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  #13  
Old 07-08-2016, 10:18 AM
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Re: Cooling System Help Please!!

I uses this to bleed the radiator in every car I have and it works great while I drink a beer..


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  #14  
Old 07-08-2016, 10:43 AM
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Re: Cooling System Help Please!!

Love it - especially the beer bit!!!

Deep down I think it's exhaust gas that's causing the bubbling but it's one of the strange ones where there's no other symptoms of failure.

There's no misfire and temp is rock solid and no smoke from exhaust.

I'll bleed it again as I didn't bleed it with the front elevated yet.

I really need to get the sniff test done to try and confirm or rule that out.

Thanks,

Paul.
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Old 07-08-2016, 11:15 AM
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Re: Cooling System Help Please!!

The benefit of that funnel is you can fill the funnel so the level of coolant is higher than any part of the cooling system. Once the cooling system is bleed the plunger seals the funnel so you can remove it with no spillage and pour the remaining coolant back into the container by using the funnel and removing the plunger.
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  #16  
Old 07-09-2016, 09:08 AM
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Re: Cooling System Help Please!!

Is there a constant flow of bubbles visible in the expansion reservoir, or only a few once in a while? A (more or less) constant flow of bubbles would point towards a head gasket. When its just a few bubbles once in a while, then it could be remaining air which finds its way to the highest point.
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  #17  
Old 07-13-2016, 11:53 AM
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Re: Cooling System Help Please!!

Some positive news.

My mechanic looked at it today and doesn't believe it is the HG.

We jacked the front of the car up and ran it while filling via the bleed screw until the bubble stopped and I've levelled off the expansion tank and will now monitor it over the next few days.

Fingers crossed!!!!

Regards

Paul.
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  #18  
Old 07-20-2016, 06:09 AM
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Re: Cooling System Help Please!! - UPDATE

Hi All,

It's been a week now since changing the radiator cap and properly bleeding the system.

I've done over 500 miles with two 170 mile continuous running periods and all appears well.

My mechanic did have a joke with me about me 'looking for problems' !!

So far all is well so I think it was a combination of an airlock and a bad cap so I'm a happy camper for now!

Regards

Paul.
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  #19  
Old 07-20-2016, 06:52 AM
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Re: Cooling System Help Please!!

that is great news....
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  #20  
Old 07-22-2016, 04:02 AM
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Re: Cooling System Help Please!!

G'day Chudsy. A compression check is a good idea to see if all cyls are within spec ( ~150psi). These are pretty low cost nowadays. Just use compressed air to clean out the plug recesses after the ignition coils are removed--keep them in order. After the comp test ( hopefully all is spec) use some rubber fuel line on the plugs to 'start' the threading ( they are deeply recessed) before apply the torque wrench.


Here's tutorial that covers it nicely.
Part 2 -How to Test for a Blown Head Gasket (4.7L Chrysler, Dodge, Jeep)


Note: H20 pumps are an easy fix on the 4.7 and worth getting a good one if not sure. On mine, the front timing chain case (behind the pump) and across the front of the block has some corrosion / pitting where the water exits the pump. I've seen images of cases that have corroded through where the H20 pump could not circulate the coolant and some where coolant invaded the engine. Key learning was to always use the correct coolant and never neglect the scheduled changes.
Note: On the H20 pump inspection/replacement, one needs to stabilize the pump pulley to loosen the fan nut. I just fab'd one out of 1"x 1/8' steel strap and measured the distance in the pulley where holes are to receive the pins (2)(made out of 1/4" x 1" bolts and a nut to secure the pins (bolts). Held vertically, rotate the pulley so the pin holes are at ~ 8 o'clock and 10:00 o'clock(front view) and with the pins in the pulley, a large adjustable wrench can defeat the fan nut. Use gloves as a precaution as there is not much room if things slip. A Haynes manual or FSM is a great investment.
Good luck and keep us posted!
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