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Questions tagged [exhaust]

Questions about Exhaust systems, Catalytic Converters and Headers/Manifolds

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How many catalytic converters does a VW CC 2010 2.0L Sport have?

I have a P0420 code on my VW CC 2010 and I've narrowed it down to a faulty catalytic converter. I have edited this photo to try and explain easier. In the red circle is the catalytic converter I ...
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2answers
25 views

Thin white smoke after getting gas and fuel system cleaning

First time posting, have no car knowledge. We filled my wife's 2017 Dodge Durango up at a new gas station, shortly after that we noticed sluggish acceleration and trouble going off stops. We took it ...
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3answers
478 views

Sheared off exhasut pipe: How to fix without a welder?

The exhaust pipe on my 2005 Malibu has sheared off and is causing excessive noise. Best guess at the cause is that there was a joint that failed due to rust. I would like to temporarily repair the ...
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1answer
47 views

Is it unsafe to drive with a leak in exhaust box center silencer?

I have a 5mm in diameter hole/leak in my exhaust center silencer box. The part seem to be wearing with other tiny leaks developing. I plan to sell the car in 6 months at the latest. The center ...
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2answers
44 views

What is the best TurboCharger Down Pipe Length for a turbodiesel engine? [closed]

What is the best length for Turbocharger Dump Pipe. I have a Force Gurkha with a 2.6 litre diesel engine. I removed the second CAT Converter and Muffler from the exhaust. So now it has a CAT and then ...
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0answers
9 views

NOx sensor location - 5.2L 4HK1

So we have a 2011 Isuzu NPR-hd that is giving us a few codes, one for the NOx sensor and one for the glow plug. NOx code is: P2201, glow plug code is: P0672 (cylinder 2). My question is, since there ...
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1answer
74 views

Could the exhaust also be fuel? [closed]

Could the exhaust from a piston gas engine be run to another engine that uses Carbon Monoxide as the oxidizer? Would the engine work the same as a gas engine mechanically? This link has inspired ...
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1answer
20 views

Is there a way to connect a 51mm silencer to a 23mm downpipe

I have a tgb r 125x can't find full sport exhaust or down pipe,wondering if it is possible to weld a 51mm slip on silencer if I cut silencer off one piece exhaust and reuse down pipe which is only ...
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0answers
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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 ...
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1answer
28 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 ...
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1answer
30 views

Exhaust back box detached - Peugeot 207 1.4 2008

yesterday the back box of my Peugeot got detached. I have attached a photo of it. I have a couple questions. Does it look like I need a new centre exhaust pipe? Is there any chance to claim money ...
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1answer
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Cracked Flex Pipe Repair for 2007 Chevy HHR

Background: I've been told by my (non-dealer) auto mechanic that I have a crack in the flex pipe that is connected to the exhaust manifold. Problem: Said mechanic claims that an after-market kit ...
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0answers
26 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 ...
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1answer
30 views

Exhaust smell after transmission replacement

Backstory: I took my car in for a transmission fluid change and the mechanic damaged my car. The engine light was on it was stuck in third gear and not driveable. I am not sure what happened I took it ...
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1answer
10 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 ...
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0answers
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2007 honda cr-v not pulling on inclines intermittently

2007 Honda CR-V automatic stick shift, starts making noise and won't go over 45 mph. This happens when pulling hill then stops after going down hill after a period. Then car runs fine and accelerates ...
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0answers
21 views

Repair question

My Hino truck using engine JO7E is giving an engine check signal on the dashboard. The diagnostic tool is showing error P2002 which is to do with DPF Malfunctioning. we have tried to do a regeneration ...
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2answers
56 views

Patching a hole in a dirt bike exhaust

I have a 1974 Honda Xl125 exhaust pipe which has a crack in it. I attempted to weld the crack, creating a hole accidentally. How should I properly patch the hole? Here is a link to a photo for ...
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3answers
200 views

Can I bend an exhaust flex pipe?

My exhaust pipe in my 2007 maxima has a crack about an inch outside of a flex pipe, and the repair cost is more than the car is worth to me. The 2 pipes are totally separate, but right next to each ...
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3answers
53 views

white smoke from exhaust

I have white smoke coming from the tailpipe has a burnt plastic smell the engine is not smoking and the car is not overheating. The car runs and sounds fine. the car set up for the past 6 months. the ...
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0answers
20 views

2004 toyota camry.Failed emission test with Lambda reading of 1.06.appreciate any advise on how to rectify

My 2004 Toyota Camry failed an emission test with a reading of Lambda 1.06 Would appreciate any advice on how to rectify. Austin Rep. of Ireland
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1answer
41 views

Is it ok to use a used manifold and downpipe?

car is civic vti 99. Need to change manifold and down pipe due to leaks. Aftermarket parts for this car are expensive so I was wondering if should get used parts from a breakers. When I suggested ...
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1answer
78 views

What causes imbalance in vapor seen between dual exhaust tail pipes?

I noticed that most vehicles in the Winter do not have the same amount of vapor coming out of both exhaust pipes. I understand that some exhausts are not true duel exhaust therefore presume that this ...
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3answers
488 views

Can Exhaust leaks be repaired by welding?

