Can this be used to diagnose an exhaust leak?

While the tool will detect exhaust gases (fluid turns from blue to yellow while squeezing the bulb), it probably wouldn't be able to pinpoint exactly where the leak is coming from. But, it may be useful in ruling out an underhood exhaust leak if you're trying to determine whether or not a particular sound (like ticking) is caused by an exhaust leak or some other mechanical problem.

How do i clean the the tube after use. Does any tester fluid leak into coolent while testing?

You can pop the top cap off and rinse it with water (distilled water if preferred if you have it handy). Tester fluid won't leak down into the coolant as there is a one-way valve in the cone end. Even if test fluid does somehow get into the coolant, there will be no adverse effects.

Can it be use for diesel fuel engine?

Yes, it works on diesel engines. A positive test might show a greenish-yellow color to the fluid rather than the full transition to yellow that you'd see when testing a gasoline engine with a combustion leak.

Does the engine have to be running to work or can we turn the engine over and over to test. will not start, we want to be certain of HG before scrap

I understand your concern. The block Tester detects combustion gases in the coolant system. It will not work if there is no combustion. I would say, if it is igniting the fuel in all cylinders while cranking, but will not remain running it may bleed enough combustion carbons into the coolant system. However, I honestly do not think it will work unless it is running. This block tester is only for head gasket combustion carbon leaks into the coolant system. It is not for head gasket leaks that result in water leaving through the exhaust system. I hope this helps.

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Reviews

J**T

Changes color as described

Use to check for head gasket leaks, or the presence of hydrocarbons in radiator fluid reservoirs. I performed the test and compared to holding the fluid next to my exhaust. Changes to yellow pretty quickly!

20.10.2024

W**N

Good test kit

This test kit worked out great for testing combustible gases getting into the cooling system. Not very expensive and easy to use.

12.08.2024

E**A

De las mejores pruebas de hidrocarburos

A sido magnifico poder contar con esta prueba , ya que nos a evitado tener que quitar la cabeza , y hacer un gasto en vano para nuestro cliente , recomendado

22.11.2022

أ**

السائل لا يؤدي الوظيفة

المنتج أدواته ممتازه ولكن السائل غير فعّال ولا يؤدي الوظيفة المطلوبة و من الممكن أن السائل منتهي الصلاحية.

24.08.2024

F**

Werkt prima

The media could not be loaded.

20.08.2024

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Brand	Block Tester
Power Source	Battery Powered
Item Weight	1 Pounds
Item dimensions L x W x H	25.4 x 7.6 x 12.7 Centimeters
UPC	851989000013
Manufacturer	Block Tester
Product Dimensions	25.4 x 7.62 x 12.7 cm; 453.59 g
Item model number	BT-500
Manufacturer Part Number	BT-500
Assembly Required	No
Country of Origin	USA
Item Weight	454 g

Block Tester BT-500 Combustion Leak Test Kit - Made in USA

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