Back Flush Not Working
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Junior User
Joined: May 2009
Posts: 56
Likes: 0
OK, so you bought a "broken truck".
Before you do any more to it, get a pressure gauge for the coolant bottle and take it out and drive it. Report findings.
If you are not building too much pressure, your heads are fine and should be left alone.
Then finish your flush and buy an OEM oil cooler $290 and thw STC kit $55. Depending on how ambitious you are, it can be completed in 1 day. Intake manifold gaskets are reusable.
At this time you can decide if you want to delete the EGR cooler as well.
If you want this truck to last, maintenance is key. Make sure to only use OEM filters and you should be good to go.
Before you do any more to it, get a pressure gauge for the coolant bottle and take it out and drive it. Report findings.
If you are not building too much pressure, your heads are fine and should be left alone.
Then finish your flush and buy an OEM oil cooler $290 and thw STC kit $55. Depending on how ambitious you are, it can be completed in 1 day. Intake manifold gaskets are reusable.
At this time you can decide if you want to delete the EGR cooler as well.
If you want this truck to last, maintenance is key. Make sure to only use OEM filters and you should be good to go.
Cargo Master
Joined: Jun 2007
Posts: 2,723
Likes: 5
From: Roseburg, OR
You can tee in to one of the lines for the degas or drill an old degas cap and put a fitting it.
The system will take 7 gallons if you pull the block drains. Make sure you use the correct mixture of 3.5 gallons ELC to 3.5 gallons distilled water.
I personally would get the level to the minimum mark for testing.
The system will take 7 gallons if you pull the block drains. Make sure you use the correct mixture of 3.5 gallons ELC to 3.5 gallons distilled water.
I personally would get the level to the minimum mark for testing.
Thread Starter
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Junior User
Joined: May 2009
Posts: 56
Likes: 0
You can tee in to one of the lines for the degas or drill an old degas cap and put a fitting it.
The system will take 7 gallons if you pull the block drains. Make sure you use the correct mixture of 3.5 gallons ELC to 3.5 gallons distilled water.
I personally would get the level to the minimum mark for testing.
The system will take 7 gallons if you pull the block drains. Make sure you use the correct mixture of 3.5 gallons ELC to 3.5 gallons distilled water.
I personally would get the level to the minimum mark for testing.
New old trucks are like a divorce not a honeymoon. I guess I'll get it figured out one way or the other. Thanks for all the help.
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Junior User
Joined: May 2009
Posts: 56
Likes: 0
No I did replace the ECT Sensor but did not swap them to verify. Good idea. Will try that soon enough. Supposedly the dealer I got truck from changed the oil. I going to change it after can figure out what is going on. Trying to not throw good money after bad.
Fleet Mechanic
Joined: Jul 2013
Posts: 1,330
Likes: 65
From: 'Pitlock, Maine
Hang in there Pal, I can't help you much with the problem you have because I'm still a newb myself, but there is a ton of knowledge on this site and the people that are here are willing to walk you through about anything you'll run into with these trucks/engines. just have some patience and sooner rather than later you'll get your questions answered.....usually by someone that's 'been there'
Thread Starter
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Junior User
Joined: May 2009
Posts: 56
Likes: 0
Went ahead with Coolant Filter and adjusted coolant level to min mark. Also changed oil. I have to be out for a while and going to drive truck. Hopefully later today I can do pressure test from cap and see what's what.
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