Question about Motorcycles

1 Answer

My 2007 cobalt ls kind of sputters or pops almost like a small backfire when I slow down from 5th gear not only that but I smell exhaust in the cabin so I'm assuming I have a leak somewhere my question is would a short ram intake or muffler I put on affect that and how much could it cost

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 52 Answers

It sounds like you have distrurbed the fuel/air mixture. Any change in intake or exhaust pressure will do this. When allowing more air in, or a free flowing exhaust, or a leak in the exhaust, it will cause the mixture to become leaner unless the computer is reprogramed. This will cause a popping when decelerating.

Posted on Feb 15, 2014

6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 216 Answers

SOURCE: honda vt 750 backfires

First check all spark plugs(NGK are a good brand) / HT leads / plug caps. Secondly, Check that the valves are properly gapped - if they are tight they will leak the cylinder gases past the valve(s) and this will cause a misfire. A losse or leaking manifold will also. if you have aftermarket pipes then it may need to be rejetted to suit. If you got them at a dealer they will know the right jets. I couldnt find an english manual but here is a german on that may help with diagrams etc... Good luck. Rate if good.

Posted on Mar 26, 2009

  • 112 Answers

SOURCE: Havin problem with 5th gear (OD) Bike slows down

Sounds like the clutch might be going bad.

Posted on May 17, 2009

  • 301 Answers

SOURCE: i took off the plate rester off the stock muffler

The backfiring won't harm anything, it is just annoying. You can reduce the backfiring on deceleration to a minimum - or maybe eliminate it completely - by having the carburetors synchronized.

To be safe, you are probably going to be better off in the long run if you put the arrestor plates back in. Not just from a noise level concern but also because this modification may cause your allready lean-running engine to run even leaner. This can cause driveability problems in cold weather and perhaps a slight reduction in engine life.

Posted on Nov 01, 2009

  • 346 Answers

SOURCE: I have gas leaking from a hose that is protruding

The hose is a bowl vent from your caburetors, and the backfiring is due to excess fuel getting into your engine. It has nothing to do with your exhaust, yet.

Your bowl floars are sticking and allowing fuel to flow into the carbs even though the bowl is full. You have to take the bowl off, figure out why it's sticking, and repair it.

The exhaust will actually make your engine run lean a bit if you don't have any compensation equipment (EFI or electronically controlled fuel jet) on your bike, so you'll have to tune accordingly for it.

Posted on Jan 05, 2010

  • 635 Answers

SOURCE: backfiring on deceleration from exhaust pipes

May be running too lean or too rich. Check the color of your plugs, black dry and sooty means they are rich, white with blisters lean.

Posted on Apr 03, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

My 2004 MERCURY Monterey is sputtering/ bucking backfiring and smells of gas. I have had the fuel filter rack and pinion cv joints plugs and wires changed all within the past 8 weeks

Questions, Troubleshooting Help & Support Page 8 - Fixya
Why does my 2012 dodge ram 1500 fuel pump stay on... Dodge Cars &. ... My 2004 MERCURY Monterey is sputtering/ bucking backfiring and smells of gas.

2005 PT Cruiser GT misfiring and bucking - Edmunds > Chrysler > Chrysler PT Cruiser
Mar 24, 2010 - I put in some fuel injection cleaner and filled the tank with Premium. ... itbucking, sputtering at low speed until i can pump the gas enough to get ...Missing: monterey ‎smells

Sputter/Stutter and Loss of Power - Ford Explorer and Ranger ... > ... > Stock 1995 - 2001 Explorers

Jun 2, 2010 - 19 posts - ‎6 authors
If the sputter got real bad, I could smell what smelled like weed eater gas inside the cabin. As you could also imagine, there is a loss of power.

Feb 03, 2016 | 2004 Mercury Montery

1 Answer


bring in your vehicle to get the transmission filter changed and the cooling rad (lower part) flushed out. that should fix your problem.

Jan 15, 2014 | 2007 Chevrolet Chevrolet Cobalt LS

1 Answer

My rf600r backfires when im coming down in gears or coming up to a corner or bend i drop down to second gear keep it there for about 10 seconds and bang everyones looking or ducking, is it a major pro

Some popping on deceleration usually means a lean idle mixture.

However, a backfire like you describe, I'd start looking at an exhaust leak, like a bad gasket where the pipes bolt to the head.

Beings it only recently started, and getting more common, yep, sounds like a bad gasket that's not getting any better on it's own.

Nov 19, 2013 | 1992 Suzuki RF 600 R

1 Answer

Sputtering car, check engine flash

Stop using the car

You have serious cylinder misfires,so severe
you maybe ruining the exhaust converter,thus the smell

I won't write a book on all the causes or fixes,have a
repair shop diagnose

Dec 10, 2012 | Cars & Trucks

1 Answer

My steed is slow to pick up speed and when i am on the 4th or 5th gear, it has no power and i can hear some chain rattling which is not present on 1st to 3rd gear. also the exhaust backfires a little when...

cud be camchain wearing out but maybe the carb jets have issue making engine slug along at higher speed--purchase a haynes or clymer repair book online--library has cycle manuals sec629

Aug 21, 2011 | 1997 Honda Steed

1 Answer

91,000 miles I accelerate and felt the engine sputter. There small sputters, but I'm sure they're going to get worse. It also happens when I cruise around 50+ mps. No lights have come on

Sounds like you may have a small random misfire.. Have your spark plugs checked...One just maybe cracked...And sooner or later, as it gets worse the check engine light will pop on, and you can go from there..Goodluck...

Mar 02, 2010 | 2007 Chevrolet Equinox LS New Cars

2 Answers

Car backfires hesitates when depressing gas pedal

Check the vacum lines going to the distributor and transmission. If they are leaking it could be your problem.

May 07, 2009 | 2003 Lincoln LS

1 Answer

Why does my 1993 Acura Integra pop out of 5th gear?

Only 2 thing cause this, worn engagement dogs on the gear pack or worn shifter parts or both, how many miles?

Nov 18, 2008 | 1993 Acura Integra Hatchback

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

28 people viewed this question

Ask a Question

Usually answered in minutes!

Top Motorcycles Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4514 Answers


Level 3 Expert

75797 Answers


Level 3 Expert

102366 Answers

Are you a Motorcycle Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides