bogg down - Club3G Forum : Mitsubishi Eclipse 3G Forums

countryrunner · 08/14/2012, 02:07 PM

hey guys as some of you know i just got a 04 mazda 6s 5spd and i changed out the spark plugs and the car has 150k on it now. what is happening is that when i am in like in any gear except 1st when i hit the throttle to full the rpms will shoot up then go down like 200 rpm then go back up then if im still in the same gear it will happen again. here is a vid i was in 5th gear when i made the vid:

now the car is not popping up any codes can somebody help me?

soundman98 · 08/14/2012, 05:28 PM

what plugs were in it and what did you put in?

countryrunner · 08/14/2012, 05:51 PM

autolite is what i pulled out and ngk IX is what i put in it. but it didn't start doing this until like a month after i changed the plugs. and the weird thing is that the ngk plugs where pre-gapped for .41 and the manual says gap for .51

soundman98 · 08/14/2012, 08:07 PM

i don't know how mazda's are with that, but i know the chrysler/mitsu v6 doesn't like many plugs-- the best ones are stock for those motors..

is it easy to pull one of the plugs and check the coloration?

countryrunner · 08/14/2012, 09:13 PM

well thanks for the help soundman so far. i will check the condition of the plugs this weekend and i will double check the gap size. but here is another piece of info:

i notice for awhile that every time i took off from a stop on low rpm i heard a rattle from the exhaust. i took it to the exhaust shop and he tapped on the passenger side downstream cat and it sounded like there was a bunch of stuff in the cat. since this car has a dual exhaust it has two pre-cats and two downstream cats. so the guy at the exhaust shop cut a hole before the downstream cats (both of them) it helped out the bogg down just a little but did not really fix it. thats why in the vid the exhaust was so loud. took the car back to the shop and he said that probably that the pre-cats went bad and shoot crap down the pipe to the downstream cats. sorry for the long explanation just wanted to cover all the details. so this friday im going to get the holes fixed and take it up to the shop to see what they find and im going to check the plugs.

Danielv2008 · 08/15/2012, 12:16 AM

Easy, clutch is on it's last legs. You have a manual transmission, the RPM are supposed to stay linear with the speed..

countryrunner · 08/15/2012, 11:31 AM

well i made another vid showing speed and rpm:

edit: Now it does this only under extreme loads it dies not do it under normal loads like daily driving.

Danielv2008 · 08/15/2012, 06:53 PM

Stop killing the clutch even more! Do that a few more times and you'll find yourself stranded on the side of the road. It needs a clutch replacement asap.

countryrunner · 08/15/2012, 09:15 PM

Well I don't do that all the time its my daily driver not a racer I first start noticing doing this when I was getting on the interested. Well its going in the shop Friday to confirm it so how much does a clutch job run?

edit: and i was looking at a exedy oem clutch kit and i was wondering if anybody has used them before

BlackoutGT65 · 08/16/2012, 11:13 AM

Quote:

Originally Posted by countryrunner

Well I don't do that all the time its my daily driver not a racer I first start noticing doing this when I was getting on the interested. Well its going in the shop Friday to confirm it so how much does a clutch job run?

edit: and i was looking at a exedy oem clutch kit and i was wondering if anybody has used them before

I have an exedy its been good to me

A clutch job can run you anywhere from 500-900 depending on if you provide parts and who does it.

Danielv2008 · 08/16/2012, 12:51 PM

Not cheap, at least $600. Exedy is probably what you will pull out from there. It might be the exact same as the OEM. I've had that before

Oh also make sure you replace the throw out bearing and the pilot bearing. Maybe the rear main seal on the engine too

kabob · 08/16/2012, 04:49 PM

I doubt it's the clutch. Clutches don't slip-grip-slip-grip, etc. When they're worn, they'll slip before engaging at higher speeds, especially in 3rd or 4th gear but will stay clamped to the flywheel once they engage. Unless you have a torquey vehicle which a Mazda6 is not.

countryrunner · 08/17/2012, 07:58 AM

Well I had a friend at work say maybe the fuel filter but my car does not have one it has a strainer that on the fuel pump

Danielv2008 · 08/17/2012, 11:34 AM

Quote:

Originally Posted by kabob

I doubt it's the clutch. Clutches don't slip-grip-slip-grip, etc. When they're worn, they'll slip before engaging at higher speeds, especially in 3rd or 4th gear but will stay clamped to the flywheel once they engage. Unless you have a torque vehicle which a Mazda6 is not.

