Help! Multiple air leaks. pic included

Looks like plastic in the pic.

 

I think trimming the airline to get a new sealing surface on the hose is a good idea, doesn't cost anything, might make a difference. Those quick connect fittings can get old and need replacement. Maybe try tugging on the suspect airline and see if it reseals? (very low probability) Best

 

I replaced foot valve and it was still leaking..they said the traction control valve is bad too..ok so I replaced traction control valve too,now there is another leak on on valve located on left rear side of engine block and another leak on frame rail on left side of truck..any ideas please

 

There's not much you can do but to replace the fittings or valves that are leaking.

Usually when you fix one air leak it will intensify another leak further down the line as the air pressure increases at the weaker fittings or valves after the repaired part.

 

Sometimes just taking the line out of that manifold and reinserting it will help. Sometimes trimming it (be sure you have enough slack), like others have said will help. But I had a crack in the manifold on the firewall itself and had to replace it. So soapy water is the way to find out where and why it is leaking.

 

WOW My 84-359 Pete will still have air after 10 days and will take a couple months for the suspension to go down. Its retired now.