Questions tagged [exhaust]
Questions about Exhaust systems, Catalytic Converters and Headers/Manifolds
53
questions with no upvoted or accepted answers
4
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0answers
31 views
Mercedes veto Exhaust
Just got a new exhaust fitted, the part that goes from the front wheel area all the way to the back. And NOW there is a smell of exhaust fumes in the veacle, that seams to be coming from the vents. ...
3
votes
0answers
33 views
2000 Camaro headers/Borla
Just bought 2000 Camaro stock and looking to add headers and Borla exhaust. Thinking BBK long tube headers and a Borla exhaust.
Has anyone done that?
Any recommendations?
Any other suggestions ...
3
votes
0answers
150 views
Decreased MPG, clicking sound when pressing accelerator
Over the past week, the MPG on my car has gone down significantly, about 3-4 MPG. My driving habits have not changed.
In the meantime, there is a distinct "pneumatic" clicking sound whenever I press ...
3
votes
0answers
451 views
Oddball Cat and Exhaust Manifold 04 Nissan Xterra
I recently got the p0420 code and narrowed the issue down to needing a new cat. Thought i'd be smart and went to Walker identify the exhaust for a basic '04 Nissan Xterra XE, 4WD, 3.3L. Found the ...
2
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0answers
93 views
Are my cats bad? — secondary O2 sensor voltage
I have a 2002 BMW M3, and I've been trying to track down a poor fuel economy issue for quite some time now. My long term fuel trims are high (+7%-10%), and when I had the car on the dyno a couple ...
2
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0answers
132 views
2001 Camry P1135 Cause
Sorry in advance for the long post.
My check engine light in my 2001 Camry 4cyl recently came on with code P1135. Google shows that this is usually a faulty sensor. However, I noticed on some posts ...
2
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0answers
44 views
California CARB converter list by the CA Air Resource Board is no longer available
The only CARB listed converters by California is AP Exhaust 749233 Direct Fit and 740566 single replacement are no longer available. I called AP Exhaust and they are closed down and not sure if they ...
2
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0answers
30 views
97 Yukon 5.7 Backfired with smoke inside the car, now idles really badly
I have 1997 GMC Yukon. 5.7 litre. I started it this morning and it sounded like a gunshot. Smoke came into the vehicle and the PCV valve and one other sensor that plugs into the valve cover(s) were ...
2
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0answers
91 views
1983 22R Randomly started sounding like a chopped harley
5 second videos, this is what it sounded like:
Yesterday: http://youtu.be/_2Nl0bR1QOA
and
Today: http://youtu.be/zP4_cT8yaH4
It sounds like this regardless of engine temp
Started randomly
It's ...
2
votes
0answers
109 views
Fixed exhaust leak, running hotter now
Yeah, it's the Solstice again.
I just replaced a v-band clamp between my turbo and the cat. The engine runs a lot smoother now - go figure - but it's running quite a bit warmer.
Before I recently ...
2
votes
1answer
3k views
Why do some cars fart?
Sometimes, I'll hear Mustangs and Honda Civics "farting" and making loud noises.
What is the cause of this and why doesn't my car do it?
1
vote
0answers
58 views
Do I need to replace my catalytic converter or it could be exhaust leak?
I have WV Polo 1.2 petrol from late 2005 with 170k. Recently I got the check engine light and I went to non official repair service (since there isn't one in my country). They told me it's the oxygen ...
1
vote
1answer
225 views
Emission High CO and High Lambda
It fails at 2500rpm only with CO 0.5~0.6 and Lambda 1.04~1.05.
How can it possible be that emission fails because of HIGH CO, and HIGH lambda reading... It means that engine runs rich and lean at the ...
1
vote
0answers
43 views
Just changed catalytic converter and getting P0171 and P0430 codes
Vehicle is a 2004 Mercury Monterey, V6. Over the winter the injectors were replaced, and all 4 O2 sensors. It failed a state inspection, because the catalytic converter had been damaged, presumably ...
1
vote
1answer
51 views
1994 Chevy 1500 loss of power slow acceleration what could this be
Chevy having slow acceleration when driving I was told it could be my catalytic converter could it be fixed by replacing with new exhaust system
1
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0answers
111 views
Will an evap canister leak make the same noise as a cracked exhaust?
Video of driving recorded with iPhone SE(5).
2002 Honda Accord, parked outdoors New England, 214,000 miles
Regular oil changes 1 owner before me, I got it around 150,000 great service records. Tran ...
