Question about Porter Cable 4 5 Gallons 150PSI Job Boss Oil Lube Mobile Air Compressor ? C3551

2 Answers

Wont build pressure after rebuild

I have model 919.167243 15 gal 1.5 running hp. anyways i was sandblasting and i thinki ran it to long with out cool down and it started to make a higher picthed sound and would build pressure over 20-25 tops. i bought a head gasket kit and new rod kit which includes the the sleeve and ring and new rod with bearing. i put it back together and same thing no pressure build up any help or advice i checked the big vavle at the tank and the piston moves freely in and out. plz help

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 169 Answers

Check valve plate and gasket for anything broken, also when you installed the piston into the cylinder did you push it up from the bottom? if the sealing ring is installed with it folded down towards the crankshaft will allow air to blowby, it needs to be facing up to pump correctly.

Posted on Nov 26, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Champion:

    An expert who has answered 200 questions.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 204 Answers

If you assembled things correctly disconnect any hoses and check for air leaks and check the inlet and discharge valves are good

Posted on Feb 26, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Will not build up pressure


worn out pump on the compressor, or leak in tank.

Jul 05, 2010 | Craftsman 1 Hp, 4 Gal. Air Compressor

1 Answer

Pressure in the tank only builds to 30 psi


Bad check valve. But I would check the regulator, by turning it down to about 10 PSI and running it and see if it builds again, if that works then it is the check valve. But from what you are saying I would replace the check valve anyways.

Jun 05, 2010 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

Craftsman 1 HP 4 Gal air compressor runs and sounds like the air pump is working but no pressure is building up


Cold weather will freeze the water the compressor normally makes and this can prevent the switch diaphragm from releasing.... also drain the tank

Dec 27, 2009 | Craftsman 1 Hp, 4 Gal. Air Compressor

2 Answers

Wont build pressure over 25 psi after rebuild


sounds like the belt is slipping have you checked the inlet and discharge valves also could be bad and leaking or stuck or installed wrong

Feb 19, 2009 | Air & Gas Compressors

Not finding what you are looking for?
Porter Cable 4 5 Gallons 150PSI Job Boss Oil Lube Mobile Air Compressor ? C3551 Logo

196 people viewed this question

Ask a Question

Usually answered in minutes!

Top Porter Cable Air & Gas Compressors Experts

John Trevino

Level 3 Expert

1378 Answers

JOHN LAPIER

Level 3 Expert

2384 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you a Porter Cable Air and Gas Compressor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...