Is there a way to calibrate my factory oil pressure gauge?
 

I decided to go from dummy lights to gauges and bought used gauges at a swap meet. I know the engine makes good oil pressure as I had aftermarket gauges up until now but the factory oil gauge does not read correctly. I put a regulator on my air line and at 60psi it BARELY moves the gauge, unregulated at 90psi it only goes up to about 1/4 of the scale. When the truck is at idle it makes about 25psi and it doesn't even register on the gauge. Is there a way to adjust the gauge?

Thanks

Re: Is there a way to calibrate my factory oil pressure gauge?
 

It has probably been dropped and the gears inside have jumped a couple of teeth. If you can take it apart, you may be able to shift the gear teeth. It's trial and error and you have to be careful to not damage the coiled clock spring that is attached to the needle.

Re: Is there a way to calibrate my factory oil pressure gauge?
 

A big flipping hammer , I probably have a used one I can send you . :chevy:

Re: Is there a way to calibrate my factory oil pressure gauge?
 

Can't really calibrate one, but you can verify it is reading correctly using air pressure. Of Course you'll need another gauge to read the pressure and compare.