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CENTRAL LOCATION
5302 E Speedway Blvd Tucson, AZ 85712

520-325-5500

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8455 E Broadway Blvd Tucson, AZ 85710

520-298-1103

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4443 W Ina Rd, Suite 141 Tucson, AZ 85741

520-744-0655
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520-325-5500 | 5302 E Speedway Blvd

AUTONET TV

AUTONET TV, Tucson, AZ

PCV Valve Replacement

Posted November 10, 2019 11:39 AM



Hello Tucson, let's talk about your often-unnoticed but extremely important PCV valve. The energy from exploding fuel is what powers your engine. But some of the vapors from the explosions escape into the lower part of the engine, called the crankcase. The crankcase is where your engine oil hangs out. These gases are about 70% unburned fuel. If the gases were allowed to stay in the crankcase, they would quickly contaminate the oil and turn it to sludge. Tucson folks know that sludge is one of the biggest enemies of your engine, clogging it up and eventually leading to expensive failures. Also, the pressure buildup would cause seals and gaskets to blow out. Therefore, these gases need to be vented out.

Pre-1963, gasoline engines had a hose that let the  fumes vent out into the air. In 1963, the federal government required gas engines to have a special one-way valve installed to help reduce dangerous emissions. (Can you imagine how polluted our AZ air would be if every car had been releasing those poisonous fumes for the last 50 years?) Diesel engines are not required to have these valves.

The positive crankcase ventilation (PCV) valve routes crankcase gases through a hose and back into the air intake system where they are re-burned in the engine. Fresh, clean air is brought into the crankcase through a breather tube. It's really a pretty simple system, but it does the job. The re-circulating air removes moisture and combustion waste from the crankcase, preventing sludge. This extends not only the life of your oil but the engine as well. The PCV relieves pressure in the crankcase, preventing  oil leaks.


Eventually, the PCV valve can get gummed up. Then it can't move enough air through the engine to keep it working properly for Tucson vehicles. If the PCV valve is sticking enough, you could have oil leaks, excess oil consumption and a fouled intake system. If you experience hesitation,  surging or an oil leak, it may be a sign of PCV valve problems. Your vehicle's owner's manual may give a recommendation for when the PCV valve should be replaced - usually between 20,000 mi/32,000 km and 50,000 mi/80,000 km. Unfortunately, some don't list a recommendation in the manual, so it can be easy to overlook.


Many PCV system problems can be diagnosed by our technicians at AASTRO Transmission & Auto Repair . Fortunately, PCV valve replacement is both quick and inexpensive at AASTRO Transmission & Auto Repair. Proper oil changes will greatly extend the life of the PCV valve. Skipping a few recommended oil changes can allow varnish and gum to build up in the valve, reducing its efficiency. So now when your Tucson service technician tells you its time to replace your PCV valve, you will know what he's talking about. If you have had your car for a while and this is the first you've ever heard of a PCV valve, ask your technician to check yours out or call AASTRO Transmission & Auto Repair at (520) 325-5500.

AASTRO Transmission & Auto Repair
5302 East Speedway
Tucson, AZ 85712
(520) 325-5500
https://www.aastrotransmission.net



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, 12/02/2019
They seem to be nice people and fair on their pricing. I appreciate their nice attitudes. The manager Jeremy has a very pleasant manner which I appreciate dealing with.
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