Question about Honda Motorcycles

1 Answer

1986 vt1100 rear cylinder sparking issue

So i have spark to all four plugs when cranking the motor over the bike starts fine then the rear cylinder quits firing after 2 seconds that cylinder stops firing. but as soon as i hit the start button it starts that cylinder right back up again and 2seconds later its off plzz help if any ideas

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Renaissance:

    An user who is expert in 3 categories / brands.

  • Honda Master
  • 1,727 Answers

You have 12 volts going to the coils... use a test light to see if this power drops out... then you need to find out why... if it doesn't drop out then I would be looking at the pickup coil because this triggers the coil to spark... if this isn't the issue, suspect a bad coil

Posted on Dec 28, 2013

Testimonial: "just ordered new pick up coils cuz i tried switching coils last weekend and same issue and there is no power drop and the rear cylinder spark is a lot weaker than the front cylinder spark so this is a good asumption we will see as soon as i get my pickup coils from ebay thanks for the advice we will see in a few days what happens fingers crossed thanks again"

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

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

Hi,
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.
Good luck!

Posted on Jan 02, 2017

Ad
  • 3567 Answers

SOURCE: bike only fires once

Okay, let's have a look at it. Say Ahaaa.
The probable cause of the problem is not the spark. Get a fresh set of Stock NGK spark plugs, ground the plus to the engine, and check each cylinder for spark as the starter button is pressed for 3 seconds or so. I will wager that the spark is present.

The likely problem is the fresh gas was put into a very rusty gas tank. Bits of rust now inhabit your carb and are having fun plugging up the carb. Look at the gas valve. With a little luck there is a small bowl behind the valve. Remove it and tell me what you see in the bowl.

Posted on Apr 11, 2009

  • 101 Answers

SOURCE: 04 sportster 883 will turn over and back fire but will not start

Sounds like it jumped time.. Check your timing ..

Posted on Jan 24, 2009

  • 3 Answers

SOURCE: NO SPARK

most likely you have a CDI box failure. the easiest way to find out tho is take it to a dealer and have them run a diagnostic test, usually around 60$ find out whats wrong and depending on the problem have them fix it or tackle the issue yourself.

Posted on May 12, 2009

wayneman01
  • 301 Answers

SOURCE: honda 1986 vf400f nc13 engine front two cylingers not firing help

If the spark appears to be weak only for the two front cylinders, then I would suggest checking the electrical connections for the ignition coils.
If the spark for the other two cylinders looks the same (yellow), then I'd suggest checking the compression on the non-functioning cylinders. A compression reading of 140~160PSI is what you're looking for. Low compression indicates internal engine damage - or could be from something relatively simple - like insufficient valve tappet clearance.

If the bike has been sitting for a long period of time, it could be that the carburetors are plugged up with fuel varnish. This can cause some cylinders to not run. A complete carb disassembly and clean-out will be needed.

Posted on Oct 23, 2009

Testimonial: "thanks for that feed back . there is plenty of fuel and compression is non existant on front left and 80 psi on front right,I suspect cam wear????"

  • 440 Answers

SOURCE: one cylinder spark plug not firing- replaced plug

Hi
With Ignition switch off :-
1st Check for bad connections, broken/crushed wires, continuity & resistance between the cap, HT lead, coil, ignition coil primary wires
2nd Disconnect the CDI unit from its connector & check for the same between the loom side of the connector back to the coil
3rd Check coil is earthed

If all OK suspect the CDI unit but double check everything first( there are some more checks as well), as these are very expensive

Ride safe
Bike-Doc

Please rate this solution well if it has helped !!
Any comments welcome


Posted on May 11, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

Would a bad spark plug not make my turn over? I have a 87 honda shadow 1100.


Hello there.

Not a bike expert but all engines are similar.

Short answer no. The spark plugs are inside the cylinder heads and have nothing to do with physically turning engine.to start it.

One chap had the same problem as you..See here for the story, it was the starter Motor faulty. http://www.hondashadow.net/forum/72-technical-discussion/103891-85-vt1100-wont-start.html

Turning her over works pretty much like this. Four items, Battery, Start switch, start Relay, Starter Motor.

Battery provide heavy duty power to the Starter Motor (which turns the engine over) via a RELAY which has a low power circuit. when you press ignition, the relay connects the heavy duty power to the starter to make it turn.;

Not turning over ....
1) Is the Battery charged ?
2) is the Start switch faulty ? (there would be no clicking from the starter relay)
3) Do you hear a click when trying to start but starter motor not turning ? If so it COULD be the starter motor.itself OR the relay. .

The relay looks like this
http://www.amazon.com/Starter-Solenoid-Relay-VT1100-Shadow/dp/B008I5OU6Y/ref=sr_1_28?s=automotive&ie=UTF8&qid=1411408543&sr=1-28&keywords=starter+solenoid+relay+honda+shadow

Hope this helps a bit.

