<VV> Mechanical oil pressure gage failure

[Dennis & Debbie Pleau]

To fix the slow reading problem, fill the entire length of line with 
oil.  The problem with it stopping working sounds like it is pinched 
somewhere.  If it is plugged remove both the ends and blow it out with 
compressed air.  I suggest blowing from the dash side and catching it in 
the engine compartment.

Dennis

At 11:13 AM 6/27/2005, Ewell Mills wrote:
>I have two cars that I have added mechanical oil pressure gages to and 
>both have failed.  Since I had trouble on one car with the plastic 1/8" 
>tubing breaking, I redid both cars using a one piece 1/8"/8" copper line 
>that I was able to buy in 25' rolls.  I am now having trouble with both 
>cars failing.  One started out by being really slow to come up to the 
>correct pressure before completely failing.  The other car just failed 
>suddenly. (By failure, I mean a reading of zero).  It appears that the 
>1/8" copper tubing is stopping up, since temporally adding both another 
>gage, and the one up front with a short piece of tubing at the place I 
>connect them (under the O.P. sending unit),  they work just fine.  The oil 
>pressure pops up to what it is supposed to be immediately. The copper 
>tubing seems to be about the same size internally as the plastic, and the 
>outside of both definitely is.  I am thinking of using 1/4" tubing with 
>reducers (since the Flaps that I use does not stock 3/16")  to replace it, 
>but this seems to be extreme overkill.  Has anyone had this problem with 
>Corvairs or otherwise.  Any ideas appreciated, on or off line.
>
>Cecil Mills
>Cocoa, Fl.