Good morning friends. I have a problem with my Blazer 4.3. I heard a burst and from there on there is a loud suction noise, it pops and tends to go out. Can you help me? thank you very much

 

I can't hear the noise in your video, but from the description, it sounds like you might have a vacuum leak. You can use a short (maybe 3 feet) length of vacuum hose as a "stethoscope" by holding one end in your ear and using the other end to "sniff" around all the intake gaskets, hoses, etc.

 

In fact, I was starting from a stop and I heard an explosion. From there the problems started. The engine noise is not heard well in the video because the noise of the air that seems to enter somewhere that is not the filter is very loud. In speed the car is fine. At the very least he tries to go out and sob. I have to look for a scheme of the vacuum system and investigate. Thank you for your answer.

 

Sounds like it backfired for some reason, and blew off a vacuum or air intake hose. If it's that loud, it should be pretty easy to find by listening under the hood with the engine running.

 

Yes, thanks for your advice. I will try to look for damage to a pipe or gasket.