Dash gauge calibration?
Looking for suggestions... My dash gauges are somewhat, not all, functional.. I think.. Temp gauge seems to be close I think, oil pressure looks to be OK, I think.. Fuel gauge only shows 1/2 full when filled. RPM gauge sticks and does not move much at all. It appears to be stuck somewhat. When I tap on the gauge window it does move a bit. BTW whats the manual RPM dial for? Speedometer is close but not accurate.. I notice the inside of the gauge panel has quite a bit of dustiness I assume from years of firewall insulation degradation.. The insulation is nearly all absent. Is there anyone who has had this situation and what was done to fix them all? Pull the dash clean it up and calibrate each gauge? She's a 1965 GTO all original and I aim to keep it that way.. As you might assume, nowhere to go to find any experienced mechanics with any working knowledge for this. Any suggestions are much appreciated