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Also the head over flow valve needs to open up some when at high Idle ( almost full rpm ) and that would cause the restriction. Know you said you checked it but any problem with restriction starts with the over flow valve.

Yea we talked about a restriction in the over flow valve or somewhere in the return line going back to the tank. Still believe removing the return line off tank and watch it with in tank running and then with truck running. I know you said you did all the fuel feed and return in Synflex. Is...

Yea they will run / idle with pressure so low your gage will not pick it up.

Yea that one sounds like a governor fart. Just to add if anyone cares it was in a article I was reading some time ago. Something about a check valve in the air dryer under the in coming compressor line or it could even be under the fitting of out going line depending on make of dryer. You have...

Give me a call when you can. Also with the valve out turn on in tank and see if any crud comes out. Try and place a rag / towel so as to catch and see if there is crud.

Yea the real pain was more mental. I jacked it up, changed the tire with my spare let it down put tools away. Put soapy water on the wheel / tire in question. Felt real tired and stupid as it is hot here and it was only the valve stem core. If I could have kicked myself I would have and no body...

Glad to confused you oops I mean to help you. Also I see nothing wrong with the type of your air drier they just need serviced after so long. You might get a kit and service yours if it is not in bad shape inside like badly corroded. Been awhile but a member had some nice NOS air dries for sale...

One thing I did when putting on the ring nuts I used two non distorted nuts across from each either. Tighten them down tight and slow and try to keep ring equal. Then start to install the distorted nuts and tighten each on down. When you have all distorted nuts torqued replace the two non...

Not a problem as I was thinking one thing and posting another. Also corrected some of my post's so anyone reading this thread is not as confused as me at this point.

Do not forget to report back with the fix and what it really was. Tanks

:cool:

Here to it is pop off not PPV term. Guess I started it and should have corrected him right away. My bad. A leak would not cause to pop off every 6 seconds. Sometimes the lower unit on the air dryer gums up and will not close right. Sometimes you can take something small and round and blunt push...

Agreed and the PPV does not pop off with air it just does not open main problem. I after reading post and he said it pops off air should have corrected usage of PPV and not used PPV term like he did. Air dryer pops off and pressure relief pops off.

Getting old CRS but is not the air dryer around there too. OK if our governor was allowing 150 then the pop off valve might just be popping off. Truck air if I remember 120 psi. If it is pop off and you have 120 then maybe service the over pressure valve . Truck looks good and a good gust of...

Just wondering have you looked to see / feel where the air is popping from? If it is an over pressure of 150 then you would back down on the governor to 120. Just spit balling could it be the air dryer lower unit popping off and needs to be serviced? As for the pop off valve some can be taken...

My .02 again and how bout three choices I see. One new steel line correct line up ends parallel and no gap between engine and steel line after governor line tight. Two same as the first but with some kind of bracket rubber mounted. Three flex line of your choice. My steel line was rusted pretty...

I will trade you all the footman loops I have for that Ferret. You can figure out the excuse to your friend that owns it. Also please fix anything that might be wrong with it first. Thanks so much and I will leave this Monday with the trailer to carry the Ferret. What a friend you are!

Found this interesting read. Just thought I would add. Maybe not only do we need to check for engine to steel line ends be parallel but after the governor line is tight the engine and steel lines should be touching or have no gap between them. Microsoft Word - ACTA-2014-3-21.doc (upt.ro)

Well I should have never said no way to test because there is if you want to measure the vibration / frequency at all rpm of the engine. Might even need to check running down the road if that might change things. Also the bracket to engine needs to be rubber mounted so a not to transmit any...

Now if you think vibrations are a cause we could try this. Take a piece of rubber hose the length of the straight part of the steel line. Slice it down the middle and rap it around the line. Use two hose clamps at both ends and tighten them up. Only problem is how will we test to see if our mods...