I put a Firestone Industrial Ride-Rite Coil-Rite air helper spring kit into the Fit's rear coil springs, and it has a slow leak. It'll leak down from 20 PSI to 10 PSI in 24 hours. So far I've put more slack into the air lines so they go into the push-lock (?) connectors straight on, Teflon-taped the tee compression fitting to make sure that's air-tight, and tested with soapy water to see any leaks. I can't find any obvious leaks. What else should I be looking at?
As an aside, the Air-Lift 1000 air helper spring kit in my Buick's rear coils holds its pressure for months without leaking.
As an aside, the Air-Lift 1000 air helper spring kit in my Buick's rear coils holds its pressure for months without leaking.