radiator chemical tester

[Stej]

hi i am having continuous air blocks in my cooling system i got one of those chemical testers that u put on the refilling cap on the radiator and it is coming up with reading c02 are these very accurate has anyone else used one b4?

also any reasons to why i might be getting air blocks

cheers

[Javal]

Improper bleeding or gunk through out the cooling system.

Motor / car?

[Stej]

ae86/ 4agze

[Dish]

If it's reading C02, your headgasket is ratshit. They are pretty accurate, especially in your case, pretty hard to pull c02 from your cooling system if your headgasket wasn't rooted.

If you're getting air blocks, completely drain the cooling system, pull off the bottom hose to your block and spray inside it with the hose to get all the shit out. Put all hoses back on, fill with coolant and water, leave rad cap off and run it for 10-15mins, just keep an eye on the level in your rad.

Once the thermostat opens most of the air will bleed out. Try banging the rad, bottom and top hose and your motor with your hand, should aid in getting more air out.

[Stej]

if gasket is rooted shouldn't there be oil in the water?

[Javal]

Some, but you'll be more likely to get air in the system first though. As evident by small bubbles constantly forming in the coolant.

Take the radiator cap off, start her up, let it warm for a while then take a look.

[Stej]

hi i just did a compression test on all cylinders and they are coming up with cyl 1- 190
cyl 2-195 cyl 3- 200 and cyl 4- 190 if there was leaking c02 wouldnt the cylinders read much lower? and i flushed the whole cooling system and the bubbles dont seem to be appearing
cheers

[dustyae86]

get your car warm get a few cold long screwdrivers pull your plugs out and put the scredrivers down your plug holes, pull them out and if there is condensation build up on them thats what number is leaking

[Dish]

So your talking about putting a cold object into a hot environment and expecting to find a leak?

What happens when it's a stinking hot day and you take a cold can out of the fridge and leave it, it starts to sweat. So by your method, every one of the screwdrivers will have condensation on it.

I'm not trying to say your wrong dusty, but it may work in theory, but not practicly. Hell, give it a go and see what you come up with.

[Cerby86]

No the condensation will only happen when there is moisture in the air! I wouldn't think there would be much moisture in a working temperature cylinder!