Question about 2005 Yamaha TTR 90 E
I have a ttr 90 yamaha dirt bike it has electric start and i have no spark. my coil is good and i have power from the stator. all my fuses are good and all my wirers are conected right. any ideas?
Posted by Anonymous on
Test the stator those go in them quite a bit
Posted on Jan 01, 2017
Hi, Anonymous and the usual suspects are:
1. Fouled spark plugs.
2. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
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 CDI box.
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, pick up coil, trigger coil or CDI box testing needs to be checked with an ohmmeter at 70 degrees Fahrenheit
7. Faulty safety switches clutch, kickstand, neutral, off/on etc.
8. Faulty ignition switch.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
TTR 90 no spark very weak spark what else should do TTR
How to fix No Spark Problem on Motorcycles and Dirt Bikes
YAMAHA TTR90 Owner Service Manual
OEM parts for Yamaha
YAMAHA TT R50E Owner Manual
Posted on Jan 01, 2017
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Posted on Jan 02, 2017
check stator ac output 1st.check pulse coil next. find cdi box to try next.other possibles- ign coil, try unscrewing plug cap & trimming about 1/4" off coil wire. check spark w/ cap off. finally could be wiring.
Posted on Feb 16, 2009
SOURCE: Honda CRF150F will not start
ALWAYS have a fire extinguisher on hand when working on carburetors.
Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ). Flush out the gas tank if needed.
Drain the carburetor. There should be a screw on the lower side or bottom of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. Install a new stock NGK spark plug and try to start the engine. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.
Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. Post a comment to get back to me.
A “very helpful” rating on this answer? Thanks!
Posted on Jul 03, 2009
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