several symptoms, no clue
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several symptoms, no clue
it's a 93 mx3 b6me, 5spd, 197,5xx miles. if you let the car idle for a minute before shutting it off, it will smoke like hell the next time it's started cold. it's white smoke, but it's not oil or coolant, it's incomplete combustion. it won't do it if you shut it off right away, but if you sit and idle at all, it will do it. it's like it's idling too rich or something, but it passed emissions just fine. if it was rich, wouldn't it take longer to warm up? it actually warms up pretty quick. also, there is a "surging" under acceleration, like the power comes and goes. it was trying to stall on me last week, and it did stall once or twice, but when I actually shut it off with the key and restarted it, it ran just like always. no stalling since. I don't get it.
- Ryan
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Re: several symptoms, no clue
well, running rich is black smoke.
burning oil is blueish
and coolant/really cold days is white.
So unless its really cold, which I don't think it is anywhere (that you can drive) on the planet right now, I'd say its coolant.
Check your coolant resevoir, see if its brackish/oily, or low.
Also, these cars run rich when cold. Its designed that way, thats why we have thermosensors. The purpose is likely both for ignition and heating purposes, but I'm not a Mazda engineer.
Concerning your problem, have you tried a tune up? filters, plugs, wires, cap and rotor, set ignition timing/idle speed, maybe a good 'ol can of seafoam...
burning oil is blueish
and coolant/really cold days is white.
So unless its really cold, which I don't think it is anywhere (that you can drive) on the planet right now, I'd say its coolant.
Check your coolant resevoir, see if its brackish/oily, or low.
Also, these cars run rich when cold. Its designed that way, thats why we have thermosensors. The purpose is likely both for ignition and heating purposes, but I'm not a Mazda engineer.
Concerning your problem, have you tried a tune up? filters, plugs, wires, cap and rotor, set ignition timing/idle speed, maybe a good 'ol can of seafoam...
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Black '93 BP RS - wrecked, parted, scrapped.
Green GS - Sold.
Black GS - Summer DD/Race car - Fancy KLZE
Red GS - K8-ATX -> MTX-KLDE - Frakencar. Scrapped
White GS - Rusty. Parts. Scrapped
1997 BMW M3 - my summer baby
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Black '93 BP RS - wrecked, parted, scrapped.
Green GS - Sold.
Black GS - Summer DD/Race car - Fancy KLZE
Red GS - K8-ATX -> MTX-KLDE - Frakencar. Scrapped
White GS - Rusty. Parts. Scrapped
1997 BMW M3 - my summer baby
2002 BMW 325Xi - sold
2003 Forester Xti - EJ20K swapped.
Feedback
Re: several symptoms, no clue
Dont get upset your not alone, my car is doing the same thing. Its done this since a week after i bought it. I've changed the spark plugs/wire. Cleaned the TB. Just now seafoamed oil(then changed oil),gas,Intake(boy did alot of smoke come out). Ran fine for the day, next day back to bad idle,surging,CEL on/off and now it dies sometimes...I think im just going to take mine to the shop, so they can find the problem instead of me guessing.
___________________
Black '92 GS [Project De-t Started!] [The spoiled one]
Green '95 1.6 [Daily][The jealous one...SOLD]
White '07 Mazda 3 GT [The pretty one]
[What can you say, I have a fetish for 3's]
Black '92 GS [Project De-t Started!] [The spoiled one]
Green '95 1.6 [Daily][The jealous one...SOLD]
White '07 Mazda 3 GT [The pretty one]
[What can you say, I have a fetish for 3's]
mikeetown wrote: Do what you want to do dude cause in the end, your mx-3 is all about you.
- Ryan
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Re: several symptoms, no clue
MX-3zoom, your issue sounds like a vac leak.
Now with Moderator power!
Black '93 BP RS - wrecked, parted, scrapped.
Green GS - Sold.
Black GS - Summer DD/Race car - Fancy KLZE
Red GS - K8-ATX -> MTX-KLDE - Frakencar. Scrapped
White GS - Rusty. Parts. Scrapped
1997 BMW M3 - my summer baby
2002 BMW 325Xi - sold
2003 Forester Xti - EJ20K swapped.
Feedback
Black '93 BP RS - wrecked, parted, scrapped.
Green GS - Sold.
Black GS - Summer DD/Race car - Fancy KLZE
Red GS - K8-ATX -> MTX-KLDE - Frakencar. Scrapped
White GS - Rusty. Parts. Scrapped
1997 BMW M3 - my summer baby
2002 BMW 325Xi - sold
2003 Forester Xti - EJ20K swapped.
Feedback
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Re: several symptoms, no clue
maybe it's time for a can of seafoam... I'm not losing oil or coolant. you know how a fuel injected engine smells on a cold morning? smells just like that, only a buttload of it.
