Question about 1979 Suzuki Gs 550 L

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I have a 1979 GS 550 L with weak to no spark on cyclinders 2 & 3 at idle and spark is good above 4000 rpm. 10.5 volts coming in at the power wire and battery is new with 12.5 volts. Bad coil?

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  • pschoch Nov 21, 2010

    ignitor problem, coils tested good down to 1,000 rpm. weak spark bounces between coils and it's time to double check all powers and grounds. proceeding with jumper wires as needed before condemming the ignitor

  • pschoch Dec 01, 2010

    solved, stater weak, low voltage at idle, replaced stater and bike is back on the road

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  • Contributor
  • 47 Answers

Bad charging should be getting 13 plus volts check magneto wires possible reg rec fault.

Posted on Dec 27, 2014

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Posted on Jan 02, 2017

  • 221 Answers

SOURCE: 1980 gs 550 l no spark ..I was told to relace ignition module

yes

Posted on Jul 24, 2009

  • 143 Answers

SOURCE: spits sptutters at low rpm comes and goes

car

Posted on Sep 20, 2009

scottrenfro
  • 1 Answer

SOURCE: My 98 Suzuki VL1500 has a weak spark to the rear

check your carbs. it might be dumping to much gas in that cylinder, causing the plug to fowl out and have a weak spark. make sure the carbs are adjusted and then sync them for proper fuel air mixture.

Posted on Jun 05, 2010

  • 17 Answers

SOURCE: I Have A Suziki Gs 550 I Put New Coils And It

i have had this problem on a suzuki try finding the ballast resistor under seat it is like a porcelain piece for your electricals

Posted on Aug 01, 2010

  • 29 Answers

SOURCE: 1981 550 suzuki one cyclinder is dead has spark an...

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.

Posted on Sep 22, 2010

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Hi I have a 1978 Suzuki GS 550 how do I check the charging system?


Hi, Israel before testing any electrical component in the Charging System it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test because your battery may have 12.5 volts or more but little or zero amperage and must be replaced AGM types more so than lead acid batteries.
1. Battery Test: The battery needs to be a fully charged and load tested to ensure proper readings, connections need to be clean and tight. If you are not working with a fully charged and functional battery, all other voltage tests will be incorrect. Standing battery Voltage should be 12.5-13.2 DCV.
2. Charging System Voltage Test: Start motorcycle, measure DC volts across the battery terminals you should have a reading of approximately 13.2-15 DC Volts.
3. Check Connections/Wires: Inspect the regulator/stator plug, and check the battery terminals for connection/corrosion. If everything seems to be in order, move on to number 4 below to determine if there's a failed component.
4. Stator Checks/Rotor Check: Each of the following tests isolates the Stator & Rotor. If AC Output test Fails and Resistance Check, and Stator IB Test Pass then Rotor is at fault (Pull Primary covers and inspect rotor for damage).
5. AC Output Check:
Unplug the regulator plug from the stator
Start motorcycle and change Voltmeter to AC volts.
Probe both stator wires with your meter lead.
The motorcycle should be putting out approximately 18-20 ACV per 1,000 rpm. Reading will vary depending on system, check service manual specification
Generic Specs:
22 amp system produces about 19-26 VAC per 1,000 rpm
32 amp system produces about 16-20 VAC per 1,000 rpm
45 amp system produces about 19-26 VAC per 1,000 rpm
Stator Resistance Check:
Switch your multimeter to Ohm x 1 scale.
Probe each stator wires with meter leads and check resistance on the meter.
Resistance should be in the range of 0.1-0.5 Ohms. Reading will vary depending on system, check service manual for specification
Generic Specs:
22 amp system produces about 0.2 to 0.4 ohms
32 amp system produces about 0.1 to 0.2 ohms
45 amp system produces about 0.1 to 0.2 ohms
Stator IB test or Ground Check:
Switch your multimeter to Ohm x 1 scale.
Probe each stator wire with your positive lead on the multimeter and the negative to ground.
There should be no continuity to ground on either wire.
If there is continuity to ground your stator is shorted to ground.
5. Regulator Test: Each of the following tests isolates the regulator only, so if any of these tests fail, the regulator is at fault.
Identifying Wires:
Battery Charge Lead- Wire going from regulator to battery positive.
AC output leads- Wires coming from the Stator to the regulator.
Ground- Wire from Regulator to ground or regulator may be grounded via the physical bolting to chassis.
Regulator Ground Test: Ensure the regulator body is grounded or grounding wire is fastened tightly to a good ground (you should verify this by checking continuity from regulator body to chassis ground).
Fwd/Reverse Bias Test/Diode Test: This check is testing the Diode function to ensure it is regulating the AC current for the stator into DC Current.
Switch multimeter to Diode Scale.
Place your Multimeter positive lead on each AC output wire.
Place your multimeter negative lead on the battery Charge wire.
The meter should read voltage typically around .5 volts.
Next, switch your multimeter leads putting the negative lead on the AC output wires and the Positive lead on the Battery Charge Wire.
The reading should be Infinite.
With your meter on the same setting, place your multimeter positive lead on the regulator ground wire or to the regulator directly, and then place your meter negative lead on the AC output leads.
The meter should read voltage typically around .5 volts.
Next, switch your multimeter leads putting the negative lead on the regulator ground and the Positive lead on the AC output wires.
The reading should be Infinite.
Note: Below is a table to show the readings:
Positive Lead Negative Lead Reading
AC output 1 Battery charge lead Voltage
AC output 2 Battery Charge Lead Voltage
Battery charge lead AC output 1 ?
Battery charge lead AC output 2 ?
Ground AC output 1 Voltage
Ground AC output 2 Voltage
AC output 1 Ground ?
AC output 2 Ground ?
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.
Your Suzuki GS750 Charging System kendoll net
Thread 81 GS550 charging problems
Suzuki GS550 Service Manual
OEM parts for Suzuki
Suzuki GS500 Owner Manual

