6.5hp 80gallon cfm psi? - Coleman 6.5hp - 80 Gallon Vertical ASME Oil - Lube Air Compressor CV6548049

Ball park rule of thumb,
Fan Energy 1000-1500 CFM/hp

if it is a 11cfm compressor then it produces 11.8 cfm of air regardless of the pressure
pressure has nothing to do with cfm but with the restriction to air flow
for example the tire inflator -air hawk- has a very small cfm but as the tire restrict the air flow the pressure builds up to set pressure on the gauge
so if you want 100psi from the 11.8cfm unit just adjust the pressure switch to shut off at 100psi
Cfm is only important when using air tools as a compressor that is not capable of maintaining the cfm thereby the pressure to run the tools is not a good idea
as an example
a sand blaster that uses 11.8 cfm at 100 psi will not work on your compressor
that unit will require a 20cfm compressor to run it peoperly

A screw type compressor will be the better solution. Screw compressors are made to run. You can also get screw compressors with variable speed with means electrical savings. Ingersoll has screws that are up to 150 psi. Atlas Copco has screws that I know go up to 175 psi. I don't know if it's still available but the Government had assistance plans or grants if purchasing a compressor with a power savings feature.

Won't be worth the shipping
That is a good machine

My 12 gallon lasted 30 years
Now I have a 28 gallon like yours

Get a gasket set for the cyl head, etc
from campbell.
Call them,they may give you whatever
is bad ,if it is new

Hi exotic, my name is John. Welcome to FixYa. You can get it here. www.mastertoolrepair.com . Thanks for choosing FixYa....John

Hi, my name is John. Welcome to FixYa. You can get it here www.mastertoolrepair.com .Thanks for choosing FixYa..John

The following address will provide you with all the info that you need to maintain your compressor. Good luck

http://www.chpower.com/webapp/wcs/stores/servlet/XItemDocuments?storeId=10051&langId=-1&catalogId=10001&findModel=HL7002

did you over fill it? How old is the compressor?

Here are the specs on your compressor:
Electric Single Stage Air Compressor, Motor Running Power 5.0 HP, Free Air Flow @ Maximum Pressure 16.1 CFM, Free Air Flow @ 90 psi 18.0 CFM, Maximum Pressure 135 PSI, Phase Single, Voltage Rating 230 Volts, Current Rating 21.5 Amps, Tank Capacity 60 Gallons, Tank Type Vertical, Height 71 Inches, Length 20 Inches, Width 30 Inches, NPT Outlet (F) 1/2 Inch, 60 Hz
Good luck with your new comressor.