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I have a 1981 gs450 Suzuki, can I bypass the igniter ? I've got no spark to the plugs

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6ya6ya
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Posted on Jan 02, 2017

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ollie reece
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SOURCE: My 1981 Suzuki GS1000G has no spark on 3 of the 4 cylinders

cdi unit get the manufacturers to test the cdi out and get back to me

Posted on Sep 28, 2009

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1 Answer

I have a 1981 suzuki 1100 that wont start (no spark)


Hi, John and the usual suspects are:
1. Fouled spark plugs.
2. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
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 links below. Good luck and have a nice day.
How to diagnose no spark situation on motorcycle
Suzuki Service Repair Manual Download
OEM parts for Suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

Sep 13, 2016 | Suzuki Motorcycles

1 Answer

1981 GS650L, engine starts, idles, but has almost no power when trying to ride?


Hi, James and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
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. Spark plugs in bad condition or partially fouled.
4. Spark plug cables in bad condition and leaking.
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
8. Faulty CKP or CMP, MAP, ETS, ATS, TPS, O2 sensor.
9. Intake air leak.
10. Water, dirt, or rust in the fuel system, carburetor and/or filter.
11. Fuel tank vent system plugged or carburetor vent line closed off.
12. Vacuum line from intake manifold to fuel valve is broken, cracked, pinched, or missing.
13. Carburetor controls misadjusted.
14. Damaged carburetor.
15. Incorrect valve timing.
16. Weak or broken valve springs.
17. Damaged intake or exhaust valve.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
Common Motorcycle Power Loss Causes Checklist
http://www.carlsalter.com/pdfs/Suzuki_GS750.pdf free
Suzuki GS500E Service Manual free
Suzuki GS650 Motorcycle 1981 1983 Service Repair Manual $37
OEM parts for Suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

Jul 15, 2016 | Suzuki Motorcycles

1 Answer

What's your question? FIx CDI Box that give spark to the plug on a Suzuki GN 400 1981


  1. 1981 Suzuki GN 400 L specifications and pictures - Bikez.com

    www.bikez.com/motorcycles/suzuki_gn_400_l_1981.php The 1981 Suzuki GN 400 L and all other motorcycles made since 1970.Specifications. Pictures. Ratings. Discussions.

Jun 21, 2015 | Suzuki Motorcycles

1 Answer

1981 Suzuki gn400 no spark


I know it sounds silly, but have you checked your earth or ground wiring. If not earthed this type of problem can occur. Did the bike run before you replaced your coil etc? You could have a crook CDI
are you using multi meter mate for correct voltage readings?

Feb 09, 2014 | Suzuki Motorcycles

1 Answer

1981 suzuki gs750l low spark but all spark get one big blue spark then small weak spark


Yep, that is alright as the weak spark is a wasted spark. It should goes on each ignition cable a STRONG then WEAK sparks. It is just fine in your ignition.
If you find this advise helpful then rate it please. thanks

Dec 09, 2010 | 1981 Suzuki GS 750 L

1 Answer

1980 Suzuki GS450, jump started my bike and now no spark, I blew the main fuzz, replaced it but still now spark, could the Igniter have gone bad or other ignition related problem be why it has no spark, I...


It is OK to jump start your motorcycle from a car battery as long as you do not crank the starter too long (it will burn the armature) and as long as the car/other vehicle is not running when you jump start your bike ( you can damage your electrical components( igniter box)). See if you can exchange one with a friend to see if that is the bad component.

Nov 08, 2010 | 1980 Suzuki Gs 550 L

3 Answers

Suzuki gp 125 1981 dont want to start


Make sure you have ignition spark and just wer yhe tip of the plug with gas. Puttting gas in the cylinder is too rich and will add to you problem. Good Luck

May 28, 2010 | 2003 Suzuki RM 125

1 Answer

1981 550 suzuki one cyclinder is dead has spark and fuel and bike runs but start extremly hard seems cold blooded


Check compression of cylinders, all should be close the same. Swap spark plugs and check if problem cylinder moved. If bike sits for long periods of time then most likely it will be a plugged carburetor.

May 20, 2010 | 1984 Suzuki Gs 550 L

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