Question about 1984 Suzuki GSX 550 EF

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Hi folks, i own a suzuki gsx550ef in need of an igniter module (cdi unit),,can't find one used anywhere,but i do have 2 spare units from the gsx400 twin which has the same pick ups and wiring,,,could one of these be the answer or could i do some harm trying it out..outwardly they look to be the same unit with just a slightly different serial number... many thanks if you can help.............john

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Have you tried bikebandit.com

Posted on Aug 24, 2010

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1988 Suzuki GSX 600 F no spark


Hi, Thortonroof 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.
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Need to replace ignition on a Suzuki Burgman 400 where and how much goes a new ignition cost


A new CDi unit cost appox £390...............Why do you think that maybe the problem?
Easy to get too..remove the parcel/helmet box under seat 4 screws & 4 plastic fastners (push centre inwards & pull out) lift from the rear & pull back wards.CDi unit is on the off side with 2 block connecter going in............................Good luck Andy
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85 GS550 and the spark module or the spark igniter is bad. swapped the coils from right to left to verify the coils are both good, and they are. The pick up coils also swapped and they are good. I only get...


hi mate ,,i've got the same problem.<br /> i bought a basket case 550ef with no igniter unit(cdi) fitted,,turns out they're near impossible to find used,or stupidly priced...if i were you i'd go down the boyer bransden route because you don't have to buy the coils or pick ups you can get the igniter module seperately.hope this helps.........john..

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1 Answer

Need help with a suzuki drz 400e 2003 mod. After riding for the weekend decided to take spark plug out to change. Dirt fell down into head . I had a friend bike mechanic take head off to clean out dirt so...


Hi, Anonymous nice novella and the usual suspects are:
1. Fuel tank empty.
2. The fuel tank has old dead gas.
3. Fuel tank bottom contaminated with ethanol sludge, dirt, water, rust, etc.
4. Fuel supply valve/petcock turned off.
5. Fouled spark plugs.
6. Engine flooded as a result of overuse of the enrichner.
7. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
8. Fuel valve/petcock or filter clogged.
9. Fuel line to carburetor or throttle body pinched, kinked or blocked.
10. Carburetor float stuck.
11. Fuel injectors clogged.
12. A severely discharged or damaged battery, you need 12.5 volts or better and be able to pass a load test if necessary.
13. 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.
14. Loose or corroded wire connection at the coil or plug between ignition sensor and ECM module.
15. Spark plug cables in bad condition and shorting check for spark leakage in the dark, cable connections loose, or connected to the wrong cylinders.
16. Ignition timing incorrect due to a faulty ignition coil, ignition module or MAP, CMP, CKP, O2, TPS, ETP, IAC sensors.
17. Faulty neutral, clutch lever, or kickstand safety switch.
18. Faulty fuel pump or fuse or relay.
19. A stuck bent or burnt valve.
20. Tilt sensor needs a reset.
21. Security system not disarming alarm needs a reset.
22. Check for engine trouble codes.
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.
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1 Answer

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Hi and welcome to FixYa,

For a "no spark" problem with a Hyosung RX125, check:
  • temporarily disconnect the battery. With the engine on at both the ignition switch and engine kill switch, verify that the green wire to the CDI does not measure 0 ohms to ground;
  • if it does, check the ignition switch and the engine kill switch;
  • it it measures anywhere between 50 ~ 500 ohms, then reconnect the battery and check that there is +12 on the orange wire going to the CDI with ignition switch on;
  • for a pulsating voltage (high ACV) at the white / blue wire coming from the CDI going to the ignition coil;
  • for a pulsating voltage (low ACV, 0.5VAC) at the green wire coming from the pulser coil going to the CDI; and
  • of course, check if the CDI (black / white) is connected to the ground.
Postback results of tests.

Good luck and thank you for using FixYa.

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1 Answer

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Hi and welcome to FixYa,

On most Suzukis with fuel pump that I have worked on, the wiring would be:
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Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

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