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Tech Tip: How Can You Tell if a Head Gasket is Leaking or Has Failed? Oklahoma City OK

Depending on the application and how much labor it requires, the repair bill might run $1,500 or more for parts and labor. The parts required to replace a head gasket include not only the head gasket itself, but also all the other gaskets that have to be replaced to disassemble the top of the engine.

Kingsun Auto & Tires
(405) 633-0959
2420 NW 23rd St
Oklahoma City, OK
C & P Auto Electric
(405) 799-2083
815 S Sunnylane Road
Oklahoma City, OK
Autozone
(405) 521-0007
1328 Nw 23rd St
Oklahoma City, OK
Midas Oklahoma City
405-528-3084
2328 NW 23rd Street
Oklahoma City, OK
Autozone
(405) 427-5511
1921 Ne 23rd St
Oklahoma City, OK
Mr. Transmission/Milex (Doug's Automotive)
(405) 633-0954
3900 N. Williams St
Oklahoma City, OK
AutoZone
(405) 521-0007
1328 NW 23rd St
Oklahoma City, OK
Napa Auto Parts
(405) 415-6272
2801 W Reno Ave
Oklahoma City, OK
Carquest Auto Parts
(405) 670-9020
1336 Se 25th St
Oklahoma City, OK
Autozone
(405) 632-0110
5733 S Western Ave
Oklahoma City, OK
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Tech Tip: How Can You Tell if a Head Gasket is Leaking or Has Failed?

By Larry Carley   email
Technical Editor
November 10, 2009

The first symptoms of a head gasket that is failing are usually a slow loss of coolant with no visible leaks, engine overheating and/or a Check Engine light with cylinder misfire codes.

The first symptoms of a head gasket that is failing are usually a slow loss of coolant with no visible leaks, engine overheating and/or a Check Engine light with cylinder misfire codes.

The Onboard Diagnostic II system should detect any misfires that occur due to a loss of compression or spark plugs fouled by coolant seeping into a combustion chamber. So if a vehicle has a Check Engine light on and a cylinder misfire code, the spark plug in that cylinder should be removed and inspected for coolant fouling. A compression or leak down test should also be done to see if the cylinder is losing compression. Internal coolant leaks caused by a leaky head gasket can usually be diagnosed by pressure testing the cooling system.

Regardless of the cause, a head gasket failure is bad news for the vehicle owner.

Depending on the application and how much labor it requires, the repair bill might run $1,500 or more for parts and labor. The parts required to replace a head gasket include not only the head gasket itself, but also all the other gaskets that have to be replaced to disassemble the top of the engine. This includes the intake and exhaust manifold gaskets, too, plus new cylinder head bolts if the applicat...

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