hellllllppppp thought i fixed it ....

[jmc]

ok 2001 178,000 stock everything new injectors new fuel filter housing new rubber hoses no air in fuel filter truck starts well almost always then once in a while , well now once a week it wont start at all i pump the primer crank then need to pump from lack of pressure it seems but wont start. is it fpr or cp3? is cp3=fuel pump please help... oh i also notices a slight pulse in the idle. after i did the injectors in went away but is back ever so slightly very minute compared to what it was

[duramax07tmd]

You might have a small leak in the fuel filter housing but you said it was new, so this does not help you. Someone will chime In.

[jmc]

the cp3 or fpr is what i am thinking would the cp3 cause lack of pressure with no air in fuel filter

[jmc]

one other thought when i did my injectors the high pressure lines had a little corosion and my ses registerd a small fuel leak for 2 days when i would stomp on it do you think that maybe the fuel is leaking out before the injector but not regeistering now?

[bigdaddydiesel]

I think that sounds like you have fuel leaking back through the fuel return lines off the CP3. I COULD be wrong, but I had another friend who chased a similar issue for months until they found an irregular weeping happening right at the fuel return line...

Hope that helps a little...