What else would cause the RPMs to fluctuate on a manual transmission? It can only be the clutch

countryrunner · 08/17/2012, 01:35 PM

Well its at the shop right now and they still trying to figure it out

kabob · 08/17/2012, 06:28 PM

Quote:

Originally Posted by Danielv2008

What else would cause the RPMs to fluctuate on a manual transmission? It can only be the clutch

Any of a dozen things from a vacuum leak to clogged injectors. Especially when OP says that it suddenly happened after a spark plug change. Clutches don't suddenly slip from out of nowhere.

Personally, I think OP should backtrace his work and make sure everything is connected properly and the plugs gapped correctly.

countryrunner · 08/18/2012, 08:28 AM

Well the shop tested everything and said its the clutch going out

Danielv2008 · 08/18/2012, 11:06 PM

Quote:

Originally Posted by kabob

Any of a dozen things from a vacuum leak to clogged injectors. Especially when OP says that it suddenly happened after a spark plug change. Clutches don't suddenly slip from out of nowhere.

Personally, I think OP should backtrace his work and make sure everything is connected properly and the plugs gapped correctly.

It's amanual transmission. If it's not being shifted out of gear, the engine cannot spin faster or slower in gear, it's physically connected to the tranny (well not so much anymore). Doesn't matter what's wrong with the anything else. It's simple mechanics.

Why after the plugs? The new plugs improved combustion and gave more power therefore slip. And also after people fix their cars they usually give it a nice test drive to see the difference.

countryrunner · 08/19/2012, 09:30 PM

Well guys I'm about to order my new clutch but is there any else I might want to replace since in doing the work myself? Maybe a slave cylinder or something

Danielv2008 · 08/20/2012, 01:35 AM

Rear main seal and axle seals would be nice to do. Also replace the throw out bearing and the pilot bearing.

08/14/2012, 02:07 PM	#1 (permalink)
countryrunner Senior Member Join Date: Aug 2008 Location: prairie home Vehicle: 03 gts Posts: 592	bogg down hey guys as some of you know i just got a 04 mazda 6s 5spd and i changed out the spark plugs and the car has 150k on it now. what is happening is that when i am in like in any gear except 1st when i hit the throttle to full the rpms will shoot up then go down like 200 rpm then go back up then if im still in the same gear it will happen again. here is a vid i was in 5th gear when i made the vid: now the car is not popping up any codes can somebody help me?

08/14/2012, 05:28 PM	#2 (permalink)
soundman98 ... Join Date: Jun 2008 Location: Northern IL/IN Vehicle: '01 Spyder GT Posts: 2,435	what plugs were in it and what did you put in? __________________ The never-ending project, my '01 Spyder GT more projects then time! when 'bright' reverse lights don't cut it exterior led upgrades--75% (led tails, turns, third brake, plate light, reverse light) interior led upgrades--10% (gauges and hvac next, dome light completed) whats next? ford raptor(for the lightbar!!)..

08/14/2012, 05:51 PM	#3 (permalink)
countryrunner Senior Member Join Date: Aug 2008 Location: prairie home Vehicle: 03 gts Posts: 592	autolite is what i pulled out and ngk IX is what i put in it. but it didn't start doing this until like a month after i changed the plugs. and the weird thing is that the ngk plugs where pre-gapped for .41 and the manual says gap for .51 Last edited by countryrunner; 08/14/2012 at 06:00 PM.

08/14/2012, 08:07 PM	#4 (permalink)
soundman98 ... Join Date: Jun 2008 Location: Northern IL/IN Vehicle: '01 Spyder GT Posts: 2,435	i don't know how mazda's are with that, but i know the chrysler/mitsu v6 doesn't like many plugs-- the best ones are stock for those motors.. is it easy to pull one of the plugs and check the coloration? __________________ The never-ending project, my '01 Spyder GT more projects then time! when 'bright' reverse lights don't cut it exterior led upgrades--75% (led tails, turns, third brake, plate light, reverse light) interior led upgrades--10% (gauges and hvac next, dome light completed) whats next? ford raptor(for the lightbar!!)..

08/15/2012, 11:31 AM	#7 (permalink)
countryrunner Senior Member Join Date: Aug 2008 Location: prairie home Vehicle: 03 gts Posts: 592	well i made another vid showing speed and rpm: edit: Now it does this only under extreme loads it dies not do it under normal loads like daily driving. Last edited by countryrunner; 08/15/2012 at 03:10 PM.

