Porter-Cable JOB BOSS C3150

Questions and Answers

H
Heidi GreenAug 16, 2025
Why is my Porter-Cable JOB BOSS C3150 Air Compressor not supplying enough air to operate accessories?
- S
  sheena13Aug 16, 2025
  If your Porter-Cable Air Compressor isn't supplying enough air, start by decreasing air usage and ensuring the compressor meets the accessory's air requirements. If the air requirement is too high, you may need a larger compressor. Check and replace any damaged hoses. Remove and clean or replace a restricted check valve. Tighten any loose fittings to prevent air leaks, and clean or replace a restricted air intake filter. Never operate the compressor without the air filter. Refer to the “Air Filter” paragraph in the “Maintenance “ section.
T
Tonya SawyerAug 19, 2025
How to fix air leaks at fittings on a Porter-Cable JOB BOSS C3150?
- P
  perezaliciaAug 19, 2025
  If you notice air leaks at the fittings of your Porter-Cable Air Compressor, it's likely that the tube fittings aren't tight enough. Carefully tighten the fittings where you hear air escaping, and use a soapy water solution to help identify leaks. Be cautious not to overtighten the fittings.
K
kingnicholasAug 26, 2025
Why does my Porter-Cable JOB BOSS C3150 Air Compressor regulator knob have a continuous air leak?
- R
  Ruth LopezAug 26, 2025
  If you have a continuous air leak at the regulator knob of your Porter-Cable Air Compressor, it indicates a damaged regulator that needs replacement.
J
jacksonericAug 28, 2025
What to do if the regulator will not shut off air outlet on my Porter-Cable JOB BOSS C3150?
- A
  Austin MaxwellAug 28, 2025
  If the regulator on your Porter-Cable Air Compressor will not shut off the air outlet, it means the regulator is damaged and needs to be replaced.
U
uturnerAug 31, 2025
What to do for air leaks at the check valve of Porter-Cable JOB BOSS C3150?
- C
  Christina LongAug 31, 2025
  If you are experiencing air leaks at or inside the check valve of your Porter-Cable Air Compressor, it is likely that the check valve seat is damaged. A defective check valve results in a constant air leak at the pressure release valve when there is pressure in the tank and the compressor is shut off. Replace the check valve. Refer to the “To Replace or Clean Check Valve” in the “Service and Adjustment” section.
R
Rebecca ShermanSep 3, 2025
Why does the safety valve pop off on my Porter-Cable Air Compressor?
- T
  Tracie ScottSep 4, 2025
  If the safety valve on your Porter-Cable Air Compressor is popping off due to excessive tank pressure, it could be that the pressure switch isn't shutting off the motor when the compressor reaches the 'cut-out' pressure or the pressure switch 'cut-out' is too high. Move the On/Auto/Off lever to the “OFF” position; if the outfit does not shut off, contact a Trained Service Technician.
R
rachel33Sep 6, 2025
Why is my Porter-Cable JOB BOSS C3150 making a knocking noise?
- K
  katherinechambersSep 6, 2025
  A knocking noise in your Porter-Cable Air Compressor may indicate a possible defect in the safety valve or a defective check valve. Try manually operating the safety valve by pulling on the ring. If the valve continues to leak, it should be replaced. Additionally, remove and clean, or replace the check valve.
M
michael05Sep 9, 2025
Why does the pressure drop on my Porter-Cable Air Compressor when using an accessory?
- R
  Rita SchroederSep 9, 2025
  If the pressure reading on the regulated pressure gauge of your Porter-Cable Air Compressor drops when an accessory is used, some pressure drop is normal. However, if the pressure drop is excessive, adjust the regulator following the instructions in the “Description of Operation” paragraph in the “Operation Section. NOTE: Adjust the regulated pressure under flow conditions (while accessory is being used).
X
xparkerSep 12, 2025
What causes air leaks in the air tank of my Porter-Cable JOB BOSS C3150 Air Compressor?
- J
  John ParksSep 12, 2025
  If you notice air leaks in the air tank or at the air tank welds of your Porter-Cable Air Compressor, the air tank is defective and must be replaced. Do not attempt to repair the leak or modify the tank, as this can weaken it and create a risk of rupture or explosion.
A
Alexander MoralesNov 21, 2025
What to do if my Porter-Cable JOB BOSS C3150 motor will not run?
- D
  Douglas ReedNov 21, 2025
  If your Porter-Cable Air Compressor motor won't run, several issues could be the cause. First, the motor overload protection switch might have tripped; allow the motor to cool off so the switch can automatically reset. Also, ensure the tank pressure isn't exceeding the pressure switch 'cut-in' pressure, as the motor will start automatically when the pressure drops below this point. Check that the extension cord has the correct length and gauge. Remove and clean, or replace a stuck open check valve. Inspect for loose electrical connections inside the pressure switch and terminal box area. Bleed the line by pushing the lever on the pressure switch to the “off” position; if the valve does not open, replace switch. Check the fuse box for a blown fuse and replace it as necessary, or reset the c...