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2000 Mazda 626 broken intake boot?


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HW1000
New User

Dec 20, 2017, 7:56 PM

Post #1 of 3 (241 views)
2000 Mazda 626 broken intake boot? Sign In

I have a 2000 Mazda 626 with a rip in what I think is the air intake boot. It is before the air filter but I am wondering if this would cause any problems. My car seems to have a weird RPM dip(very slight no more than 50rpm) at idle which occurs about every 15 seconds and I can hear the engine rumble and vibrate when it happens, and then it goes back to normal after a second. I'm thinking I need to replace the air filter anyways but do you guys think it's worth replacing this rubber boot to avoid premature issues, or should I just tape it? below are a couple of pictures that I found online of the same thing...Its dark outside right now so I didn't want to go take a picture




(This post was edited by Hammer Time on Dec 21, 2017, 3:13 AM)


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Dec 20, 2017, 9:04 PM

Post #2 of 3 (219 views)
Re: 2000 Mazda 626 broken intake boot? Sign In

Two reasons to replace that intake duct.

1) you are allowing dirty air to get into the engine. Since you have a big rip in the intake ducting the air is not getting filtered by the air filter. This can cause major engine damage.

2) the MAF sensor is before the rip. The sensor is not measuring the correct air flow because the air is able to go around it. This will cause the computer to miscalculate the mass of air entering the engine. It will cause driveability problems.





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Hammer Time
Ultimate Carjunky / Moderator
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Dec 21, 2017, 3:15 AM

Post #3 of 3 (184 views)
Re: 2000 Mazda 626 broken intake boot? Sign In

I deleted one of your pictures as it was way too large and making the thread unreadable. Please reduce the size if you decide to repost it.



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(This post was edited by Hammer Time on Dec 21, 2017, 3:15 AM)






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