PCV clatter

[diesel4me]

Ok, new PCV fixed the rattle.... I sprayed carb cleaner around intake and carb and no increase in idle..

still not sure why on cold start my fuel psi is 8 then mellows to 5-7 once warmed up..mechanical fuel pump and no regulator...

Glad the new PVC valve fixed it...saved you lots of diagnosis & work..
A mechanical fuel pump might put out a bit more pressure when cold,the diaphragm is stiffer when cold and likely gets more flexible once it warms up...gas may "thicken" when cold too,as noted...
I know diesel gets thicker once temps dip below freezing..it'll turn to wax if it gets cold enough!..

 

[centexk5]

My diesel would run 15psi normal but when cold it would run up to 30-40psi for the first half hour or so until it warmed up.