engine coolent leaking more!! - PeachParts Mercedes-Benz Forum

greasybenz · #1 04-04-2006, 08:55 PM

Most of you said i shouldnt worry about a small leak of engine coolent until it becomes major, well i didnt worry but now its excesive leaking!
Took the car to school and just got back now its leaking alot of engine coolent! Once i got in the garage and got out the car i heard splashing drips.

Look under the car and see alot of engine coolent coming out steaming hot!

so i put the car in nuetral and roll it out but i cant see where its coming from

Where should i look any pics on specific locations to look?

EDIT: it is coming from the front of the engine but when i try to follow the little flow of enigne coolent i loose the trail once i pass the radiator fan.

tangofox007 · #2 04-04-2006, 09:55 PM

The water pump is a likely candidate. When they leak, they tend to get progressively worse. They also tend to leak just after the engine is shut down. So if the leak is coming from behind the fan, look at the water pump.

greasybenz · #3 04-04-2006, 11:02 PM

if it is the water pump what can i replace to stop the leaking?

Brian Carlton · #4 04-04-2006, 11:09 PM

Quote:

Originally Posted by greasybenz

if it is the water pump what can i replace to stop the leaking?

If the pump is leaking, you purchase a new pump and replace it. I suggest getting a box wrench (6mm??) and grinding the nose down to allow you to remove the four screws holding the fan. An open end wrench usually rounds them off.

Tom Valdriz · #5 04-05-2006, 03:08 AM

Agree with Brian: I had the same thing happen with my 83 240D.
Water pump time.

peter811 · #6 04-05-2006, 08:41 AM

I had a bad coolant leak on my W115 and at first I thought it was the water pump so I replaced it, but at closer examination i found out it was the rubber hoses so I replaced the hoses and all was well.
I recommend that you replace your water pump and all the hoses aswell.

vstech · #7 04-05-2006, 09:38 AM

with the engine cool, pump up the system to about 8 or so psi and watch for leaks. Much easier to find leaks when you aren't worried about parbroiling yourself.
the front of my 82SD has several hoses that are difficult to get at.
water pump has a weep hole top and bottom put finger over hole and see if it has water pushing out the hole.
if not, it could be the shaft seal, or the gasket itself... also in the same general area is a small steel line with banjo bolts that transferrs coolant between the block and the head. I think it is called a steam line look over it pretty well, but don't open it up, unless you want to replace the crush washers.
around to your left, are the hoses that connect the thermostat housing to the block, it is about a 1.5" hose and mine leaked, so that could be the problem, but to replace it, you will need thermostat housing gasket as well.
I strongly reccomend you get the autozone pump up tool, ignore all the adapters that come in the kit, just hook the end of the pump up where the radiator cap goes and start pumping. then look for leaks.
enjoy!
John

greasybenz · #8 04-05-2006, 10:16 AM

What if i just replace the gaskets. ********.com has the gaskets for about 50cents. The water pump itself is $50. But that $50 i dont have until next week (paycheck)

thorsen · #9 04-05-2006, 10:22 AM

It's likely the water pump, not the gasket leaking. The internal seals on the water pump have likely failed, and water coming out the weep hole is your sign to replace the water pump.

If you don't have the $ to fix it until next week, park the car. If you overheat themotor, you'll wish you only had to replace a $50 pump.

tangofox007 · #10 04-05-2006, 11:45 AM

Quote:

Originally Posted by greasybenz

What if i just replace the gaskets. ********.com has the gaskets for about 50cents. The water pump itself is $50. But that $50 i dont have until next week (paycheck)

The pump might be cheaper at the dealer. The last one I bought was $25.

greasybenz · #11 04-05-2006, 07:32 PM

Quote:

Originally Posted by tangofox007

The pump might be cheaper at the dealer. The last one I bought was $25.

$25! ok ill call my local dealer see if they can get me one. thanks

tangofox007 · #12 04-05-2006, 07:50 PM

Quote:

Originally Posted by greasybenz

$25! ok ill call my local dealer see if they can get me one. thanks

That was a couple of years ago. But the dealer was cheaper than anyone else by a good margin. They did charge a refundable core deposit of $75. When they first quoted the price, I was sure they had gotten the pump price and core charge reversed!!! NAPA wanted $70 for the pump, but did not have one in stock. Otherwise, I never would have called the dealer. It 's not often that the dealer has the lowest price. Water pumps must be an exception.