ARRGGGH! Another Compressor won't engage post! - PeachParts Mercedes-Benz Forum

Whiskeydan · #10 07-24-2008, 10:51 AM

Quote:

Originally Posted by vstech

if your gauges are accurate, then 26inHg is showing you have a leak... in 1 hour you should be pegging the 29inHg mark on your gauges.
best way to check is with a micron gauge, but they are not easily attainable...

and it is simple to put in 3Lbs with no compressor engagement, you put in liquid in the high pressure hose... done.

Tell me how it remains liquid in the "evacuated" system??? I say it is NOT possible to put 3lbs in without condensing. If the OP has reads 75psi on both lines, the last 'empty' can had to have 75lbs psi when disconnected.

I'd suggest jumping the compressor clutch to +12 volts and see what your pressures do. If the low side goes into a vacuum add more. It could be the low side switch needs to be 'tickled' into action. Seen it before...