topher5150
Dedicated LVC Member
i have noticed that my coolant level has been getting low. not on a regular basis, i check it once every couple of months. i don't think it's the head gaskets it's a newer engine, any ideas
oh where oh where did my coolant go
- Thread starter topher5150
- Start date
loosen the 4 bolts on your water pump pulley.
THEN take the belt off
then finish removing the water pump pulley bolts and the pulley
look on the underside of the pump and i'll bet you'll find traces of coolant
when it has run down, but has been hidden by the pulley
then while your there, run down and get the improved style water pump with the anticavitation impeller design
when you take the stock mark 8 pump out, look at the exposed impeller design, the improved design has a metal plate welded over the fins, it reduces drag, cavitation, electrolysis and improves cooling
keep in mind there is a long and a short pump for the 4.6 dohc
so take your old pump to the store with you, so you can determine of you need the long or the short pump
set both pumps on the counter impeller facing down, the difference between the long and short pump is easily seen.
the hassle of getting the better pump IS worth it
Psychostang
Dedicated LVC Member
could be a small radiator leak.
96hotrodlincoln
Dedicated LVC Member
+1
Mine has started leaking a little again with the cooler weather. The end caps tend to leak after awhile is what chicken told me. I checked it out and sure enough. I guess the seal just isn't as tight when it gets cold.
Staffamerica74
Dedicated LVC Member
All my marks have lost coolant randomly never seen any leaks on any of them tho.
kustomizingkid
Dedicated LVC Member
Sean Hyland pump FTW!
topher5150
Dedicated LVC Member
Do dyeing water pumps make a particular sound
NYC LS8
Dedicated LVC Member
Leaky oil filter adapter gasket?
nsjuice
Active LVC Member
mine does the same. Computer says low coolant. So I fill it up, which at times isn't much at all to make the message go away. And this is once every 2-3 months if I drive her on the freeway a lot.
Does this mean new water pump is due? I've been going at this for a year now.
Does this mean new water pump is due? I've been going at this for a year now.
If it's leaking from the weep hole, then it's only a matter of time before the coolant passing thru the bearing will kill the bearing causing the water pump to fail.
The improved pump cost about 75.00 if I remember correctly
Changing the pump is a breeeze, it's unlike any ford I have ever worked on.
Ford "used" to hang every accessory off of the water pump.
On the 4.6 dohc there is nothing bolted TO the water pump, not even a radiator hose.
When you change the pump, make it easy on yourself and take the alternator off, it goes ALONG way in making the pump removal much easier.
The only way to tell if the pump is leaking out the weep hole is to pull the pulley off of the pump and inspect the underside of the water pump snout.
once the pulley is removed, it should be fairly obvious if it's leaking
hope this helps.
laserp viii
Well-Known LVC Member
hey where did you get the pump at i`ve having the same issue i tho.. it was just me.
Staffamerica74
Dedicated LVC Member
99 cobra is the improved design.
I got my cobra pump at Oreilley's.. it was 74ish dollars
codycobra98
Active LVC Member
I know this is an old thread but I just realized my water pump is leaking from the bottom, but only when I remove the coolant filler cap. After I screw the coolant filler cap back on the leaking stops. Is this just another sign of a bad water pump? Does taking the cap off allow the pressure to flow more freely? I thought it was a little odd.
Right on the Mark
Dedicated LVC Member
WP 's should not leak at all. If yours does,at any time thats not good.
chris2523
93 Mark VIII
yeah... sounds like its time for a new one.
codycobra98
Active LVC Member
Its obviously not good. The low coolant light was coming on, then the belt broke. While replacing the belt I removed the filler cap on for the coolant and antifreeze began leaking from the bottom of the water pump.
Ill be getting a new water pump soon. Anyone know if a 97-98 water pump is the same as a '96?
Thanks.
chris2523
93 Mark VIII
yeah. and the 99 mustang cobra has a less restrictive water pump as well.
warrioralumni08
Dedicated LVC Member
Anybody know, what the correct size is for the 99 Cobra pump, for the Mark?