08/14/2012, 09:13 PM	#5 (permalink)
countryrunner Senior Member Join Date: Aug 2008 Location: prairie home Vehicle: 03 gts Posts: 592	well thanks for the help soundman so far. i will check the condition of the plugs this weekend and i will double check the gap size. but here is another piece of info: i notice for awhile that every time i took off from a stop on low rpm i heard a rattle from the exhaust. i took it to the exhaust shop and he tapped on the passenger side downstream cat and it sounded like there was a bunch of stuff in the cat. since this car has a dual exhaust it has two pre-cats and two downstream cats. so the guy at the exhaust shop cut a hole before the downstream cats (both of them) it helped out the bogg down just a little but did not really fix it. thats why in the vid the exhaust was so loud. took the car back to the shop and he said that probably that the pre-cats went bad and shoot crap down the pipe to the downstream cats. sorry for the long explanation just wanted to cover all the details. so this friday im going to get the holes fixed and take it up to the shop to see what they find and im going to check the plugs.

08/15/2012, 12:16 AM	#6 (permalink)
Danielv2008 Premium Member Join Date: Oct 2008 Location: Spokane WA Vehicle: 04 STI Posts: 1,632	Easy, clutch is on it's last legs. You have a manual transmission, the RPM are supposed to stay linear with the speed..

08/15/2012, 06:53 PM	#8 (permalink)
Danielv2008 Premium Member Join Date: Oct 2008 Location: Spokane WA Vehicle: 04 STI Posts: 1,632	Stop killing the clutch even more! Do that a few more times and you'll find yourself stranded on the side of the road. It needs a clutch replacement asap.

08/15/2012, 09:15 PM	#9 (permalink)
countryrunner Senior Member Join Date: Aug 2008 Location: prairie home Vehicle: 03 gts Posts: 592	Well I don't do that all the time its my daily driver not a racer I first start noticing doing this when I was getting on the interested. Well its going in the shop Friday to confirm it so how much does a clutch job run? edit: and i was looking at a exedy oem clutch kit and i was wondering if anybody has used them before Last edited by countryrunner; 08/16/2012 at 03:06 AM.

08/16/2012, 12:51 PM	#11 (permalink)
Danielv2008 Premium Member Join Date: Oct 2008 Location: Spokane WA Vehicle: 04 STI Posts: 1,632	Not cheap, at least $600. Exedy is probably what you will pull out from there. It might be the exact same as the OEM. I've had that before Oh also make sure you replace the throw out bearing and the pilot bearing. Maybe the rear main seal on the engine too

08/16/2012, 04:49 PM	#12 (permalink)
kabob More guns than sense Join Date: Jun 2001 Location: Dallas Vehicle: 2011 V-Dub GTI Posts: 37,940	I doubt it's the clutch. Clutches don't slip-grip-slip-grip, etc. When they're worn, they'll slip before engaging at higher speeds, especially in 3rd or 4th gear but will stay clamped to the flywheel once they engage. Unless you have a torquey vehicle which a Mazda6 is not.

08/17/2012, 07:58 AM	#13 (permalink)
countryrunner Senior Member Join Date: Aug 2008 Location: prairie home Vehicle: 03 gts Posts: 592	Well I had a friend at work say maybe the fuel filter but my car does not have one it has a strainer that on the fuel pump

08/17/2012, 01:35 PM	#15 (permalink)
countryrunner Senior Member Join Date: Aug 2008 Location: prairie home Vehicle: 03 gts Posts: 592	Well its at the shop right now and they still trying to figure it out

08/18/2012, 08:28 AM	#17 (permalink)
countryrunner Senior Member Join Date: Aug 2008 Location: prairie home Vehicle: 03 gts Posts: 592	Well the shop tested everything and said its the clutch going out

08/19/2012, 09:30 PM	#19 (permalink)
countryrunner Senior Member Join Date: Aug 2008 Location: prairie home Vehicle: 03 gts Posts: 592	Well guys I'm about to order my new clutch but is there any else I might want to replace since in doing the work myself? Maybe a slave cylinder or something

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08/20/2012, 01:35 AM	#20 (permalink)
Danielv2008 Premium Member Join Date: Oct 2008 Location: Spokane WA Vehicle: 04 STI Posts: 1,632	Rear main seal and axle seals would be nice to do. Also replace the throw out bearing and the pilot bearing.