Removing air from cooling system

[Sultan]

Stats – 86 B2 with a 2.9.

So I thought I was following the directions correctly but I think I have an air bubble.

When I put in the coolant I disconnected the heater hose but didn't know that I need coolant to come out. Instead I turn the hose up so it wouldn't leak out...duh. So far I have only been able to get a gallon and a half of coolant in.

So all that to ask; how do I get the air out?

 

[Spott]

Ideally, you want to park your truck facing uphill at a 30-45 degree incline, if you can find a suitable place. Even if you can't, the rest of the process helps.

Squeeze the upper radiator hose tightly, and release, several times, then top off your coolant. Repeat the squeeze/fill cycle a few times. Once you feel or hear that there's no "bubbling" when you squeeze and release the hose, you're ready for the next step.

Fire up the engine, and squeeze that radiator hose several more times for good measure. Watch out for the fan! Don't let the truck run for more than a few minutes.

Turn off the engine, and carefully remove the radiator cap. If the coolant is below the top of the radiator, then repeat the squeeze/fill cycle again until you feel/hear no more bubbles.

Finally, cap the radiator, and fill the overflow tank between 1/2 and 2/3.

Drive around for a day or so (off-roading may speed the process), and then re-check the coolant. If it's below the top, then repeat the entire process again.

Eventually, all the bubbles will work out.

Spott

 

[Sultan]

thx Spott!

 

[Duane867]

Just jack the front end up with a jack or drive it up a pair of car ramps.
Then do the old hose squeeze.
I am not sure that was a type-o or not but I would definitely NOT park my truck on a 45 degree incline and get out to bleed the cooling system LOL !
30 degrees would be bad enough.....
for reference.......
45 degree angle :

30 degree angle:

20 degree angle: ( which would suffice more then enough IMHO )

 

[Spott]

Hey, if your truck has enough balls to get up a 45 degree slope, it couldn't hurt, right?

But you're probably right, even a moderate slope is probably enough. Around here, pulling a few feet up a canal bank would be good.

Spott

 

[doorgunner]

and ffor good measure.....turn the heater on while you're "burping" the air outta the system...it could take 20 minutes sometimes to get all the air out...

SO--WATCH THE TEMP. GAUGE CLOSELY!!!!!