Got a 2010 250 exc... my bike decided to just stop.workong after riding one day. Pull the cord, cord jams half way (or pulls back), no spark because the flywheel isn't spinning fast enough to produce electricity through the magneto (coil). 0 Kudos BluewaterBill. How do i get spark. All 50cc Piaggio and Gilera 2-stroke engines plus some geared 50cc (e.g. Air/fuel mixture incorrect: Idle air screw mis-set. took the old plug and gapped it about a quarter inch and not a spark. Because the ignition module is electronic and does not utilize moving components, it is normally one of the most reliable part of the engine. Admiral. I bypassed the kill switch thinking it may have corroded the kill switch, but still no spark. Post by Vitoow » Sun Dec 20, 2020 6:38 pm. Modern replacements are heavy and expensive. OK, thanks for the reassurance. Once you have confirmed that the stop switch is working, reconnect the spark plug lead. Went through and found I had no spark. no spark on Victa lawnmower 2 stroke? Rod October 2008: It sounds almost as if the position of the coil, in relation to the flywheel has been fractionally adjusted. I hit the stop button but nothing happened. I ordered a 49cc 2 stroke engine off of ebay about three weeks ago. I agree with tester, spark plug should be checked first, then the compression and or carb, the filters (air and fuel)...if you aren't getting a spark then the spark plug needs replacement have the dudes at your 2 stroke engine repair place show you the correct gap, how to clean the thingys that make the gap as they get gooed quickly, only use NO ETHANOL gas! The stator is relatively new about 4 months old. ... Answer: 2-stroke engines don't have a sump (reservoir) containing oil. Since then i have spent hours upon hours trying to get it to spark with no luck. The result will be an engine that performs badly, if it starts at all. That is I remove the plugs. as those of the spark ignition engine. Spark plug cap not in good contact with spark plug. I have no spark on my Victa corsair 2 stroke lawnmower. While moving up, it compresses the air-fuel mixture in the combustion chamber. I dunked my 57" Arrow Shark Fighter Cat and got it running again, but only for about 5 minutes then it died. I cranked her over, she sounded like she wanted too, shot a small spray of starting fluid in there and she fired right up, then had spark on all 6. and tried to start it but there was no spark. With no external signal to the coil negative primary post, voltage would travel through the ignition coil windings without inducing any secondary spark. Want Answer 0. High voltage is then generated in the coil windings. When the module and coil begin to fail, it's typically because the units have been burned out. Ill see how the big cooler lines up and if it looks awkward Ill just stick with the 600s. So I decided to do some preventative maintenance on my 20 hp Merc. If no spark you'll have to remove the blower housing and check the ground wire back to the coil, checking that it is not shorting along the way. On any other lawnmower this suggest that the flywheel key has sheared. What causes this? Strong Spark 4. Mercury 115 inline won't start, no spark. 97 Mercury 20 HP 2-stroke NO SPARK June 25th, 2018, 06:32 AM. Faulty or damaged coils will have weak or no output. If it sparks then it is the fixing at the control plate that is earthing out. Message 6 of 13 (27,138 Views) Reply. Re: Need help! I think there are problems with the ignition. The Flymos have no numbers. I am troubleshooting issues with my 2002 YZ125 tha was recently rebuilt. Had spark on all cylinders except 3 and 5. Just this weekend I was working on my '91 Kawasaki 550. thanks Posted by tony evans on Aug 24, 2013. 2 Stroke Trouble Shooting Guide; 2 Stroke Trouble Shooting Guide. I did. There are two different types of ignition and electrical systems on lawnmowers. The motor started and ran fine days before this. The engines then turn easily and the plug can be earthed to the cylinder and the starter rope pulled. It was running fine with the water hose attached when it started over revving. BUT on my 2 stroke Victa there is no flywheel key. No spark, no voltage going to the coil packs when cranking. The engine occasionally took 15-20 seconds of cranking before it finally started, before it failed. Testing for a spark. Registered: ‎07-14-2011. I have a 90 hp Yamaha 2 stroke .I replaced the cdi and i have no spark on cylinder 2&3 .I think the coils are bad #1 is firing so I switched coils and now no fire on 1.But I can take the 2&3 wires fro … read more Spark plug cap or high tension wiring faulty. Compression (around at least 90 PSI on a 2 stroke like yours) 2. 2 Stroke no spark help? CDI unit faulty. Ignition Coil. It's getting fuel, but no spark. Posts: 9,551. I disconnected tha battery, nothing. 