Simon2015

Thanks aucky! In my case it is a little different because it mostly overheats when I am at LOW rpm driving up hill. When I rev it going up hill it happens less. It seem to happen when the engine is really strained. I bet it is much harder for it to go up at low rpm. But, I finally did the sniff test and there is no sign of any leak! I tested it on parking and it was good and a couple of minutes after overheating and it was also good. The problem is that I can't do the sniff test right at the moment that the engine is hot (the moment I suppose the hg is leaking) because the coolant is at the top of the header tank and I need it to be a few inches below to preform the test. What do you guys think of it?

Hi guys, I have another question. Last time the engine overheated I checked the radiator hoses. The upper hose was really hot but the lower was COLD! Is it normal?

Thanks man, when the coolant overflowed today it looked usual, it was hot but there was no foam or bubbles. If I keep driving this way, can I damage something other then the head gasket ?(that I am going to replace anyway I think)

Hi guys, While I'm waiting for the sniff kit from ebay I have some more infortmation to tell you. I checked for residues in the header tank and in the radiator cap. The radiator was pretty clean but the header tank had some sort of mud on the walls yet it didn't really felt greasy or oily, just mud. I tried to run the engine for 10 minutes at low rpm (0.5) then 5 minutes on 2 rpm then 5 minutes at 3 rpm and finally another couple of minutes at 4 rpm (was pretty noisy) and nothing happened. No blinking light and no movement of the coolant level in the header tank. But earlier this day I drove up a steep hill for some time then the temp' light began to blink so I stopped and checked the coolant level and it was over flowing. I don't get it. What happens when I go up hill that doesn't happen when I'm just revving the engine. Maybe I didn't rev it for enough time?

Thanks for the explanation Rik! I checked for residues in the header tank and in the radiator cap. The radiator was pretty clean but the header tank had some sort of mud on the walls yet it didn't really felt greasy or oily, just mud. I tried to run the engine for 10 minutes at low rpm (0.5) then 5 minutes on 2 rpm then 5 minutes at 3 rpm and finally another couple of minutes at 4 rpm (was pretty noisy) and nothing happened. No blinking light and no movement of the coolant level in the header tank. But earlier this day I drove up a steep hill for some time then the temp' light began to blink so I stopped and checked the coolant level and it was over flowing. I don't get it. What happens when I go up hill that doesn't happen when I'm just revving the engine. Maybe I didn't rev it for enough time?

Yes

I don't think it is the sensor because it is really losing water. I have to add coolant every now and then...

Mine looks good from the outside but i never really checked it. Yet I know the coolant is flowing.

But still, can it be the water pump?

Thanks for the help! It is a bit more expensive than in the video but I think it is worth it :) :)

Thanks man! But, what is a sniff test?

Hi everyone, I have a 2008 b3 hatcheck that overheats. The coolant temperature warning light starts to flicker when I go up hill. I also noticed that if I drive at HIGH rpm it happens LESS. I've replaced the radiator and the thermostat and it didn't help. I did a head gasket pressure test and no leak was found. The mechanic at the garage said that it might be the head gasket although the test was fine. He says that it might be leaking only when the engine is working really hard and that is why he could not detect it in the test. Replacing the headgasket costs lots of money. I think that since the engine overheats less when I drive on high rpm, it could be the water pump (broken wings)? Thank you guys.

Hi everyone, I have a 2008 b3 hatcheck that overheats. The coolant temperature warning light starts to flicker when I go up hill. I also noticed that if I drive at HIGH rpm it happens LESS. I've replaced the radiator and the thermostat and it didn't help. I did a head gasket pressure test and no leak was found. The mechanic at the garage said that it might be the head gasket although the test was fine. He says that it might be leaking only when the engine is working really hard and that is why he could not detect it in the test. Replacing the headgasket costs lots of money. I think that since the engine overheats less when I drive on high rpm, it could be the water pump (broken wings)? Thank you guys.