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Re: several symptoms, no clue
I live in Calgary Alberta, its snowing right now. lolSo unless its really cold, which I don't think it is anywhere (that you can drive) on the planet right now, I'd say its coolant.
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Re: several symptoms, no clue
you know what's funny? about 3 days ago it snowed here (slc,utah), the next day it was 70 degrees.
Re: several symptoms, no clue
Ill look again...unless the last owner put hoses in wrong spot or something. Wanna fix it, starting to tick me off, be cruisen then all the sudden my car is jerkin like its about to die......Miss my Gs never had problems, alomost finished with 'er thou
___________________
Black '92 GS [Project De-t Started!] [The spoiled one]
Green '95 1.6 [Daily][The jealous one...SOLD]
White '07 Mazda 3 GT [The pretty one]
[What can you say, I have a fetish for 3's]
Black '92 GS [Project De-t Started!] [The spoiled one]
Green '95 1.6 [Daily][The jealous one...SOLD]
White '07 Mazda 3 GT [The pretty one]
[What can you say, I have a fetish for 3's]
mikeetown wrote: Do what you want to do dude cause in the end, your mx-3 is all about you.
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Re: several symptoms, no clue
did the seafoam today, seems like it maybe has a little more power, but still has the surging/flat spots, about the same... let me point out that this surging is not at idle, it's under acceleration, most noticeable in 2nd and 3rd gears. it seems to clear up around 3500 or so, but not always. as far as the smoky starts, what about this: weak spark at idle causing incomplete combustion, would that be a possibility, or would that get worse under load?
Re: several symptoms, no clue
Sounds like a bad o2 sensor/exhaust leak pre o2, our o2's control fueling below 4k rpms, after that the ecu takes over, hows the fuel economy?
92' Rs-t b6t/De - RIP
93' Rs-t BPT - Sold
03' WRB wrx Wagon - Current
93' Rs-t BPT - Sold
03' WRB wrx Wagon - Current
- umcamara
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Re: several symptoms, no clue
What makes you say that Open-Loop happens at 4000 RPM's? I don't think it's that simple. Take a look at this thread I'm looking for help with, if you have time:nos92mx3 wrote:Sounds like a bad o2 sensor/exhaust leak pre o2, our o2's control fueling below 4k rpms, after that the ecu takes over, hows the fuel economy?
Click Here
Re: several symptoms, no clue
On my wideband o2 , no matter what load below roughly 4k rpms the afr stays the same vs 4500+ both at part and WOT.
Dosent matter if i go up a steep hill in 4th or second below 4k its the same afr, once over 4k though the afr drops.
Alot of miata guys have problems running aftermarket turbo kits and its why they use an o2 clamp
Dosent matter if i go up a steep hill in 4th or second below 4k its the same afr, once over 4k though the afr drops.
Alot of miata guys have problems running aftermarket turbo kits and its why they use an o2 clamp
92' Rs-t b6t/De - RIP
93' Rs-t BPT - Sold
03' WRB wrx Wagon - Current
93' Rs-t BPT - Sold
03' WRB wrx Wagon - Current
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Re: several symptoms, no clue
I'm getting about 30 mpg, as long as I keep it under about 70 or so (the 3500 mark or so). and I just finished fixing my leaky exhaust, cracked radiator, and leaky valve cover gasket, so it's not an exhaust leak, and I've got a pretty good eye on my coolant and oil.
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Re: several symptoms, no clue
just a bump. anybody think of anything new?
Re: several symptoms, no clue
My mechanic wont be able to get me in for while, Tomorrow is my day off and i would like to tackle the problem...It died going around a corner lol. Found there is no gasket on the exhaust down pipe. I'm due for an oil change and was wondering if there was other things to replace(o2 sen. Gasket, more?) to help with the prolems, ThanksMX-3zoom wrote:Dont get upset your not alone, my car is doing the same thing. Its done this since a week after i bought it. I've changed the spark plugs/wire. Cleaned the TB. Just now seafoamed oil(then changed oil),gas,Intake(boy did alot of smoke come out). Ran fine for the day, next day back to bad idle,surging,CEL on/off and now it dies sometimes...I think im just going to take mine to the shop, so they can find the problem instead of me guessing.
myfirstmazda- did you find a cure?
___________________
Black '92 GS [Project De-t Started!] [The spoiled one]
Green '95 1.6 [Daily][The jealous one...SOLD]
White '07 Mazda 3 GT [The pretty one]
[What can you say, I have a fetish for 3's]
Black '92 GS [Project De-t Started!] [The spoiled one]
Green '95 1.6 [Daily][The jealous one...SOLD]
White '07 Mazda 3 GT [The pretty one]
[What can you say, I have a fetish for 3's]
mikeetown wrote: Do what you want to do dude cause in the end, your mx-3 is all about you.