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Old 07-19-2008, 02:15 PM   #1 (permalink)
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Default Bleeding coolant

Does anyone know how to bleed the coolant on a 1991 f6a suzuki engine?
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Old 09-17-2008, 07:16 AM   #2 (permalink)
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Talking Bleeding coolent same as flushing radiator

Stolen from another post!!!!!

03-20-2008, 11:11 PM #1 (permalink)

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How to flush the radiator?


Bros, what is the proper way to flush the cooling system of our rear-engined Suzuki Carry Scrum?

to the DIYs out there, please share your procedures and techniques.


03-24-2008, 01:45 AM #2 (permalink)

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This is how I do it:

1. Before doing anything, make sure your engine has cooled off already.

2. Get an empty wide container (abt. 1 Gal capacity). You can use your "labador".
This will collect your coolant later. They say "dispose properly", may be fatal or deadly
if swallowed. But if you only use distilled or mineral water (rain water), you can skip
step # 2~3 and proceed to step # 4.

3. Place the container below the radiator.

4. Open your radiator cap.

5. Open the radiator drain (plastic butterfly valve) just below the front bumper.

6. Let the coolant drain for a while.

7. Cover your distributor assembly with plastic/ cellophane.

8. Open your engine hood (for rear engines).

9. Open the two vent screws (incoming & outgoing) on the water/coolant pipelines to further drain your coolant. They are directly above your
distributor assembly. These two screws are close to each other.
(see attached pics)
vent screws.JPG

10. Connect your garden hose to your faucet & insert the other end
to your radiator.

11. Let the water clean your system for some time (say 5min.). You will notice some dirty water (brownish) flowing out of your drains.

12. Optional:
Close the radiator drain and one screw vent at the back. Let the water fill
your radiator. Turn ON your engine (do not rev) & make sure your water
supply is continously supplying enough water to the radiator so as to prevent
overheating. Some dirty water will overflow through that one remaining open vent. Let the water clean your cooling system for at least 5 min.

* In my case, I didn't cover my distributor but it's better to be safe & sure.
So cover it properly then.

- Turn OFF your engine.
- Open all the drains & let all the water drain OUT of your system. In my case,
our garage is a bit inclined which means that I can drain most of the tap
water. You can jack up both your front tires if you want.

13. Close the radiator drain. (Do not close the 2 vents at the rear)

14. Refill your radiator with new coolant / distilled water / etc.
(Take note the engine is already OFF)

15. Get one assistant who will watch the two vents at the back.

16. As soon as the coolant overflows through the two vents at the back,
close both screw vents immediately.

17. Continue filling the radiator until it reaches the rad. cap level.

18. Turn your engine ON. This will make your water pump run & fill some
void spaces in your system.

19. Observe the reaction of your coolant at the radiator opening.
There should be no bubbles forming (from leaking cylinder gaskets?? head problem??).
But you should not confuse it from the turbulence created by your running
water pump. So there is at least some water splashing or spilling out of your

20. Continue filling your radiator & "bleed" your rad. hose. Some say you can
press on the big rad. hose to free some air inside. But for me, running the
engine itself for some time solves the problem.

21. Close the radiator cap. Make sure it's free from rust & dirt. Also check
if the springs are working. If you're not sure, better buy a new one.

Some tips:

1. If you want to use a radiator flush, you can simply add the solution
to your radiator & run the engine for some time before flushing it.
(or you can read the instructions on the container itself)

2. It's better to "overhaul" your radiator at least once every two years.
Here in Cebu it costs only P180 for a 2-row radiator like mine. Some have only one row, others have three. They just take out your radiator, run constant water through the tubes while cleaning the grimes. Here they
use an old steel hacksaw blade to clean the tubes.

3. Jacking up your front tires or doing it on an inclined garage will ensure
maximum filling of coolant in your system. What I mean is that you can put
"more" coolant this way compared if its flat or inclined the opposite way.

4. Dispose your coolant properly. Your pets can easily die if they drink from
it. The "fruity" smell of the Prestone coolant is very enticing & tempting
for them. Wash your hands after.

5. Don't forget to clean your "reservoir" too & fill it with water or coolant.
It's located in a compartment below your 2nd row seat, opposite the
oil filling compartment.

If you use Prestone anti rust and distilled water, you wont have to rod your radiator, AND your ride will run much cooler!

Last edited by newsavedone; 09-17-2008 at 07:21 AM.
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