curculation problem

sheehy7474 Learner Dubber

15 posts · joined Sep 2005 · 6 Apr 2006, 8:43 pm

#472599

Could someone please help me. I have a ej22 moter in my kombi with the radiator behind the bullbar, but water just doesn!t cerculate properly. I have bled the system plus put a new thermostat in what am i doing wrong. help please.

Volkswagenboy Staggers Automotive.

2,437 posts · joined Jul 2005 · 6 Apr 2006, 8:45 pm

#472604

How's the waterpump?
-Staggers.

STAGGERS AUTOMOTIVE - Heavy Vehicle Diesel Specialist

JB CUSTOMS & CLASSICS - Car Builders

2/53 Tradelink Drive, Browns Plains

sheehy7474 Learner Dubber

15 posts · joined Sep 2005 · 6 Apr 2006, 8:47 pm

#472607

not sure how would i go about testing it.

kevo Officially Full-On Dubber

371 posts · joined Mar 2005 · 6 Apr 2006, 9:16 pm

#472628

well if you pull off the rad cap ( do this before you start the car when cold) and you cant see water moving in the radiator once the water temp has reached operating temp, then that is a sure sign the water pump is not pumping!

other reasons may be because you have a suction in the radiator pipes due to them being rubber perhaps??? i have heard of that happening on bullbar rad setups before

from the engine, how far do the coolant pipes get warm? if not far then again the water pump is rooted,

how long does it take to reach prime operating temp? bout 90 for those engines im guessing...

and least but not last... do you have an air bleed valve at the highest point in the engine bay? if you dont you will have maybe up to 3L of air in your engine and pipes, because when you fill up the coolant at the front the water is forcing the water up and if theres no where for it to go it will just bake up in your engine and your water pump may be spinning steam! therefore not pumping water!!!

goodluck

kevo

76 baywindow kombi - V8 & Weddle racing diff and gearbox
Daily driven beach cruiser

Volkswagenboy Staggers Automotive.

2,437 posts · joined Jul 2005 · 6 Apr 2006, 9:19 pm

#472630

Therefore overheating!
-Staggers.

STAGGERS AUTOMOTIVE - Heavy Vehicle Diesel Specialist

JB CUSTOMS & CLASSICS - Car Builders

2/53 Tradelink Drive, Browns Plains

boof2332 Custom Title Time!

1,210 posts · joined May 2004 · 6 Apr 2006, 9:49 pm

#472647

The bleed is the key. I have a one way valve at the top of my radiator..when filling, you can quickly expell the trapped air....mine can overheat in a few minutes with an air lock.

Matt

GeorgeL Officially Full-On Dubber

231 posts · joined Feb 2006 · 7 Apr 2006, 12:51 am

#472723

sheehy7474 wrote:Could someone please help me. I have a ej22 moter in my kombi with the radiator behind the bullbar, but water just doesn!t cerculate properly. I have bled the system plus put a new thermostat in what am i doing wrong. help please.

Do you have the heater loop connected from the water outlet on top of the engine to the nipple on the thermostat housing? This is what opens the thermostat. Even if you don't have a heater you need to hook up this loop for the thermostat to open!

As others have said, bleeding is also key. You need a bleed valve on top of the radiator, park the bus nose-down, and bleed the air out of the radiator. Keep bleeding until all the air is out.

You have a header tank and overflow bottle near the engine, right? Without that, it's difficult to keep air out of the cooling system.

George

seagull Compulsive Aussie Vee Dubber

4,979 posts · joined Dec 2003 · 7 Apr 2006, 1:43 am

#472728

I made a fill pot for mine .I think Matt & jak have one of the units I made on there rides.
I have a line that runs to the rear it bleads as your filling it .

George is correct as my filler conects direct to the heater outlet on the thermostat.
Remember the water flows from the bottom up .

I have never had an issue.

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