Question about 2002 Honda CR 125 R

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2002 cr80 wont start.

Just installed new weisco piston kit, good compression, new gas, new plug, new coil, tries like hell to start, but wont. has good spark "blue"

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Is the timing right? Check the timing.


Posted on Apr 17, 2009


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LT 1550 stopped running and now turns over but wont start

You need to determine what caused it to stop. Is it fuel, carburetor problem or spark, coil problem, or compression, valve or piston problem.
Start by removing the plug, touch the metal on the side by the plug hole, keep fingers clear, turn motor over and look for a blue spark, if good, set plug aside and put your finger over the hole, turn engine ove and it should easily push your finger off by compression. If all, of these are good, you may have gunk in the carb, float stuck or other carb problem. You can also try starting fluid. spray a some at the intake of the carb, you might have to remove the air cleaner, try starting, if it then pops or fires, then it looks like a carb problem, starving gas.

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My 1982 honda cr80 has no smark but has compression and its not the spark plug

check thd kill switch ! remove plug cap off the ht and see if you can feel a voltage as you kick over the engine ! it wont kill you but easy way to know if coil is working ! plug caps resister break down !

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did the car run before replacing the plugs? If yes then retrace your steps to see what became unhooked. If not then, I would check the fuel rail to make sure you're getting gas to the cylinders. If that's good then I'd check the coils to make sure you're getting spark. If you have a coil pack on each plug then I'd look at the ignition module.

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Can't get it started after new spark plug (gets spark), new gas, good compression tried starting fluid. Whats the problem?

Quick way to check condition of the engine is to remove the muffler. Also make sure that the spark arrest screen is clean. With muffler off, examine the condition of the piston and cylinder. If the piston looks burned and cylinder is scratched, saw will be hard to start. The cylinder and piston should look very smooth. Secondary test to verify condition of engine is to spray plenty of wd40 in cylinder and around piston, then pull the starter slowly. If you see lots of bubbles as you pull, indicates compression is leaking and will be hard to start. If cylinder/piston are in good condition, use new spark plug and retest.

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Hi have a Husqvarna 410 2000 got spark fuel back fires but wont start checked flywheel is on right valves rock at top dead centre ... ?? but wont start ? kick start only tho ?

If the valves "rock" at TDC, the piston is at TDC EXHAUST, not TDC COMPRESSION. Chances are the engine is flooded. Install a fresh spark plug and go easy on twisting the throttle when starting the bike. Be sure the battery is in good condition. Push the kick lever to just past TDC compression then give a strong kick. Don't try to kick start with the piston going upward on the compression stroke. Be sure the air cleaner is not dirty and you have good gas. Please rate my answer. Thanks!

Mar 27, 2011 | 2000 Husqvarna TE 410

1 Answer

Husqvarna 51 died and wont restart

if you have a good compression,a strong enough blue spark and carburetion for the fuel air mixture try priming the engine(put small amount of gas in the spark plug hole)then start the engine.If the engine runs only the gas you put inside the cilinder there is a carburetion problem to find and fix.
let me know regards savumihai71

Apr 13, 2010 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

My 2002 polaris trailblazer wont start it has fire

If you have oil and gas and it will fire then try a new plug. A bad plug when removed will appear to be fine but under compression can fail.

Also try a splash of good gas in the throat of the carb or intake (if fuel injected) with a new spark plug. My bet is it fires just fine.

If this is a fuel injector type engine you could have a bad injector control unit or a clogged injector.

If it fires with gas in the intake manifold then suspect carb or injector system. (which ever applies)

Thanks for using FixYa!


Feb 19, 2010 | Polaris ATV

1 Answer

Won't start

only thing left would be the timing of the spark. inspect rotor, key may have broke and spun on shaft.

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i have seen these saws split the diaphram in the carb, so get that carb out and take off the bottom 4 screws... also iv seen 1 with the igniter coil gone weak and only sparking the plug the odd time so make sure yu hav a good spark also...

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I got a 1995 cr250 dirtbike and i have a problem starting it it wont start but keeps back firing the bike has a bran new rebuild it allways had a problem starting it. but now it wont start i took the carb...

im thinking if it has spark and getting gas and has compression, the bike will run. sometimes a "WEAK" coil will give a good spark, but under compresion its not enough to ignite the fuel. if thats not the case, take the air filter off and spray starting fluid into the carb and with NO CHOKE, give it full throttle and kick it over. if that dont do it try compression starting it, tow it for some distance if you have to. if that dont do it, then there must be something wrong with the carb. jets, fuel air adjustment. thats all i have. good luck.

May 06, 2009 | 2003 Honda XR 125 L

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