Question about 2003 Honda VT 1100 C2 Shadow Sabre

1 Answer

Engine is making a sucking sound

I started my bike, heard a loud pop like a backfire, but it sounded like it came from the front cylinder. The bike started but made a sucking sound every time that piston took a stroke. I dont know what is going on.
Also what size socket do I need to change the spark plugs.

Thanks in advance for your help

Posted by on

  • Anonymous Mar 15, 2014

    TVS Centra bike engine overheating after changing of new piston and coming more sound like tik tik tik tik... what is the problem please help me...



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert who has posted more than 50 answers, of which 90% or more were rated as helpful.


    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 61 Answers

Sounds like when your bike backfired it blew the carb out of the intake boot. it is more common than you know on this model. just loosen the clamp and push it in untill it seats in the boot them tighten the clamp and go ahead and check the other clamps while you are at it. the spark plug socket is 18mm there should be one in your tool kit or you can buy one at most autoparts stores. Thanks

Posted on Aug 03, 2010


1 Suggested Answer

  • 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


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

What makes my truck knocks when i cranked it up a loud pop sound and then it started knocking

comment on petrol or diesel
in any case have a compression test done to check for mechanical failure

Sep 25, 2015 | 2008 Ford F-150

1 Answer

My Polo Playa 1.6 2002 was driving fine, just heard a loud bang (backfire) and car stalled . Will not start sounds like engine is not turning. What could be the issue?

check the timing belt has'nt snapped , do not try starting engine until you are sure the belt is in tact, if ok get the OBD codes read as will narrow down if a switch/sensor is at fault , if nothing shows check the cylinder compressions

Feb 14, 2015 | Cars & Trucks

2 Answers

Bike has annoying ticking noise from mostly rear is a 2000 shadow spirit, with 33000 miles, i was told valves needed adjustment at 30,000 miles , along with timing chain adj.. is this correct?

Without being able to stand next to the machine and listen it would be very hard to say what the noise is. Valves are generally easy to adjust and if loud have a high pitched tick sound. Cam chain adjusters generally self adjust and are reasonably quiet. If the automatic adjuster goes bad it will generally make a clatter sound or a loud clack. One thing you have not considered, if the the exhaust gaskets in the head go bad or leak air, they can also produce a loud ticking sound. You often hear this sound in older V8 engines. It sounds like a lifter is bouncing around inside the motor but the sound is caused by a blown gasket between the head and exhaust manifold. If you experience some popping/backfiring during deceleration try replacing your exhaust o-rings in the heads. This may solve both problems. If the problem is internal to the cylinder you may need to change a bad cam chain adjuster. As always start with the cheaper fixes and work your way up. Adjust valves and cam chain tensioner if not self adjusting, replace the exhaust gaskets next, and if that does not fix it, replace the cam chain tensioner. Hope this helps.

Aug 30, 2011 | Honda VT 1100 C Motorcycles

1 Answer

Backfires when i let off the gas

When you let off on the gas on your bike, the fuel air mixture to the engine is extremely rich. So rich in fact that it will not burn. If your bike is backfiring through the exhaust with a loud pop, this is usually caused because your exhaust system has an air leak in it somewhere. Air is sucked into the exhaust system leaning out the fuel air mix and turning it into a combustable mixture which then ignites causing the pop. Check all the joints where the parts of your exhaust system come together.

Good Luck

Jul 18, 2011 | Harley Davidson FXDL Dyna Low Rider...

1 Answer

Backfiring and popping on deceleration on a 2005 FLSTC, after installation of Vance & Hines longshot HS exhaust, & Big ****** air kit. The bike has sequential port f/i and was remapped with a...

Aftermarket pipes tend to lower back pressure, this will cause the fuel/air mix to lean out and result in the "popping" you hear---Backfiring, is extremely rare these days with electronic ignitions and the high reliability of engines. Real backfiring means the engine is not properly timed and the fuel/air mix is getting a spark and ignition at the wrong time (when the intake valve is open). Real backfiring is actually the bike "spitting up" in a sense, backwards through the carburetor or intake.You can check for exhaust leaks up around the cylinder heads by putting on some gloves and covering the exhaust tips momentarily. I have seen exhaust leaks that will make the popping worse by allowing air to be sucked in during deceleration...Hope this helps.

Jul 03, 2011 | Harley Davidson FLSTC - FLSTCI Heritage...

1 Answer


I have a couple of suggestions for you.
Your symptom sounds like your bike is running lean(problem improves with choke).
Add that to your other symptoms & it sounds like your bike is sucking air at the inlet tract(front of carbies).
I recomend that you check that any hoses that may be fitted to your bikes inlet manifolds,arn't damaged or split.
If you find they seem fine,try running the bike,& while it's runnung,spray some WD type spray on the manifolds at the front of the carbies(use the nozzle).Be sure to spray the joint of the manifold where it bolts/is clamped to the cylinder head.
If any leaks are present,the engine speed or smoothness will change(as the WD gets sucked in through the leak & then changes the fuel mixture).
Another way to check is, using a piece of hose(about500mm long)place one end in your ear &use the other end as a probe to search for leaks while the engine is running.If there's a leak you'll hear it through the hose in your ear.
I hope that my guess is right & you should find a leak there somewhere.
I hope that this may help.
Kind regards Andrew Porrelli

May 17, 2011 | 2005 Suzuki Boulevard S83

1 Answer

2007 Honda Shadow Spirit VT1100c exhaust leak at cylinder head and it backfires

Hi, Ltbuerkle #8 looks good and the usual suspects are:
1. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead acid batteries.
2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Faulty main circuit breaker and or connections.
4. Faulty ignition coil and or connections.
5. Faulty spark plug, oil or gas fouled, wrong heat range or service type, wrong gap, loose in the cylinder head, broken electrode or insulator.
6. Faulty spark plug cables, leaking or broken, internal damage check for spark leakage in the dark.
7. Faulty ignition module, switch, CKP, MAP, CMP, sensor and or any connector in the ignition circuit could have corroded, loose, or broken pins/sockets
8. Burnt exhaust valve or air leak in the exhaust system.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
backfiring popping on decel
Honda shadow exhaust leak backfiring fix
Honda shadow vt1100 Owners Workshop Manual
Honda VT1100C2 Owner Manual Page 3

Oct 11, 2010 | 2005 Honda VT 1100 C Shadow Spirit

1 Answer

I started my car and heard a loud pop now a trac off light and my check engine light is on. I know i am about due for a tune up but the engine is shaking and making a loud noise.

sounds like eithor you blew a cylinder or a head gasket might have been a spark plug blow out
look under your hood when the car is running you will see the problem if it is one of theise

other wise 1 plug might have craped and the raw fuel was dumped down the exhaust and you got a backfire

Jan 01, 2010 | 2001 Pontiac Sunfire

1 Answer

Appeared to have a low battery when starting my bike, but it turned on. Rode about 1 1/2 miles when it hesitated twice and then i heard a loud pop, sounded like a backfire. The bike turned off and i had no...

So is the battery...ignition needs "X" amount of Volts to run the ignition, the BANG you heard was the engine pre-igniting a fuel mixture in the combustion chamber - because the ignition didn't have enough juice to fire the plug...but the HEAT of the engine DID!
Replace the battery with one from WalMart and Ride!
Good Luck

Jun 23, 2009 | 2001 Suzuki VL 1500 Intruder LC

Not finding what you are looking for?
2003 Honda VT 1100 C2 Shadow Sabre Logo

263 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honda Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4521 Answers


Level 3 Expert

76109 Answers


Level 3 Expert

4340 Answers

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

Answer questions

Manuals & User Guides