When you say "yes the bottom one is tight", do you mean it hit the stops, or that it is just good and snug? It needs to hit the stops.

 

tight as in it stoped where it is suposed to.. IDK why the top one is making noise, but could air be in the system somewhere?

 

Air is typically the culprit, but it seems - more times than not - to be getting in as a result of not hitting the stops on the DFCM filter. Even when tight, people have had issues before with air getting in if the stops weren't fully met. You mentioned you checked the o-ring on the drain valve. Did you lube the housing o-ring before installing and verify no defects and proper seating? Mine only made noise during the priming process and for about 30 seconds after my first start, but has been silent since. Hope you find a fix quickly and easily!

 

I took everything all off and basicly started over and it made noise for about 5 more min then it quit, thanks for the help

 

My truck makes a sound like the LPFP is dying every time I start it. We hooked the IDS to it, started playing with everything, manually turn the LPFP on and off. The noise would go off. When he(SMT) called the hotline, the techs told him that the pump is purging "air" out of the system.