Blue dye

swinky · Mar 31, 2014

So ford has a blue dye to detect for carbon dioxide which would mean head gasket leak. I went to the dealership and according to the test my gaskets are fine. The tech swears it works and has never given him a bad reading. Anybody have experience with this stuff.

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HOOV3R · Mar 31, 2014

Go to Napa and get a combustion gas tester. Like $40 and the same thing. It will turn green if there is combustion.

swinky · Mar 31, 2014

It will detect it even if the gaskets only leak under wot?

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Zmann · Mar 31, 2014

the psi gauge seems to be more accurate

the dye seems to misdiagnose on the 6oh for some reason

swinky · Mar 31, 2014

sootie said:
it will detect it if there is combustion in the coolant. it doesnt know if it gets there at idle or WOT.

but if you dont make it puke, likely your test wont be accurate.

Zmann said:
the psi gauge seems to be more accurate

the dye seems to misdiagnose on the 6oh for some reason

I'm giving up on thinking it's not gaskets. There's like 20+ psi in the cooling system wot. He had me power brake it in the parking lot but that doesn't normally make my gauge go up.

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swinky · Mar 31, 2014

Napa kit didn't pick anything up either. Put it on right after flogging it. Is there anyway intake/boost air is getting through the egr? I have the factory cooler welded.

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HOOV3R · Mar 31, 2014

The dye isn't a guaranteed test. It works on some engines, but doesn't on others.

Atsah · Mar 31, 2014

The dye did not work on my 03 truck..

swinky · Mar 31, 2014

But **** I've been flogging it for a month with 190s and this issue. You would think you'd be able to smell it or at least see some soot in the coolant.

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swinky · Mar 31, 2014

Atsah said:
The dye did not work on my 03 truck..

Gayyyy

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Cknox121 · Mar 31, 2014

Hmmm this has me wondering... I took mine to dealer, made it puke before. He did the blue die test came back negative. Ran IDS on it and everything came back okay.

Still need to try coolant pressure test.

According to powerstrokehelp, that's a sure fire way to know of gaskets are blown or not.

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swinky · Mar 31, 2014

Cknox121 said:
Hmmm this has me wondering... I took mine to dealer, made it puke before. He did the blue die test came back negative. Ran IDS on it and everything came back okay.

Still need to try coolant pressure test.

According to powerstrokehelp, that's a sure fire way to know of gaskets are blown or not.

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Well I'm getting like 20 psi in mine and it still passed three different blue dye tests. Been running it like this for a month so the coolant should have a good trace by now.

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HOOV3R · Apr 1, 2014

swinky said:
Well I'm getting like 20 psi in mine and it still passed three different blue dye tests. Been running it like this for a month so the coolant should have a good trace by now.

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The combustion tester doesn't actually pull anything out of the coolant, it actually uses the small area of gases on top of the coolant in the degas bottle.

swinky · Apr 1, 2014

Right but I've been running this coolant for a month with potentially blown gaskets. You would think it would have enough of a trace.

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HOOV3R · Apr 1, 2014

You would think it would, but it doesn't always work.

swinky · Apr 1, 2014

I'm going to do a test today and strap the tester down tight on the degas and go drive the **** out of it.

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fordfreak4life · Apr 1, 2014

You need to make sure the thermostat is opened up when you do this.

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swinky · Apr 1, 2014

fordfreak4life said:
You need to make sure the thermostat is opened up when you do this.

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Why? If it's getting pressure in the bottle the air and coolant should have combustion gas in them.

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silverbullet4x4 · Apr 1, 2014

Maybe I missed this but did you try the pressure line T'ed into the degas bottle to a gauge inside of the truck? From what I have heard that is a pretty good indicator.

swinky · Apr 1, 2014

silverbullet4x4 said:
Maybe I missed this but did you try the pressure line T'ed into the degas bottle to a gauge inside of the truck? From what I have heard that is a pretty good indicator.

Yeah it's getting pressurized big time.

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