ok i have another question. but after reading in another post i found out that my cdr needs to be cleaned. one where is it. and second of all how would i do that

 

If you're non turbo its behind your air intake. If you are turbo its on the driver side valve cover.

 

if your N/A its under the air cleaner on the back side of the motor near the glow plug relay. looks like a tuna can... there is a bolt holding it down. take it off and soak it in gasoline or mineral spirits/parts cleaner.

 

thanks so much guys!!!!!! i will do that when i get home tonight so is it right by the glow plug relay or what if yall had a pic of it it would help me out tremendously.

 

Here ya go! Might have to blow some dust off of it, as it been a while since i've used this pic.

 

someone said gasoline eats away the diaphragm? is that true?

 

Gasoline is what you use to clean the thing! That's what i've been using to clean mine for a number of years....



What eats the diaphragm is people shooting compressed air in it. You HAVE to let it air dry.

 

thats what i thought too...but this says not too? ive been using gas for a while and have no apparent issues, school me on the cdr valve - Oilburners.net

 

I've learn you can use any "solvent" to clean a CDR.

Gas is a solvent, and that's what everyone I know uses.

 

i agree, couldnt compressed air cause the hole? or even just really high miles?

 

Compressed air will damage the diaphragm.


My 7.3 has 377k on the original CDR. Before being a member here, I had no idea about the CDR, and only started cleaning it a few years ago. I checked it's operation, and all was good.

 

could you remind us on correct testing procedure?? i have 3 of them and i just rotate them out every oil change after sitting in gas and air drying for a while...i guess i dont really need it anymore with my RDT into the exhaust...but seemed to help compared to not running it..

 

Take it out, theres a little vent hole on the bigger face part, put your mouth on that little vent hole, and stick your finger in the hole on the other side (where it connects to the back of the intake) and blow in the vent hole. Your finger should feel the diaphragm inside move. If nothing moves, your CDR is bad.

 

thanks

 

how long do i soak the cdr valve in gasoline is there any certian time limit??? thanks so much for the help on the truck guys it realy helps me alot