So I got the radiator replaced!! Yahoo!!! My old one was split right on the top and sprayed out everywhere (before a ungly jb welb mend).

So I got the new one in, right? Installed it, no problem. I added some Zerex G05 from pep boys.

Sooooo..... NO water pump action. This is a heartbreak. My temp gauge in the car got up to about 100c. The water pump didn't kick on!!! I tested it by squeezing the large upper hose and feeling for pressure. NOTHING! I'm hoping this is a thermostat defect. The documents from the previous owner state that the water pump was replaced in 2002. Any thoughts??

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'90 300SE --- 173k miles --- (Odometer just stopped working!)

'85 Cali 300D --- 193500 miles --- (Second one) Sold Nov '10

'82 300TDT --- 236,xxx miles --- (My first one) Sold July '09

Did you flush the system. I have heard about globs of nasty stuff coming out of heater cores with a good citric acid flush. Is there a bleeding procedure to get all the air out of the system. Do a search and see what you can find.

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Doug

1987 300TD x 3
2005 E320CDI

It happened to my 1987 300D when I changed the coolant too. Adding more coolant cured that problem. If using less than 2 gallons of coolant that means the system may not filled to capcity.

good luck.
thang

Typical problem after a raditor replacement. There's air in the system. It is very difficult to burp these systems. The best way is to fill the system thru the top radiator hose while the nose is pointed uphill at a steep angle. You need to run the system for a while with the heater on full blast, then continue adding coolant until it is full.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

I agree that there is air in the sytem. The water pump is always running so it does not "kick" on. Air in these cars reaks havoc for sure.

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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair

yep. air.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

okay. Air. Got it....

anyone got any other ideas for getting the air back out (besides a shop vac )??

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'90 300SE --- 173k miles --- (Odometer just stopped working!)

'85 Cali 300D --- 193500 miles --- (Second one) Sold Nov '10

'82 300TDT --- 236,xxx miles --- (My first one) Sold July '09

Burp as described above. No need to worry about another method......

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

Hmm... Okay, so I can get the car on an incline..... Now fill it using the upper hose?? The small one?? The large one would simply drench me if I tried it that way, right? Fill with the car running, right??

So far, (I've got a turbo) I've only put in about a gallon and a half into the overflow tank, and she won't take anymore in there. She needs to burp, in a bad way. If anyone has any other helpful pointers, I would really appreciate it.

Thanks,

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'90 300SE --- 173k miles --- (Odometer just stopped working!)

'85 Cali 300D --- 193500 miles --- (Second one) Sold Nov '10

'82 300TDT --- 236,xxx miles --- (My first one) Sold July '09