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Tech Tip: How Can You Tell if a Head Gasket is Leaking or Has Failed? Portland OR

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.

Rob's Automotive 4 Wheel Drive and Diesel Repair
(503) 967-7352
11955 SE Highway 212
Clackamas, OR
Napa Auto Parts
(503) 233-2533
730 Se 9th Ave
Portland, OR
Midas Portland
503-288-6033
2326 NE Broadway
Portland, OR
Carquest of Woodstock
(503) 777-4756
4207 Se Woodstock Blvd
Portland, OR
AutoZone
(503) 335-3002
4458 NE Cully Blvd
Portland, OR
In & Out Auto Care
(503) 462-7043
610 E 1st St
Gladstone, OR
eBay Consignment and Resale in Portland, OR
503-9675847
SE Portland
Portland, OR
Maaco Auto Body Shop and Collision Center
503-281-3312
2529 North Ross Avenue
Portland, OR
Autozone
(503) 335-3002
4458 Ne Cully Blvd
Portland, OR
Carquest Auto Parts-Interstate
(503) 249-7001
4315 N Interstate Ave
Portland, OR
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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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