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50cc apache quad spark problems

Have changed over, spark plug,coil,rectifier,relays,pulled apart every wire and put back with no corrosion,but quad has a mind of its own with the spark,1 minute it may run for a while the next no spark,im very puzzled.HELP!!!!

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Could be the CDI. Check the stator and pickup coil specs with a multimeter first.

Posted on Nov 17, 2013

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No spark at the plug on apache RLX 250 any advice please many thanks


Hi, Anonymous 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
Good luck and have a wonderful day.

Jul 04, 2017 | ATVs

1 Answer

Yamaha breeze 125 wont start.have checked spark plug & cleaned carb.My son got it bogged down pretty good in a mud & after we got it out it wouldnt start.What else could be the problem?


Have you checked for spark? That's where you need to go to first. Take out the plug, put it back on the plug wire and hold it against the cylinder head. Kick over the motor and watch for spark.

May 31, 2014 | RTO Quads 125cc Full Size Adult 4 Wheelers...

1 Answer

Apache quad rlx250 ax


just guessing that you have already changed the spark plug??!! Handlebar on/off switch in the on position? (yes, I have seen this come to the shop). After this you need a shop manual to check wiring connections, resistance values..etc.. if not... might be shop time.

Mar 28, 2014 | ATVs

1 Answer

Engine missing in gear


Check your Air Filter, clean it out, check for obvious blockages. Change the filter if it looks well used (look for excessive dust or color change on the inner part of the filter) or obvious wear.
Check for other blockages around the air filter inlet.

Check the spark plug, just change it for a new one so that eliminates that possibly.

Check your fuel filter and replace if needed.
Check the fuel tank for corrosion or dirt in the fuel. Empty it out, Clean it and add new fuel, be sure you have the correct fuel.
Check your Air / Fuel mix adjustment screws on the carburetor.

Hope that helps a bit
Good Luck

Feb 09, 2014 | Honda 2006 TRX 250EX

1 Answer

Apache quad


what kind of a small noise? Describe? Is it a click, or a slight fizzle sound? If it is a fizzle sound, make sure none of the earth wires have come off the battery, or poor earth grounding. If it is a click, it could be the start relay/ignition coil. I dont have the model ATV you have, but mine has a small retangled black box, smaller than a pack of matches, if you follow the wires from your ignition coil. hold that and start and feel a click. The relay will send current to your starter. No click, no start. So check the ignitiion coil. Another problem can be a starter continual trying to run - which is a sticky relay.
They are simple things, spark, and fuel, and they run. I think you are having the same problem as I did.. someone before me fitted a kill switch and one of the wires came off the earth there, and it wouldnt start. Mine was under my seat, but it's a chinese quad, so just folllow the wires to the battery and from the battery until it meets the chassis.

Nov 25, 2013 | ATVs

1 Answer

Wiring problem. Won't turn over. Can't get wiring right. Suzuki quad runner 250 1999. Had some toggle switches. Rectifier burn up. Bought new one


start looking for a full harness fo replace it with thats just a mess and will only lead to problems down the road

Jan 30, 2013 | ATVs

1 Answer

Just bought a apache quad 110cc with no ignition barrel ,but need a ignition diagram for the colour of the wires to the ignition .can any one help.


Go to easyquad parts technical help and you can download a wiring diagram for apache 100, this should be the same as what you need.

Aug 26, 2011 | RTO 125cc Full Size Adult Quad ATV

6 Answers

ATV will pull start but won't electric start? It just clicks...already replaced solenoid.


sounds like a dead battery, if not than its probably the rectifire. if you need me to help i can.

Jul 18, 2009 | RTO 125cc Full Size Adult Quad ATV

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