Apr 13, 2017 | 1979 Suzuki Gs 550 L

1 Answer

I've just bought a 2002 r6 it's not been used for about a year owner told me to get it serviced it revs up great but when driving has no power over 4000 rpm


Hi, Stephen if your bike has been sitting idle for months or years and you did not do any pre-storage maintenance I feel your pain it will probably have a dead battery and not want to start or if it starts it will idle and run poorly, here are the following steps necessary to complete in order to get your bike back to an acceptable running condition.
1. If your battery was 2-3 years old when you last had the bike running you should replace it.
2. If you believe your battery might still be serviceable remove it from the bike and put it on a 1 or 2 amp trickle charger for 24 hours. If it is the old lead acid type with visible cells and acid levels fill each cell to the top line with distilled water and replace the caps, run the vent tube into a plastic or styrofoam cup, any cells that are cloudy/milky replace the battery.
3. After charging remove the leads and let the battery sit for a couple of hours then check the battery voltage with a volt meter, you should have 12.5 volts or better, any readings in the 11 volt range you need to do a proper load test on the battery and replace as necessary, any readings in the 10 volt range you have a dead cell and replace the battery.
4. Drain and flush fuel tank, google " how to clean a motorcycle gas tank" find a couple forums to view the different options available.
5. Remove your air cleaner and clean and re-oil per Mfg. specifications.
6. Remove the carburetor, disassemble and decontaminate with a carb dip or if you have EFI remove injectors and clean with carb spray and compressed air
7. Remove fuel valve and filter disassemble and clean as necessary, remove fuel lines and replace with new ones.
8. Replace spark plug with a new one and check for spark.
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.
Bike wont go over 3000 4000 rpms
http://www.r6-forum.com/forums/57-garage-mechanical-help/207210-r6-dies-4000-rpm.html
Misfire Chug on take off
http://www.r6messagenet.com/forums/pdf/99-02R6_Service_Manual.pdf

May 28, 2016 | Power Motorcycles

1 Answer

Whats the valve clearance for my Diahatsu Mira 1998 850cc?


Mira 847 cc 1993- Engine Code ED 10
Ignition data
  • Ignition system type: El-ecu
  • Ignition coil make/type: Dia/-
  • Supply voltage: 12 + Volts with ballast resistor
  • Primary resistance: 1.35-1.65 Ohms
  • Secondary resistance: 22000-30000 Ohms
  • Distributor make/type: Den/-
  • Contact breaker gap/air: 0.2-0.4 mm
  • Dwell angle: Deg\par Ignition Timing - unleaded: 5 2/900 Deg eng/rpm (without vacuum)
  • Ignition Timing - leaded: Deg eng/rpm (without vacuum)
  • Timing mark location: Flywheel
  • No 1 plug location: Pulley
  • Firing Order: 1-2-3
  • Spark plug make: Bosch
  • Spark plug type: WR6DC
  • Electrode gap: 0.7-0.8 mm
Fuel System
  • Fuel type: U/L
  • Fuel pump type/pressure: bar
  • Engine idle speed: 900+100/-50 rpm
  • Fast idle speed: 2000 rpm
  • CO level at idle speed: 1.0
  • 0.5 Vol %
Engine Data
  • Valve clearance - inlet: 0.25 mm (hot)
  • Valve clearance - exhaust: 0.30 (hot)
  • Compression pressure: 1.2-1.5 bar
  • Oil pressure: 2.5-5.6/3000 bar/eng/rpm
  • Radiator pressure cap: 0.6-1.05 bar/type
  • Drive belt 1 - size: 9.5x925/KDB 925 mm/type
  • Drive belt 2 - size: mm/type
Electrical System
  • Alternator output: 10/2500 Amps/eng/rpm
  • Regulated output: 14.2-14.8 Volts
  • Battery: 12/35 V/Ah
  • Starter motor make/type: Den/-
Other data
  • Clutch operation type: Cable
  • Clutch adjustment: 10-30 mm
  • Cambelt failure: Damage
  • Cambelt Part Number: 13514-87211
  • Tyre pressures: 1.8(26)f 1.8(26)r bar (psi)
  • it took me 3 seconds to google this then i realized that this is a older engine then yours

