuel filter is the most common issue we see when fuel rail pressure is low. The filter should be changed in the 8,000-10,000 mile range if good fuel is being purchased and running mostly low HP tuning, much sooner if running competition/race style tuning. When in doubt, change the filter!
Which is the best fuel regulator for Duramax?
Then check the FOLCONROAD Duramax Fuel Pressure Regulator . It comes with everything and much more than you need on a pressure regulator – for an excellent price. In this guide, we will go through the most common fuel pressure regulator symptoms the Duramax engine will experience.
How to clean a GMC Duramax fuel pump?
Clean the fuel pressure regulator and high pressure injection pump thoroughly with solvent, such as GM P/N 12377981 (Canadian P/N 10953463), or equivalent. 23. Using compressed air, thoroughly blow dry the regulator and pump. 24. Remove the 3 fuel pressure regulator screws (1) using a T25 TORX®. Click here for detailed picture of above image. 25.
What’s the RPM on a 2005 GMC Duramax?
Check out the thread “2005 6.6 max rpm 2000”, there are some suggestions there. Also search for the “ice pick trick” as it is one of the suggestions that often comes up for this problem.
When did GMC Duramax lose power under load?
In 2012 there was a P1093 code and the dealer invoice states “…low rail pressure during enrichment. Command high fuel rail pressure, pressure drops. Follow diagnostic chart, test system pressure, relief valve failed” so they replaced the FPRV.