I have a 1999 grand marquis and was changing out my spark plugs and found ain't freeze on em and on the ground don't where the leak is . How can I find the leak

Mar0532
25

Asked by Mar0532 Mar 07, 2013 at 04:18 PM about the 1999 Mercury Grand Marquis 4 Dr LS Sedan

Question type: Maintenance & Repair

2 Answers

EdS2K
415

Was the antifreeze on the outside of the plug or on the electrode part? If it was on the outside try running your hand on the areas above the plugs (when engine is cold) and see if you can locate the source. Check hoses and clamps carefully as well. Antifreeze can drip down a hose from the area where the actual leak is.

MrBlueOval
3,045

If the anti-freeze is on the electrode part of the sparkplug and it didn't drip or run down from up above onto the plug, that means that you probably have a blown head gasket and antifreeze from the cooling jacket in the head is passing thru the blown area of the head gasket and getting into the engine block cylinder. Your engine is so hot inside that it will burn off the anti-freeze just like the gasoline in the cylinder thus you won't show a leak on the outside or it might be so small of a leak that you won't see it. Either way if you have anti-freeze where you should have it, then there is a leak somewhere and more than likely from a blown head gasket or a wornout heater hose or even a worn radiator hose depending on where you found the fluid. They do make a dye that you can pour into your radiator or overflow tank and then you hold a small blacklight against your engine and the dye will show up under the blacklight light. The auto parts store should have the dye and the blacklight to go with it, maybe in a kit or separately. Or you could take it to a repairshop or a radiator shop and have them check it for you, but don't drive the car too far if it's leaking anti-freeze as you could do major damage to your engine as it will over heat without the right amount of fluid in the radiator. Good Luck, Kenny/MrBlueOval.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • My grand marquis is overheating and smoke is coming from the area where the radiator hose plugs in the top of engine? 4 answers

    I recently did an all around tune up on my car new filters, valve cover gaskets, plugs & wires etc. I also had to remove my entire air intake and throttle valve to change 2 leaking fuel injectors...

    1988 Mercury Grand Marquis

    -

    Maintenance & Repair

  • MY CAR IS RUNNING ROUGH FROM TIME TO TIME. 15 answers

    About a month ago my 1998 Mercury Grand Marquis started running rough after I pumped regular gas at a Chevron Station. As the car has 67,000 miles I took it to Sears Auto Center to have the spark plug...

    1998 Mercury Grand Marquis 4 Dr GS Sedan

    -

    Maintenance & Repair

  • Where is the first place to look for vacuum leak on A/C heater stuck on defrost? 5 answers

    My Grand Marquis ac heater is stuck on defrost. I've read I should look for a vacuum leak? Where should I look? Do I need to pull the dash out? Replace vacuum switch? Do I look under the hood?

    2006 Mercury Grand Marquis

    -

    Maintenance & Repair

  • 2000 Grand Marquis Air Ride 3 answers

    The air ride in my 2000 Grand Marquis doesn't seem to be working. There is no warning light, but the back of the car is sitting much lower than the front(the top of the wheels are under the top of th...

    2000 Mercury Grand Marquis LS

    -

    Maintenance & Repair

  • my 2000 grand marquis wont start , 7 answers

    got the intake manifold replace cuz it was crack and leaking ,,, but after everything was hook up back and ready to started ,it just turns but it wont start , it just sounds like it got no gas or ou...

    2000 Mercury Grand Marquis LS

    -

    General

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 1,920
#2 kbro
kbro
Reputation 1,060
#3 Mark Langolf
Mark Langolf
Reputation 450
View All

Related Models For Sale

Used Ford Crown Victoria"
27 Great Deals out of 1,500 listings starting at $1,750
Used Lincoln Town Car"
118 Great Deals out of 2,936 listings starting at $1,469
Used Chevrolet Impala"
1,732 Great Deals out of 59,299 listings starting at $995
Used Ford Taurus"
568 Great Deals out of 19,312 listings starting at $800
Used Cadillac DeVille"
58 Great Deals out of 3,055 listings starting at $1,750
Used Ford Mustang"
1,048 Great Deals out of 25,761 listings starting at $1,329
Used Buick LeSabre"
111 Great Deals out of 3,239 listings starting at $1,250
Used Ford F-150"
2,671 Great Deals out of 169,188 listings starting at $1,495
Used Chevrolet Camaro"
593 Great Deals out of 28,692 listings starting at $1,795
Used Toyota Camry"
1,586 Great Deals out of 70,498 listings starting at $1,395
Used Nissan Altima"
1,544 Great Deals out of 80,582 listings starting at $995

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
3 Great Deals out of 42 listings starting at $10,589
2010 Mercury Grand Marquis For Sale
9 Great Deals out of 124 listings starting at $9,495
2009 Mercury Grand Marquis For Sale
7 Great Deals out of 162 listings starting at $7,999
2008 Mercury Grand Marquis For Sale
18 Great Deals out of 287 listings starting at $4,950
2007 Mercury Grand Marquis For Sale
16 Great Deals out of 262 listings starting at $3,995