I have some small leaks(few mm) in my manifold and down pipe. As mine is a rare US manufactured car(civic vti 99) and I'm in uk, mechanic said it will be quite difficult to find the part. I aksed ...
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1answer
100 views

What ways can exhaust leaks get into the cabin and how can I prevent\reduce it temporarily?

I have some small exhaust leaks(manifold and downpipe) and obviously need to replace those parts. However I can currently smell exhaust fumes coming through the windows and also through the heater(...
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2answers
80 views

Cause of quieter, less crisp, non-peppy and less vibrant sounding car

Car is a Civic VTi 99. After taking back from garage following radiator replacement I found that it sounded quieter, less crisp, less peppy and vibrant than before. I thought the engine may have ...
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0answers
130 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 ...
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1answer
240 views

Can I spray paint a engine's heat shield?

While planning some tasks for "restoring" my engine bay, I noticed one of the things that significantly affect the way it looks is the heat shield. It's rusty, since the corrosion was probably much ...
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3answers
61 views

Catalytic Converter self-service

Can I remove catalytic converter, remove loose fragments, then put it back on without harming vehicle? I have a 2003 Ford Windstar.
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2answers
128 views

Why would a lighter flame go into an exhaust pipe?

I just saw this image and I am wondering what is happening here: The car was running and it seemed that the wind direction was out of the pipe?
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1answer
222 views

Exhaust backfire on reductions/engine braking

I've recently acquired a 2001 Corsa Milenium (a Brazillian saloon version of the Opel Corsa B, with a GM 8V 1.0 MPFI engine). It has a performance air filter (which I plan on replacing with the ...
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0answers
180 views

Plastic smell of new flex exhaust pipe

I've just got installed new flex exhaust pipe. After driving for few minutes, when the engine started to get to operating temperature I started to notice a plastic odor inside of a car. I started to ...
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1answer
661 views

2005 toyota camry 3.0l bank 1 sensor 2 where is it

i have a 2005 toyota camry v6 3.0l it needs a bank 1 sensor 2 where is it or which one on the exhaust is it. im not sure about words like downstream just want to make sure
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3answers
266 views

Catalytic converter without heat shield?

My car was making a rattling noise when driving with very low RPM and slow, or very high RPM and fast. When cruising it was OK. Drove car to the mechanic and he said that cat is broken. He replaced ...
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1answer
620 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?
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2answers
44 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
95 views

Black soot on exhaust manifold 2015 Ford KA 1.2

Is this normal or does it need replacing?
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1answer
59 views

VW Golf MK4 BCB engine vibrations at ~1850 RPM

I have gotten exhaust front-pipe (1J0254300P), and catalyst changed in my VW Golf MK4 BCB engine. The used part was an aftermarket part from BM-Catalysts. Since then it has some vibrations between ...
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1answer
583 views

What is this piece, and is it important?

I recently started hearing a rattling noise coming from under my 2009 Kia Sedona. I jacked it up and found that a piece had completely rusted off and was just resting on top part of the exhaust ...
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2answers
822 views

How to remove broken bolt with screw extractor from exhaust manifold

Okay folks, so I have here an exhaust manifold from a 1989 Volvo 240. I was able to disconnect it from the downpipe without breaking all but a single bolt. I snapped about a quarter inch from the ...
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0answers
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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 ...
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1answer
168 views

Intermittent p0420

I'm working on a customer's 03 Isuzu rodeo with the 3.2 6VD1 another shop had put new catalytic converters and O2 sensors on trying to troubleshoot a bad hesitation problem. I've since fixed the ...
2
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1answer
27 views

Most durable exhaust hanger?

I have a 2004 f150 and the exhaust hangers have rotted off except that last one at the very back (hook though rubber isolator). My exhaust pipe keeps twisting so that the tailpipe is against the ...
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1answer
37 views

Can I use a yoshimura exhaust in any bike?

I have an old Triumph motorcycle 955i that im customising. I want to change the exhaust and use a second hand yoshimura cheap one Is that possible? Or the exhaust needs to handle different pressure ...
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0answers
30 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 ...
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4answers
1k views

Can exhaust problems cause a knocking sound in anyway?

I have an extremely lowered car, the exhaust pipe moves, squeaks and clanks at times. The sounds are not so bad on smooth surface roads. I had been getting a knocking sound from under car and just ...
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21 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 ...
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3answers
98 views

What is exhaust gas recirculation?

From what I understand, EGR is used to reduce the temperature of combustion without increasing the amount of fuel injected to reduce NOx emission. This is done by reducing the oxygen percentage ...
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1answer
350 views

Muffler fell off now has transmission issues

My 02 Dodge Caravan's muffler fell off sometime when I was heading to my girlfriends place. I didn't notice it till I got to her place because I listen to music loudly. Anyways I was driving it around ...
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1answer
251 views

Diagnosing a p0420 code for 2005 nissan x-trail 2.5L

I own a 2005 nissan xtrail with a 2.5L engine (QR25DE). I have problems with my vehicle, too much fuel consumption ( 3.8km/L ) My car has a 60Liter tank , my last fuel up gave me 229KM until the ...