Sep 22, 2014 | Motorcycles

1 Answer

1986 Honda VT 1100 C no spark


Hi, Anonymous and the usual suspects are:
1. Fouled spark plugs.
2. 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.
3. 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.
4. Loose connection at ignition coil or plug between ignition sensor and module.
5. Spark plug cables in bad condition, shorting/leaking, spark plug cable connections loose check for spark leakage in the dark.
6. Faulty ignition coil or electronic control module.
7. Faulty pulse coil.
8. Faulty CKP, CMP, or BAS sensor.
9. Faulty ignition switch.
10. Tilt sensor needs a reset.
11. Security alarm failing to disarm needs reset
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
86 shadow VT1100 No spark all of sudden
Honda Shadow VT 1100
Honda SHADOW VT1100 Owners Workshop Manual
http://www.partsfish.com/page/oem-parts-for-honda
Honda Shadow VT1100 Owner Manual

Jan 31, 2014 | 1986 Honda VT 1100 C

2 Answers

1986 Honda VT 1100 C no spark


Hi, Henry and the usual suspects are:
1. Fouled spark plugs.
2. 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.
3. 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.
4. Loose connection at ignition coil or plug between ignition sensor and module.
5. Spark plug cables in bad condition, shorting/leaking, spark plug cable connections loose check for spark leakage in the dark.
6. Faulty ignition coil or electronic control module.
7. Faulty pulse coil.
8. Faulty CKP, CMP, or BAS sensor.
9. Faulty ignition switch.
10. Faulty run/off switch
11. Tilt sensor needs a reset.
12. Security alarm failing to disarm needs reset
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
86 shadow VT1100 No spark all of sudden
How to diagnose no spark situation on motorcycle
Honda shadow vt1100 Owners Workshop Manual
https://www.partsfish.com/page/oem-parts-for-honda
Honda Shadow VT1100 Owner Manual

Jan 24, 2018 | 1986 Honda VT 1100 C

1 Answer

Vt1100 running on one cylinder? Why


Hi, Anonymous and the usual suspects are:
1. Fouled spark plugs.
2. 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.
3. 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.
4. Loose connection at ignition coil or plug between ignition sensor and module.
5. Spark plug cables in bad condition, shorting/leaking, spark plug cable connections loose check for spark leakage in the dark.
6. Faulty ignition coil or electronic control module.
7. Faulty CKP, CMP, or BAS sensor.
8. Faulty ignition switch.
9. Tilt sensor needs a reset.
10. Security alarm failing to disarm needs reset
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.
1985 vt1100 not running on one cylinder
Running on one cylinder HELP Shadowriders
Honda shadow vt1100 Owners Workshop Manual
http://www.partsfish.com/page/oem-parts-for-honda
Honda Shadow VT1100 Owner Manual

Jun 23, 2012 | Honda VT 1100 C Shadow Spirit Motorcycles

3 Answers

No spark to rear cylinders runs good and then runs on one cylinder 1986 honda shadow 1100


try switching the position of the two coils, the plug wires will unscrew off of the coils and that way you dont have to pull the spark plug wires too,(be sure and change the 2 wire couplers too) if your front cylinder stops firing you know its the coil, if the back cylinder still doesn't fire then your coil is good and you either have a bad #2 spark unit or a bad crank pulse generator.

Aug 05, 2011 | 1998 Honda VT 1100 C Shadow Spirit

2 Answers

Only running on rear cylinder.


Hello,
Your bike needs three thing to run.

  • Spark
  • Compression
  • Fuel

The first thing to check is the spark on the front cylinder. You should remove the front spark plug and then put it back in the plug wire. Make sure that the spark plug is grounded by placing the threaded portion on the cylinder head fins. Now you can crank the engine over and watch for spark. If it does not spark you have an ignition problem, replace the plug with a new one and try again.

The next step is to check the compression. You will need a compression tester with the proper adaptor to thread into the spark plug hole. Remove the rear spark plug wire. Once the compression tester is installed crank the motor over with the throttle all the way open. Your compression should read at least 150 psi. If the compression is very low you need to have the motor dissasembled for inspection.

The last and most common problem is the carburator. If the bike has been sitting the carburator can become gummed up and prevent fuel from getting to the cylinder. The only fix for this is to remove the carburator and clean or rebuild as needed. This is very detailed work and should be performed by a qualified technician.

Thanks and I hope that this helps.
Steve

Jan 26, 2011 | 1995 Suzuki VS 800 Intruder

8 Answers

1986 Honda Shadow vt1100 does not start.


I don't know if this will help but just for GP the 85/86 Shadow are famous for electrical problems. If it is damp and you havn't cleaned the plugs not spark plugs the connector plugs on the wire harness it may have some buildup of that green stuff like a car battery does some time. On mine I ended up changing the coils and the electric fuel pump. You may have a problem with your stator also. Well this is just stuff I would check if it were mine. I got an 86 that runs as good as any of the new bikes that my friends have and just as fast. I hope this helped some.

Apr 10, 2009 | 1986 Honda VT 1100 C

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

131 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honda Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4736 Answers

yadayada
yadayada

Level 3 Expert

78267 Answers

bazzz7071
bazzz7071

Level 2 Expert

342 Answers

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

Answer questions

Manuals & User Guides

Loading...