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Just found this on the net. A bit like a breathaliser for radiators. Don't know where you can get it done though.
"The most effective and accurate diagnostic test to determine if the cylinder head gasket is sealing combustion gasses is to check for the presence of combustion gasses in the engine coolant. This must be done with the engine warm and the radiator cap removed. This can be a bit tricky so be careful when warming the engine with the radiator cap removed or removing the cap when the engine is warm. With the radiator cap off and the engine warm, place a funnel where the radiator cap would normally be. Start the engine and let it run. Watch the coolant as it circulates. It is normal to see the presence of some bubbles in the cooling system, but the presence of lots of bubbles in the cooling system may be a sign of cylinder head gasket failure. Be very careful when running the engine with the radiator cap removed. Hot coolant may be expelled from the radiator unexpectedly.
With the engine running, a tool (pictured) is used to draw fumes from the cooling system through a chemical that checks for the presence of carbon monoxide (CO) in the cooling system. Carbon monoxide will only be present if the head gasket has failed or the cylinder head itself is cracked. The chemical starts off blue in color, but turns green or yellow in the presence of carbon monoxide. This test is known as a “block check."
Another method is to use the gas analyzer that the shop uses to check vehicle emissions. When this machine is used, the presence of hydrocarbon (HC) gasses escaping from the coolant will be measured and if the HC reading is over 50 PPM, then the headgasket is leaking. Always make sure the reading is noted on the repair order whenever this method is used."
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thanks for the info 4bye4 i will do some reading and add this to my tests... your a champion thanks again
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Maybe you could invert an empty coke bottle and observe the coolant through that
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Diesels don't produce carbon monoxide so you will need to make sure you are using the correct apparatus for the diesel. These are available but not as common as the ones described above.
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3 Attachment(s)
Ok so I pulled out the starter motor yesterday to see if it caused the original grinding noise when she first started smoking and I'm not Shaw if this is worn or worn out
Attachment 54819
Attachment 54820
Attachment 54821
Your thoughts please
Also i found the 3 small bolts on the drive face were slightly loose, 1/2 turn to finger tight
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if thats the leading edge on those gears looks like it would be hard to engage
loose bolts its all adding up
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Thanks TD, so starter motor on the shopping list and we'l see what else i can add after the compression test tomorrow
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Cant you just buy that gear???
Plus what does the other gear look like
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Hi all finally got to do a compression test results are:
1) 360
2) 280
3) 265
4) 330
so i think this shows a gasket blowout between 2 & 3 i also have coolant blowing out G-plug 3. so off with the head
Question: how heavy is the head, do i need a engine hoist or can me and a mate lift it out ... also anyone know of a good how-to thread for head removal, i got the Gregorys but some real world experience would be great
