Question about 1998 Ford Mustang

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4.6 intake leak

5 6 7 8 plugs are wet with antifreeze
1 & 3 also
6 plug filed
Is it a bad intake gasket

1998 4.6 mustang

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Are they wet on the outside ? if they r its the intake on the inside head gaskets.

Posted on May 10, 2010


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1 Answer

Why am i lousing antifreeze from my reserivor?

Don't worry bad spelling is OK, Pending on the year make & model (they basically all work the same) Have the cooling system pressure tested for holding PSI. Do you see any white smoke at the exhaust pipe? white spark plugs? Any oil or anti freeze mixing in the radiator or the oil? Dripping from the tailpipe? any of the above, HEAD Gasket, cylinder head, or Intake manifold gasket. We have a Rotten egg smell w/ the heater fan on, wet pass. floorboard? If so then the heater core might be leaking. If the floorboard isn't saturated w/ AF it could be leaking into the firewall. Start w/ the basics, fill rad & overflow to spec., pressure check, ck plugs emissions test, oil coolant mixing. It's rough sometimes but it's going somewhere! Good luck, Frank M

Feb 14, 2016 | Cars & Trucks

1 Answer

Dirty spark plug

Dirty or burnt if its black and sooty your burning oil so its leaking at the intake gasket head gasket piston ring or valve cover gasket(if the plug installs through the top of valve cover) if its light brown and dry your not getting enough fuel(a lean condition) depending on vehicle it can be a variety of things dirty or clogged injectors, bad fuel pressure(regulator pump or clogged fuel filter) if the plug if wet and smells like gas its bad spark(coil,coil pack, the plate the coil packs mount to, bad cam sensor) if its wet and doesn't smell like gas you could be leaking coolant into the cylinder(ie bad head or intake gasket or cracked block) let me know more about the vehicle and more descriptive dirty plug

Jan 11, 2012 | Cars & Trucks

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Losing antifreeze into oil.what is the problem. head gasket or intake gasket..

Hello mspayde925: My name is Roger and I will give you a answer. This could be either intake or head gasket. If it is a head gasket you should be getting white steam from the tail pipe. If it is a intake you should just have coolant in the oil. Most common is the intake gasket. GM put a plastic silicone impregnated gasket on the newer engines. Have a lot of leaks needless to say. Be sure to change the oil after your repairs. Should you need further help please just ask. Please rate the answer you received. Thank You for using Fix Ya. Roger

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The lean condition would be caused by a vacum leak or lower intake gasket leak.

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Antifreeze leaking out of right side of engine but only when heater is turned on. doesnt leak otherwise, what could this be

Have a look for a heater control valve that may be leaking in area near firewall on passenger side, just follow your heater hoses.

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Leaking Coolant

I believe the other one is underneath the motor mount, which means you will have to remove the mount of you need access to it..

Suggest you check your engine oil, it should be either light brown if just replaced, and black if you have over 30K miles on it.

If the oil is brown like in color, maybe you have an intake manifold leak and anti freeze is getting into the motor oil (Bad Bad) Check for leaks in the heater core inside the car and see if the rugs are wet.

Check radiator for discoloration in the fin areas and tank areas. Finally check your radiator cap, maybe its defective and you loose antifreeze through the overflow.

Nov 21, 2008 | 1998 Ford Mustang

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