Lincoln mark VIII has no water leaks but gets hot after running for a while. What else could the problem be?


Asked by Jun 29, 2013 at 12:21 PM about the Lincoln Mark VIII

Question type: Maintenance & Repair

The car is at a mechanic shop now, he has assured me that there is no water leaks. he
does not know what it could be without getting onto the engine itself.

5 Answers


Well, it could be a bad water pump... That is the most likely culprit. Hopefully it is just a sticking thermostat or a clogged radiator or something like that, but the water pumps on those cars are powered by the timing chain and will not usually show signs of leaking externally.

2 out of 2 people think this is helpful.

though not advisable, recommend running completely without the t-stat in place, that way will be WIDE open to it's cooling potential...if this changes nothing would get a thermometer gun and point it at the radiator to see where the hot spots are then....replace the radiator (if you suspect clogging, and labored flow)~

1 out of 1 people think this is helpful.
Tracy Hooks

Your mechanic can hook a good scan tool and watch the temperature reading to see if the engine is actually getting hot. It could be a faulty indicator or just that it looks like it's running hot. Overtemp at low speeds is usually a inoperative fan or water flow problem. Your Mechanic should also do a leakdown and compression test if everything else fails. Does it run ok? Don't let hum open the motor unless he's Certified and insured. That motor is mostly Aluminum and takes training and special tool to disassemble and reassemble properly.

1 out of 1 people think this is helpful.

It could be a very simple fix...I just had the same problem on my '95 Mark VIII. After about 5 minutes the temp gauge registered hot... the needle wouldn't move for the first three minutes or so but once it did went to the hot level. I had a radiator shop put in a new thermastate, flush the radiator and engine and put in new coolant mixture of 50/50 antifreeze. The car now is running normal. One thing to always watch for. Since our cars have a sealed system, keep your eye on the coolent resorvoir. It should always be full when cold. If you see it is below then always add coolent to the top of the fill mark on the container. only do this when the engine is cold. Hope this helps

1 out of 1 people think this is helpful.
Geo Rowland

The top center fill valve (open with hex) may have to be removed to fill with coolant; rest of system may be full but not water jacket.

Your Answer

Add photo

Related Questions

  • My 96 Lincoln Mark VIII is overheating 6 answers

    I had to drain the coolant in order to replace the oil filter adapter gasket. After the repair, I attached everything back, and there are NO leaks of any kind...oil or coolant. I was happy with th...

    1996 Lincoln Mark VIII 2 Dr LSC Coupe


    Maintenance & Repair

  • after changing the thermostat in my 1994 lincolnmark 8 it still over heats 1 answer

    I changed my thermostat and it still over heating the water pump is ok , I have no water in my oil or no oil in my water . Did I forget something during changing my thermostat

    1994 Lincoln Mark VIII


    Maintenance & Repair

  • Lincoln mark viii brake issue. 2 answers

    I was driving to work last week, and while I was driving my brake pedal just started traveling all the way to the floor. My abs, and brake warning light are always on now, and I seem to only rece...

    1993 Lincoln Mark VIII 2 Dr STD Coupe


    Maintenance & Repair

  • What does a Mark VIII do when it needs a MAP sensor 5 answers

    Hesitates and acts like it needs a tune up

    1996 Lincoln Mark VIII 2 Dr STD Coupe


    Maintenance & Repair

  • Mark viii audio problem 2 answers

    I have a 96 lincoln mark viii and it had a dual media player in it and one morn. It just started popping constantly till i turned power off to it.. i put a better kenwood in it and it wont even pow...

    1996 Lincoln Mark VIII 2 Dr LSC Coupe


    Car Customization


Looking for a Used Mark VIII in your area?

CarGurus has 70 nationwide Mark VIII listings and the tools to find you a great deal.


Search Lincoln Mark VIII Questions

Lincoln Mark VIII Experts

#1 Paul Thoreson
Paul Thoreson
Reputation 470
#2 dawneichten
Reputation 440
#3 Tom Demyan
Tom Demyan
Reputation 330
View All

Related Models For Sale

Used Lincoln Continental"
1,940 listings starting at $42,556
Used Lincoln Town Car"
56 Great Deals out of 2,377 listings starting at $1,542
Used Ford Mustang"
717 Great Deals out of 41,256 listings starting at $900
Used Lincoln MKZ"
233 Great Deals out of 15,091 listings starting at $2,995
Used Cadillac Eldorado"
452 listings starting at $7,995
Used Lincoln Mark LT"
13 Great Deals out of 275 listings starting at $7,995
Used Lincoln LS"
798 listings starting at $2,900
Used Lincoln Navigator"
135 Great Deals out of 6,055 listings starting at $1,999
Used Cadillac DeVille"
2,395 listings starting at $1,600
Used Pontiac Grand Prix"
28 Great Deals out of 4,397 listings starting at $1,972
Used Lincoln Blackwood"
30 listings starting at $6,995
Used Chevrolet Corvette"
412 Great Deals out of 20,178 listings starting at $3,688
Used Ford Thunderbird"
36 Great Deals out of 1,179 listings starting at $6,777
Used Ford F-150"
3,180 Great Deals out of 216,371 listings starting at $1,900