1
vote
0answers
74 views
Where are the O2 Sensors in a VW with 3 sensors?
My VW CC 2010 2.0L Sport CBFA has three oxygen sensors and two catalytic converters.
The CCTA version has 2 oxygen sensors and one catalytic converter.
Since the engine is in a transverse 4 ...
1
vote
0answers
329 views
Would a hole in the catalytic converter cause code p0420?
VW CC 2010.
Catalytic converter was replaced when I first got the car at 78k miles.
It is now at 83k miles.
Downstream oxygen sensor was replaced at 80k miles.
There is a small leak in the catalytic ...
1
vote
1answer
45 views
2014 HARLEY ULTRA EXHAUST UPGRADES
I'm helping a buddy. He has a 2014 Harley Ultra Classic with a high output 103. It has 23k miles, Vance & Hines Short Slashes, Vance & Hines Heavy Sucker air filter, and Vance & Hines Fuel ...
1
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0answers
33 views
Can Super Charger performance gains be limited by a stock exhaust?
Edit: As suggested by Rory Alsop in the comments, I believe this question is not a duplicate of:
Performance Exhaust -- what, how, why?
&
Exhaust Backpressure and Its Impact on LTFT Values
I ...
1
vote
0answers
321 views
Cold weather idling issue, white smoke, black soot and loss in power
I have a 1976 cj7. I recieved it as a gift from my Dad in March this year. I absolutely love this Jeep and have been driving it as often as possible. It had a really bad idle and severe exhaust/fuel ...
1
vote
2answers
83 views
dashboard light to replace catalytic converter, later engine loud dash light disappears
A engine checklght appeared on my 2004 Hyundai Elantra GT hatchback, and was diagnosed as a faulty catalytic converter, that was considered normal for the age of the car. About 3 days later when i ...
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0answers
163 views
1
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1answer
273 views
What could be causing High HC GPM, CO GPM, prevent the RPM from going over 4000, and creating an odd exhaust sound?
I have a Toyota Camry 94, it failed its emission test today with 2.62 HC GPM(Limit is 1.2) , 56.87 CO GPM (Limit is 15). The car also won't rev over 4000 RPM and acts as if it has a governor on when ...
1
vote
0answers
312 views
How can I locate the source of this exhaust rattle?
'04 Infiniti G35. Recording of sound I'm hearing. The best example is at 0:39 onward. Heard best with headphones.
Firstly: I'm aware I have an exhaust leak. That part, I can hear all the time, ...
1
vote
0answers
25 views
1996 Infiniti g20 fails smog
I am the original owner of this CA car, and have been gradually having higher HC readings on smog checks. It failed in 2016, cleaned out the Air flow components; it passsed, but this increased the NO ...
1
vote
0answers
47 views
Pipe has come out of the silencer?
I hit a pothole this morning on my way to work. I couldn't swerve it so slowed right down but it still sounded painful!
Afterwards the car was making a boy racer type noise, so took it to the garage ...
1
vote
0answers
80 views
Still having blue smoke
I have no idea in car engines. My car is having a blue smoke in the exhaust. The car mechanic suggest to change the piston rings and valve seals. After he replaced it I still get this blue smoke when ...
1
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0answers
38 views
Strange sound at end of rev range when push throttle when parked.
I was just wondering what your thoughts are on this sound I’m experiencing with my Jeep? I have a Jeep Commander 5.7 Hemi 2006 with a Magnaflow 49709 cat (newly installed) and a magnaflow 18″ oval ...
1
vote
0answers
2k views
New car - a lot of smoke from exhaust
I got my new car today from the dealership, and while driving home I noticed there is quite a bit of smoke coming of the exhaust, to the point of blocking my rear window visibility. Only happens when ...
1
vote
0answers
144 views
Exhaust system pipe welding
Hi everyone I have an exhaust for a motorcycle which I have to modify.
The trouble is pipe which connects to the end can is of a different diameter to the bit it's supposed to connect to on the ...
1
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0answers
341 views
Motorcycle exhaust can size
How does the length of the exhaust 'can' affect the noise level and engine response of a motorcycle. A number of articles mention how the pipework diameter affects response but I can't find much on ...
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0answers
38 views
2005 Ford Explorer Sport Trac Exhaust System
Would I be able to fit a Spintech Pro Street 9000 series onto my 2005 Ford Explorer Sport Trac? And if so, what else would I need besides the muffler itself?
