How do I know if its the head or head gasket?

Asked by Dec 05, 2014 at 10:25 AM about the 2003 Pontiac Grand Am

Question type: Maintenance & Repair

4 Answers

11,550

Don't understand question ... either one requires the same amount of work to get too. Of course a replacement head is far more expensive than a gasket repair. ( If it's a quad 4 engine ... I have one you can have) If the engine was overheated it sometimes distorts the surface between the engine and the head causing the gasket to fail thus requiring an engine "tear-down" ... quite expensive probably $1500 or more. If the head is distorted then it will have to go to a machine shop to be made flat

1 of 1 people found this helpful.
9,050

Tests must be run. Cooling system pressure tester, 15 min. remove sp. plugs. crank over. watch for wet hole(s). Compression test. Cylinder leak down. These will all work. or, pressure in the cyls with shop air and take rad cap off and wait. watch for air escaping through the coolant. There is the combustion gas test, add dye to tester, hold over the cap area above the liquid with eng. run at op temp. observe color change in the dye inside the tester. Look for coolant discoloration on spark plugs, o2 sensor gets fouled by coolant to tell you what side? on some engines. But the rate of the leak, the type of evidence, the severity, they can all indicate. A technician learns by experience. There is a judgement call factor. There are also many tools to buy to get more effective and more precise. Ask one for help. That's why they go to all that school for years and buy all those expensive tools. So you can try to fix your own with a armload of guesses.

1 of 1 people found this helpful.

What is this

What is this. And if bad what will it cause it to happen

Your Answer

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 975 nationwide Grand Am listings starting at $2,595.

ZIP:

Pontiac Grand Am Experts

  • #1
    tenspeed
    Reputation
    7,980
  • #2
    John Saffrahn
    Reputation
    1,630
  • #3
    Tom Demyan
    Reputation
    1,590
View All

Related Models For Sale

Used Pontiac Grand Prix
12 Great Deals out of 2,457 listings starting at $950
Used Pontiac Firebird
9 Great Deals out of 720 listings starting at $1,649
Used Chevrolet Impala
559 Great Deals out of 33,307 listings starting at $1,499
Used Ford Mustang
430 Great Deals out of 41,722 listings starting at $1,488
Used Chevrolet Camaro
506 Great Deals out of 30,983 listings starting at $995
Used Nissan Maxima
348 Great Deals out of 20,620 listings starting at $1,175
Used Honda Accord
917 Great Deals out of 77,850 listings starting at $1,295
Used Pontiac GTO
6 Great Deals out of 414 listings starting at $4,995
Used Chevrolet Malibu
1,067 Great Deals out of 57,948 listings starting at $995
Used Jeep Grand Cherokee
1,086 Great Deals out of 67,197 listings starting at $950
Used Pontiac Bonneville
440 listings starting at $1,500

Used Cars For Sale

2002 Pontiac Grand Am For Sale
106 listings starting at $2,595

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.