Question about 2008 Suzuki RMZ450

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My 2008 rmz 450 kick starts no problem then about 5 seconds later it immediately dies, like you hit the kill switch...just started this yesterday any help will be greatly appreciated

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Try simple option first like change the spark plug as plugs can fail under load and cause this? if no improvement then I would get a multi meter and test resistance readings on your stator connection leads and also check resistance on your ignition coil pack - Your service manual will have the range of in spec readings for you to check against
This symptom sounds almost guaranteed to be electrical fault - best case new spark plug or worse case new stator or ignition coil required any auto ranging OHMS meter will give you enough information to know if stator needs replacing as your readings will be way out of spec on one or all of the sources
good luck regards Jamie

Posted on Jun 25, 2011

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Hi there,
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Posted on Jan 02, 2017

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1 Answer

2008 Suzuki RM-Z 450 dies suddenly


Hi, Aaron and the usual suspects are:
1. 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.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, stator, magneto, ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Faulty neutral, side stand or clutch lever safety switch.
10. Faulty or corroded kill switch.
11. Accelerator pump damaged or not working.
12. Water or dirt in the fuel system, carburetor or filter.
13. Restricted, blocked or kinked fuel line.
14. Fuel tank empty.
15. The gas cap is not venting properly or fuel tank venting system blocked, loosen gas cap and go for a test ride.
16. A failed fuel pump, pressure regulator and or fuel injectors.
17. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
18. Needle and seat stuck closed in the float bowl.
19. Petcock clogged or damaged.
20. Lean angle switch is faulty or needs adjustment.
21. Catastrophic engine failure, perform a compression test.
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.
after take the choke off it dies
Bike dies when you give it throttle
http://supermoto.by/article/45/Suzuki_Rmz450_Service_Manual_Repair_2009.pdf
https://www.partsfish.com/page/oem-parts-for-suzuki
http://mybikemanuals.com/suzuki

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

May 26, 2018 | 2012 Suzuki RM-Z 450

1 Answer

2010 Suzuki RMZ 450 hard to start


Hi, Brett and the usual suspects are:
1. Spark plugs in bad condition or have an improper gap or are partially fouled.
2. Spark plug cables in bad condition.
3. Battery damaged or nearly discharged, should have 12.5 volts.
4. 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.
5. Throttle controls not adjusted correctly.
6. Water or dirt in the fuel system.
7. Water or dirt in the carburetor.
8. Intake air leak.
9. Fuel tank vent hose and vapor valve plugged, or fuel line closed off, restricting fuel flow.
10. Choke valve inoperative.
11. Engine lubricant to heavy (winter operation).
12. Ignition is not functioning properly (possible sensor failure).
13. Faulty ignition coil.
14. Valves sticking.
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.
2010 rmz hard to start
The trick to starting 08 rmz450
2010 RMX 450 hard to start
Suzuki RM z450 Owner Service Manual
https://www.partsfish.com/page/oem-parts-for-suzuki
http://mybikemanuals.com/suzuki

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Nov 21, 2017 | 2010 Suzuki RMZ 450

1 Answer

My ktm 450exc o3/04 model jst died ,went for a ride because it sat for a while ,came back hit the kill switch and noow no spark!


Take the kill switch off and see if it starts. The killswitch may be permanently earthing the ignition.

Dec 31, 2012 | 2004 KTM EXC 450 Racing

1 Answer

2011 ktm250 sxf wont start


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2 Answers

Are there timing issues with the 2006 rmz 450? I replaced the valves, (bent from timing) cam timing chain, oil and oil filiter. When I try to start it it backfires but will start... Once it gets hot and...


have u tried turning the engine over slow for about three to four turns with the kick starter then kick it once or twice hard ..it should start...dont give it any throttle...floods easy

Oct 09, 2010 | 2005 Suzuki RM-Z 450

1 Answer

Doesn't always start, dies as I'm driving


sounds like you need a new fuel pump.

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1 Answer

Engine dying


Check your kick stand sensor if it's unplugged then there is your problem. If it's still plugged in then the sensor might be gone. The sensor shuts the bike down if you try to take off when the kick stand is down. you can bypass the sensor by jumping the two wires before the sensor with a piece of wire connecting the two leads together. doing so will allow the bike to be put into gear with the kick stand down so always check it so you won't have an accident.

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