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Mazda 626 vacuum leak Videos

1994 Mazda MX-3 Vacuum Leak Update

I removed the air intake hose so you can really hear how bad the hissing sound is. I still Dont know where its coming from. I removed all the hoses and plugged ...

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Ok, I think I finally fixed the problem that has been haunting me!!! I decided to buy MAF cleaner and clean the Throttle Body, Mass Airflow Filter and Idle Air Control valve again but then I took all the Vacuum Hoses and Valves off to inspect them one by one and blew air in them, connected valves to a12v Battery to see if they open/close. Bingo!! I found one that had a line blocked from melted goo!! Then I put it in Diagnostic Mode and Adjusted Idle and Timing again and it all works!!
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Hi there, I am dealing with the same problem on my 95' MX-3 . where exactly is this Idle Adjustment Screw? I already cleaned the throttle real good. what do you think should be my next step. Thanks I appreciate your input in dealing with this problem that is being bugging me for quite a long time. thanks
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Update, it wasn't a vacuum leak! That hissing sound is normal and coming from the Idle Adjustment Screw. If I screw it in all the way, the hissing sound disappears. I had to screw with it to adjust the ignition timing because the car failed on smog test on ignition timing and code 16. EGR Control Valve.
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The idle adjustment screw is right on top of the carb. Screw it all the way in, then back out 1.5 turns. Mine was open to much. That hissing sound haunted me for months! I finally got another carb from the junk yard and was able to figure it out and swap the TPS and IAC valves to troubleshoot.

mazda Mpv ruptured pcv hose-vacuum leak

This video was uploaded from an Android phone.

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got it from autozone-just tell them what you want to do-sorry I dont remember part number
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Part number??

found a vacuum leak on a mazda truck

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well the split caused the truck to idle weird. and when I broke it off and made it so it wasn't leaking it would suck the hose flat. I asked my bro if he wanted it fixed and he said not to worry about it. so I just left it. It's probably affecting his gas mileage but he didn't want to put like $10 worth of hose in it. Go figure. I think it's a 2.3L but I'm not certain. it's pretty similar to my 93 mustang 4 cylinder that was a 2.3 with dual spark plugs.
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looks like the same motor thats in my 98 ford ranger i used to own, 2.5l so what was the result of your findings?

Carb 4.0 Vacuum Leak?

Penny is running, but it sounds like I have a vacuum leak around the carb.

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That Eagle is in pretty nice shape!
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+rlrjeep Thanks...sadly it's still sitting behind my house with a 4.0 swapped engine that's not getting oil. :(

Possible vacuum leak

Vacuum Leak Tester | Vacuum Leak Testing

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