8. Suzuki 2-Strokes: Gt550 1973. Often a faulty CDI unit will see intermittent or no spark on cylinders and may only breakdown when your engine warms up. Cleaned the carbs etc. Ignition Module Failure. With all those washers and things, it's not hard to connect the points wires in a way that they either short out or don't make a connection. Was running Awesome!! You may have to register before you can post: click the register link above to proceed. The remaining operations of the two stroke compression ignition engine are exactly the same. I disconnected the wires at the box, and checked spark at all 6 cylinders. Diagnosing no spark on a Lawnmower engine. The best option is to use a spark tester which plugs into the spark plug lead (instead of the plug) and is clipped to an earth point on the moped engine. Upward Stroke in 2 Stroke Spark Ignition Cycle: During upward stroke of a 2 stroke spark ignition cycle, the piston moves upward i.e. Typically, this problem happens when the contact points become worn, or more precisely when the contact point's heel becomes worn. There is no spark plug in this engine. To help you in your search, we have completed this list of the Best 2 Stroke Spark Plug. Click here to read more. Here is what I have done so far. I can't seem to find anybody that know how to hook up the two wires from the ignition coil, red and black. Your machine has to HAVE these things to Start and to Run 1. This problem can only happen on a 2-stroke because there are no valves to be operated in a set sequence, as in a 4-stroke engine. If there's no sign of a spark, try a new one or even a plug from a lawn mower (to test the ignition circuit is okay) before you attempt any more in depth troubleshooting. Engine stop switch stuck closed. They are very light and the 2 stroke engines run at high speed. If no spark appears, check for broken wires, shorts, grounds or a defective stop switch. A switch, or signaling device, triggers an interruption in the circuit. Clean Air 3. Crank, no start. Does this mower have a condenser? I have a 2 stroke geely that dont have any spark, I changed the coil and stator with another one and still no spark? Hello this is my first post so if i'm missing crucial information please let me know, I bought a GT500 awhile back and i finnaly got the time to try and fire it up. No spark; weak spark: Spark plug fouled, broken, or misgapped. Derbi) which use the same ignition. from the bottom dead center to the top dead center. i have a 2 stroke chainsaw motor on a little pocket bike i cleaned ALL connections and when i turn it over the wire will give me a pretty good shock if im up against the frame. 1. Our machines ran FINE without it and no small engine likes it. Two-stroke oils, which became available in the 1970s, are specifically designed to mix with petrol and be burnt with minimal unburnt oil or ash. I took off both spark plug cables and it continued to rev. 2 stroke engine.. no spark; If this is your first visit, be sure to check out the FAQ by clicking the link above. Other two-stroke engines might pump lubrication from a separate tank of two-stroke oil. Magneto damaged. Check power to the points as indicated by the previous posts. No spark. Still no spark on either plug. Loose wire connector. It is damaging and not necessary. GT500 no spark. The ignition coil or module for a two-stroke engine regulates the ignition power, and converts it to charging electricity for the battery system. I haven't started it it in over a year. No spark at all tends to indicate that the power is not getting to the points. can any one help? The engine will run clean sometimes and then sputters and backfires and quits. Having problems with your 2 stroke bicycle engine? In this two stroke engine, only air is compressed inside the cylinder. Receiving voltage from the CDI unit the coil will amplify voltage and shoot it through to the spark plug. Last weekend it would not start. I have a 2000 Yamaha 2 stroke that has run flawlesly since I bought it two years ago. I noticed a bunch of corrosion on the spark plug cables, so I decided to pull them and clean them. Engine turns over just fine. There is the battery driven and the engines without batteries. i am putting the NEW spark plug against the head,frame,and shock and nothing. The spark seems somewhat weak. Disconnected the kill switch to check for short. I’ve got a 2012 115 Yamaha four stroke. and the fuel (diesel) is injected by an injector fitted in the head of the cylinder. I have replaced the spark plug so its not the plug. The ethanol that is added to our gas nowadays is one of the biggest culprits. If this fails then there exists the possibility the ignition moduel is at fault. If you are pulling a start cord you don’t have a battery. The upward movement of the piston creates a partial vacuum in the crankcase. I have two 89 225 o.m.c sea drive i have no spark from the spark plugs and i did all i know how to do and to them Report Inappropriate Content. I swapped the coil and plugs out and still no spark! To start viewing messages, select the forum that you want to visit from the selection below. Top 10 Best 2 Stroke Spark Plug Hey guys first time poster here. Ignition coil faulty. Rest assure, by following this trouble shooting guide, ... No Spark: 4: Check blue and black wire connections coming from motor to the connections to CDI module. Any help will be much appreciated! This led to a marked reduction in spark plug fouling, which had previously been a problem in two-stroke engines. 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