Question about 1980 Suzuki GS 750 L

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1979 Suzuki GS750 won't start. new plugs, only getting spark with 3 at of 4. Does anyone know what might be the problem?

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HI THATS ODD TO HAVE 3 SPARKING, AS THE IGNITION COILS ON THE OLD GS WERE 1COIL FOR 2 CYLINDERS IE 1&4 CYLINDERS USED 1 COIL AND 2&3 USED THE OTHER , SO IF YOU ARE GETTING A SPARK AT EITHER OF THESE THAT MEANS THE COIL IS WORKING, ON THE COIL THAT IS ONLY GIVING A SPARK AT 1 PLUG SWAP THE PLUG OVER AND SEE IF IT THEN SPARKS IN THE OTHER CAP THIS WILL ELIMINATE THE PLUG, IF THE PLUG THAT WAS SPARKING IN THE OTHER LEAD NO LONGER SPARKS IN THE OPPOSIT LEAD THEN OBSERVE THE LEAD REMOVE THE CAP AND EARTH THIS OUT WHILE YOU TURN OVER THE ENGINE, THIS WILL ELIMINATE THE CAP,

Posted on Aug 31, 2010

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After i took out the batterie to take off carbs to clean them the starter wont work or the horn


Hi, Chuck and the usual suspects are:
1. Ignition Switch not in the "ON" position.
2. Engine Run Switch in the "OFF" position.
3. Discharged battery, needs to be 12.5 volts or better and be able to pass a load test if necessary, 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. Bank angle sensor tripped and ignition/light key switch not cycled to the "OFF" position and then back to the "ON" position.
5. Faulty starter button/switch.
6. Faulty kickstand or clutch pull in switch/sensor.
7. Security alarm needs a reset.
8. Starter control circuit, relay, or solenoid faulty.
9. Main fuse or circuit breaker may be blown or faulty.
10. Electric starter shaft pinion gear is not engaging or over-running starter clutch slipping.
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.
http://www.thegsresources.com/_forum/showthread.php?231947-GS750-won-t-turn-over-battery-is-charged-Nothing-from-starter-button-or-kick/page3
http://www.xs11.com/forum/showthread.php?t=41364
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May 18, 2016 | 1979 Suzuki GS 750 E

1 Answer

1979 Suzuki GS750 vacuum line routing


Hi, Anonymous for this scenario you will need your service, parts fiche, and owners manual if you can't find the best tool you ever bought for your Suzuki, despair not, for a mere zero $0 you can download another one. 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.
1979 Suzuki GS750 vacuum line routing Google Search
https://groups.google.com/forum/#!topic/rec.motorcycles.tech/1H9LxFY224g
http://www.vanluik.eu/Suzuki%20GS750%20Service%20Manual.pdf
OEM parts for Suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

Aug 30, 2013 | 1978 Suzuki GS 750 E

1 Answer

What is the number of the left coil pack on 79 suzuki 750gs


Not exactly sure what you mean by "number" but i purchased two new ignition coils and my 1978 gs750 runs like its fresh from the factory. here is the link where i purchased them.
http://www.regulatorrectifier.com/catalog/1977-1978-Suzuki-GS750-GS-750-Ignition-Coil

Apr 07, 2013 | 1979 Suzuki GS 750 E

1 Answer

1979 Suzuki GS1000, cylinders 2 & 3 are not firing


Hi, Anonymous you need "FIVE" things in order for a cylinder to run properly:
1. FUEL: in order to validate your not getting fuel spray some starting fluid into the air cleaner and hit the starter button, if it fires up and runs for a few seconds then you know you have a fuel delivery issue. Multi carb banks should be bench "SYNC"
2. SPARK: remove the spark plug and with it connected to the spark plug cable ground the threads to something metal you should see a bluish white spark if not you have a faulty spark plug, spark plug cable, ignition coil, condenser, CKP, ECM, sensor or the wiring in between.
3. COMPRESSION: you must have at least 80-100 PSI for most bikes, multi-cylinder engines should be within 10-15% of each other if not perform a leak down test you may have a burnt or bent valve or hole in the piston or broken rings.
4. CAM TIMING: confirm your timing marks are aligned to see if the cam chain or adjuster are worn out and the chain has skipped a couple teeth.
5. IGNITION TIMING: on older bikes check to see if your points have not closed up, timing plate has not become loose and confirm with a timing light for proper retard and advance functions, on newer bikes where timing is controlled by an ECM and is nonadjustable check you CKP, TPS, MAP, O2, sensor or its counterpart for integrity.
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.
1978 Suzuki GS550 Cylinder Not Firing Tech Corner Motorcycle Classics
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Jun 15, 2012 | 1979 Suzuki GS 750 E

1 Answer

I have a 1979 Suzuki GS750 and it fires great on 3 of the 4 cylinders, but not the 4th.


Hi I had the same problem with my gs it was valve clearance they were to tight

May 02, 2012 | 1979 Suzuki GS 750 E

1 Answer

1978 Suzuki GS 750 E no spark


Hi, Bobsallthing 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.
http://www.thegsresources.com/_forum/showthread.php?133966-77-GS750-No-Spark-Coil-amp-Condenser-Test
How to diagnose no spark situation on motorcycle
http://www.vanluik.eu/Suzuki%20GS750%20Service%20Manual.pdf
OEM parts for Suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

Mar 21, 2011 | 1978 Suzuki GS 750 E

2 Answers

Where can I purchase new or used carbs for a 1979 suzuki 750 gs?


Theres a set on ebay right now bud
http://cgi.ebay.com/ebaymotors/77-SUZUKI-GS-750-GS750-GOOD-SET-OF-CARBURETORS-CARBS_W0QQcmdZViewItemQQhashZitem3a59c70406QQitemZ250614318086QQptZMotorcyclesQ5fPartsQ5fAccessories

Item number 250614318086

Apr 17, 2010 | 1979 Suzuki GS 750 E

1 Answer

The fire order on a 82 Suzuki GS750 t


You only have 2 coils on this bike. It uses the wasted spark system. One coil will fire 1&4 the other will fire 2&3. You will see 2 HT cables from each coil. Try the left coil on 1&4 and right coil on 2&3. If it does not start try right coil on 1&4 and left coil on 2&3

Jul 22, 2009 | 1981 Suzuki GS 750 L

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