Oct 30, 2014 | 1996 Daihatsu Mira

1 Answer

1979 gsx 550 suzuki gas isnt going to plugs


CK FLOAT AND NEEDLE VALVE IN CARBS SOUNDS LIKE THEY NEED TO BE CLEANED AND ADJUSTED.

Apr 22, 2014 | 1979 Suzuki Gs 550 L

1 Answer

How do i wire the coils on my 78 suzuki gs 750. spark plug order which spark plug wire goes where??


There are 2 coils. The coil on the left provides spark for cylinders 1 & 4. The coil on the right provides spark for cylinders 2 & 3. The firing order is 1-2-4-3.
In case you don't know, this little tidbit is something to carry with you for life: Whenever a reference is made to a place in or on a vehicle, it is ALWAYS the perspective "from-left-to-right" of the seated vehicle operator.
In other words, in your case, as you're sitting on the bike, cylinder #1 is the one furthest to your left, and #4 is furthest to your right.

Feb 23, 2014 | 1979 Suzuki GS 750 E

2 Answers

I have a 1980 Suzuki GS 550 L as my winter project. First thing I did was clean tank out and kreem it with tank liner. Then rebuild the carburetors top and bottom end of the carbs. I soaked the jets in...


Please take out your spark plugs and check their electrode condition. If they are black then you have a very rich mixture. That could be a faulty ignition spark (weak) or clogged airway in the air filter housing. Also check the carb's needles if they are adjustable in height, pute them in the middle scale. I believe when you were cleaning the carbs, you took out the pilot screw and the idle jet and cleaned that circuit thoroughly.
If they are white then your mixture is lean (probably your intake system sucks extra air from the intake collars where you plug the carbs on to the cylinder head or from the collars that connects the carbs to the air filter housing)

Feb 02, 2012 | 1980 Suzuki Gs 550 L

1 Answer

Carb settings


U will have 2 screws mixture n idle on d side of it from all the way in loosen d mixture out 2n1/2 turns idle bike n adjust idle til it smoothly idles

Jul 22, 2011 | 1979 Suzuki Gs 550 L

1 Answer

Code p1128 weak mixture lose power on inclines engine light on melts spark plugs vehicle hyundia accent 2001


Go to www.hmaservice.com and register your vehicle by VIN #..
you'll then have access to wiring diagrams, shop manuals,
service bulletins, illustrations, etc. To diagnose a 2000 or 2001 1.5L Accent Diagnostic Trouble Code (DTC) P1128 (FUEL SYSTEM LEAN -- PART LOAD), check the following:
  • Check the intake system for air leaks.
  • Check that the Mass Air Flow (MAF) Sensor (P/N 28164-22610) operation meets the specifications listed below. If the MAF sensor output is significantly lower than the reference value (10% or more), then replace the MAF sensor.
Table 1: Using the Hi-Scan Pro in the Hyundai Diagnostic Menus Current Data Screen TPS (%) 0
3.5
5.1
7.4
MAF (kg/h) 10
21
30
47
RPM IDLE
2000
3000
4000
Table 2: Using the Hi-Scan Pro in the OBD-II Menus Current Data Screen TPS (%) 0
3.5
5.1
7.4
MAF (g/h) 2.8
6
8.5
12.7
RPM IDLE
2000
3000
4000


WITH MANUAL TRANSMISSION


Table 3: Using the Hi-Scan Pro in the Hyundai Diagnostic Menus Current Data Screen TPS (%) 0
2.4
3.9
5.9
MAF (kg/h) 9.5
19.4
28.8
43
RPM IDLE
2000
3000
4000
Table 4: Using the Hi-Scan Pro in the OBD-II Menus Current Data Screen TPS (%) 0
2.4
3.9
5.9
MAF (g/h) 2.5
5.5
8
12
RPM IDLE
2000
3000
4000

Jun 26, 2011 | Hyundai Accent Cars & Trucks

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

2 Answers

Proper idle speed (r.p.m.'s)?


I dont know for sure but 1200 rpm is most common.

Mar 04, 2010 | 1979 Suzuki Gs 550 L

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