Strange POP, internal backfire?

Hey guys...

So I have an intake on my car, just a curved 3" pipe with a K&N cone.

Even since I did that, randomly, maybe 2-4 times every 6 months, I get a POP.

This is what happens... because my intake sounds soooo good, I tent to rev it a lot. (I have the 5 speed) So when I go into corners, or am sitting at a stop light, I'll give it a quick TAP TAP to maybe 2500RPM or 3k.

Now, it happens so randomly I don't expect it so I can't really pay complete attention.

But it SEEMS it will just POP, it sounds like a backfire inside a cylinder?
Then for a while, maybe a mile, it will not seem to have full power @ low RPM. I'll tap tap it a few times, and POP! It makes me cringe. But then it is back to normal?!

I can't take it to the dealer for two reasons...
1) I can't MAKE it do it, I can not recreate it.
2) I have an intake kit, and they'll say my warranty is void and send me on my way o_O

Please help!

Also, anyone notice when accelerating a slight tugging almost like loss of power / gain power back, over and over about 5-6 times until about 4kRPM? Once I hit the valve timing thing, it takes off like a rocket.

maybe a misfire? pull your plugs, and check and see if they're toast. Check the wires, make sure they're not toast. reconnect everything back up all snug.

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Originally Posted by exodus

maybe a misfire? pull your plugs, and check and see if they're toast. Check the wires, make sure they're not toast. reconnect everything back up all snug.

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All that and Learn to Drive................. 8)

Exodus, thanks but it did it with the stock plugs, and I put in new plugs and tested the wires, everythings fine.

Birdbrain, get a life.
I have not a single ticket in my life.
Tool.

Why is it I have to start out on a website like this and get the biggest tool in the shed commenting dumb s*** on my thread asking for help?

I suggest you stop the unneccesary revving. I have a Harley and did the same thing you are doing. My mechanic told me I needed to stop or I could cause serious damage.

So you have to outweigh cool sounds vs. possible engine damage.

just my 2 cents

Quote:

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Originally Posted by dpawl31

Birdbrain, get a life.
I have not a single ticket in my life.
Tool.

Why is it I have to start out on a website like this and get the biggest tool in the shed commenting dumb s*** on my thread asking for help?

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Yikes guy, take it easy. Didnt you see the smiley emoticon after what he said....hes just messin with ya.

I just don't get it, there has to be something causing it.
It is a 5 speed, it should be able to rev forever without issue.
Plus I exagerated a bit, it is probably no more than 1800RPM.
It should EASILY be able to do that 24/7 w/o issue.

Thanks for the non- BS reply like BirdBrain...

It works fine 99% of the time, just every few months I get a POP...
Just scares me.

I'll get that "puff or pop" through the air cleaner too, just nature of the beast

There's a little trick we do when going through an underpass on the bikes when we have a new rider with us...turn off the ignition, roll the throttle on full, then click the ignition on and BANG!!! Unfortunately, what you are doing is causing a large build-up of fuel in the cylider and it detonates when turning the ignition back on...VERY VERY VERY BAD for the motor, and your balls if the jugs ever let loose or the top end blows off the motor.

Does it trip a CEL?

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I'll get that "puff or pop" through the air cleaner too, just nature of the beast

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That's something I thought it might me. I hope that is it.
It isn't dangerous right?

Ex- whats's a CEL? (sorry...)

Blade- I MAY have over-reacted, it MAY have been sarcasm.
I don't think that smiley indicated sarcasm, even so it was uncalled for.

Thanks for the quick replies, I hope it's just the air intake deal.

Quote:

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Originally Posted by dpawl31

Quote:

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I'll get that "puff or pop" through the air cleaner too, just nature of the beast

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Ex- whats's a CEL? (sorry...)

.

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I'm not Ex but I'll answer anyway! CEL is a Check Engine Light

Hah... was just thinking same thing...

Remember me daniel? Youtube :D

Oh PS, no it doesn't trip CEL.

only thing I can think of would be to check the map sensor and make sure it's plugged up right.

I would think it has to be something to do with the ignition system or injection system.

Crap... I forgot when I tried to install a remote start (failed because I couldn't get the tach sense wire to work... god...)

I trimmed some casing back on a few wires in the EMC under the hood, and never covered them with electrical tape, also lost the cover for one side. But would that cause it so randomly? Could the slight loss of power/tugging deal be related, and have something to do with those wires?

What is the best way to test that sort of thing?

fix it and see if the problem persists.

Quote:

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Originally Posted by dpawl31

Hah... was just thinking same thing...

Remember me daniel? Youtube :D

Oh PS, no it doesn't trip CEL.

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Oh course, you have the same name! And I dont get many messages on youtube anyway

piss piss moan moan bitch bitch, thats all i hear on this forum, lets get back to the basics...

I have seen several people driving a stick hard make a popping sound. I even sometimes made it when I first learned to drive a stick. Just because you're popping doesn't mean you dont know have to drive a stick, could be you're just making a mistake here and there. Or it could be something else completely. But since you're not setting off a CEL it does have more of a lean towards the poor driving arguement.

But you two really need to stop this banter or take it to PM. We dont need all this hostility or else this thread may get closed real soon.

read the rules.

what milege do you have on your car?

mine is 2004 5 speed at 17000KM, and i rev to 6000 while in gear, and the is NO POP

with intake and exhaust on my matrix id get a popping every now and then...but from the exhaust...

what happens in mine, and im not sure if the aveo does it too, is that with the intake and exhaust, the ecu starts running a little rich sensing the increased cooler air coming in.....

so what happens is that not all of the gas is burned in the combustion chamber and once it hits the hot exhaust header or exhaust pipe it explodes/pops....

could this be happening to you?

when you stab the gas hard youre dumping a bunch of fuel at the engine, not all is combusted and it seems likely that the excess is blowing up in your exhaust header...

Yay for productive replies!

I have about 42,000 miles, so roughly 68,000km.


Barber- that's a great guess. That might just be it?
But you did say "stab" the gas. It happens under 10% throttle, but I think it is still a possiblity.

Thanks for the positive replies, maybe I can get a mechanic to agree :D

EDIT PS- this is a new account, most likely my other one is being deleted because of exodus, I am sorry we argued but 1) it wasn't cool to be told I can't drive 2) Explanation of deleted posts would have been nice.

Exodus- I am sorry. Please do not "ban" this account.
I really would love the help you guys have hear. Please also disregard my PM, as it was 4:50am and I was getting ready for work, after only 3 hours sleep. I am sorry - this is a place for help. I will keep my temper out of sight. I just hate being harrassed. (not by you)
If you agree- maybe you can just delete this whole thread and I will restart it. I tried appologizing to birdbrain, but apparently he wants no say in that, so I would think its safe to assume he'll stay out of the thread anyway.

""Also, anyone notice when accelerating a slight tugging almost like loss of power / gain power back, over and over about 5-6 times until about 4kRPM? Once I hit the valve timing thing, it takes off like a rocket.""


My '06 had a little stumble like this when new...it dosent do it anymore (14k mi)