1
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0answers
38 views
Nil HydroCarbon in the exaust
If hydrocarbons (HC) are nil and Carbon Monoxide (CO) is 0.33% and Carbon Dioxide (CO2) is 14%
Why does the HC show up as nil?
Is there a problem with having no HC readings?
1
vote
1answer
2k views
White exhaust and smell when accelerating
I just noticed my 92 Grand Am is spitting out a lot of white exhaust and has a gas smell to it. I made it home but engine started sputtering and seemed like car was going into cardiac arrest. Haven't ...
1
vote
1answer
22 views
2014 Passat sounds louder than before
I have a 2014 VW Passat 2.5L I bought it used last year. It was super quiet and great to drive when i bought it. It has close to 80000 km on it. The past few months I had i sitting in the garage not ...
0
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0answers
33 views
Painting a Front Catalytic Converter — Bad Idea or Not?
I need to replace the front catalytic converter on my 2006 Suzuki Aerio. The part came in bare metal, no paint or any coating is visible or possible to feel on the surface.
Should I not paint it to ...
0
votes
1answer
36 views
ECU tuning exhaust - why?
When a sports exhaust is fitted to a car apparently a re-tune of the ECU is required. For a simple example consider a regular unmodified normally aspirated petrol car which then has a sports exhaust ...
0
votes
1answer
37 views
Can exhaust backpressure cause a car to cut out?
Car cuts out sometimes immediately sometimes after 30 seconds etc.
If I hold the key on the starter position engine keeps running and stays on.
I know this can be caused by a faulty ignition switch.
...
0
votes
1answer
52 views
Can damaged sports exhaust lead to reduction in sound factor?
Assume you have a sports exhaust which sounds awesome but suddenly starts to quiter or less awesome.
there are no air intake, engine or exhaust leak problems.
Could any other factors cause it to ...
0
votes
0answers
42 views
Exhaust vibrations/noise
I have had for some time some exhaust noise/vibrations, and decided to buy a new exhaust. However when I checked the exhaust I couldn't find any holes or any bad rubber holders. I decided to not ...
0
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0answers
44 views
Peugeot 206 2003 engine overheating STOP light
I bought my 2003 Peugeot 206 second hand from a private car dealer about 4 months ago and everything seemed ok, except for the exhaust pipe appearing to be tied with plastic zip locks.
About a month ...
0
votes
0answers
38 views
Can exhaust system hangers make a car sound significantly different?
Civic coupe vti 1999.
I previously had an accident after where my low suspension car fell to the ground at low speed when a wheel nut cane off.
After this the car didn’t sound as vibrant and peppy as ...
0
votes
0answers
31 views
Long term engine issues by using Active Exhaust?
Looking to install OEM active valve mufflers on my 2019 Mustang EcoBoost.
Wondering if the valves opening and closing, thus changing exhaust back-pressure would cause the engine to run lean/rich and ...
0
votes
0answers
26 views
How to design an exhaust pipe to increase scavenging at specific RPMs
Good day all.
I'm looking for advice on an exhaust design problem. It is easy to find videos explaining exhaust scavenging, but how do you control it? Surely there must be some physics that can be ...
0
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0answers
299 views
White smoke from exhaust after brake job
I attempted (and failed) to replace my master cylinder and brake booster. I ended up putting a lot of brake fluid into my new booster before I realized it. (In fact, in an attempt to determine the ...
0
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0answers
222 views
Did muffler shop install wrong size flex pipe?
2003 Camry 2.4L. Noticeable vibration after the repair especially at idle with ac on and in reverse with foot on brake. They said bad motor mounts became noticeable after the repair. So I installed ...
0
votes
1answer
27 views
Exhaust 98 Ford Expedition
I need a complete exhaust system. Someone gave me 1. Not sure that it will fit my truck. How can I find out? It also includes a catylic converter. Mine currently has a hole in it. How do I find out if ...
0
votes
0answers
84 views
Trouble identifying source of exhaust note change
I am completely inexperienced when it comes to hands on mechanics, though I do understand in a theoretical way how things generally work.
I have an Acura Integra 1997 LS that has been gradually ...
0
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0answers
65 views
Squeeking sound back of car caused by exhaust?
My car keeps making a squeaking sound at back. There is an exhaust pipe which if you shake it makes noise.
I'm wondering if its that the case, however i only notice the squeeking sound when going ...
