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Mystery Solved!!!
Yea…… College Man was right. When I conveted to r134 I put the large nipple on the large line. The large nipple is for the high side the large tube is the low side.
I have been trying to charge the high side. swaped them out and it took a charge right away.
Thanks for all the help.
SteveWow!
Thanks for all the input.
When I blew the tubes out; the comp. , the exp. valve , the dryer were all off.
I watched the other end as the old refridgerent came out., I saw no contamints or noticed any blockage. ( I was looking for it).
installed new exp. valve , comp., and dryer. Turned comp. by hand 7 times.
Comp. came with oil in it (mistake ? )?I pulled a vacum with a vacum pump, and let it run for about an hour.
I used a cheap vacum pump that you hook up to your air comp. from Harbor Frieght.,
So I don’t really know how much vacume I pulled (Mistake? )?Converted to r134 used R134 gauges.
You cannot hook the comp. up backwords. Low side ,small tube? High side, large tube.? charged low side small tube.
It took about 3/4 of a 12 oz. can of R134.
low side shoots up to 90 psi, comp. starts and it drops to about 70 psi. High side, (large tube) drops to 0 shut comp. off and they equilize .
I reduced the pressure to about 35 psi on the low side and let the comp. run for 10 min. then checked the tubes coming off the comp. to see if they were cool ,they were not.I am not sure of the total wieght of coolant my system takes, I was going by pressure. I will find out.
Thanks for your help.Thanks again
under the hood it says 3 + lbs that is around 55 oz. no where near 8 oz that it takes now.
I add my charge thru the small tube I assumed that was the low side. that is how my gages are set up.
I did not check how much oil was in the comp. when I got it , I took the caps off and turned it by hand and oil emediatly started coming out so i assumed that it had the right amount of oil in it. What would happen if it had way to much oil in the comp.?steve