why no fire

[ducati998]

i have a 185 i pull and pull and pull and no fire. I have changed the spark plugs and nothing. I have checked to make sure the timimg is correct and is, the compression is 117 psi and when i put fuel down the spark plug hole and pull over still the same nothing. Seems like it doesnt even want to fire.. Today i changed the ignition coil with another and nothing now i am stumped. Any help would be muchly appreciated , one other thing i checked to see if both valves were moving and they seem not to be sticking.

[Twilight]

Im in the same boat as you, I had my 200e running, now it wont start with; compression/timing/spark.

Yours might need more compression, like 120-150

[300rman]

make sure you have spark. hold the plug against the head and have someone else pull the rope while you look to see if it is making a spark.

sounds like a spark problem, as fuel in the cylinder doesnt even let it pop.

also, maybe the valve timing is 180 degrees off?

and 117lbs compression seems real weak to me.

[chavo80]

check the ground wires on the coil pack and make sure your get spark>gl

[bigreddaddy]

Does the compression release work? I have a 200s I'm working on and it won't start unless the lever is down (valve closed).

[ducati998]

yes decompresiion lever is down and it seems to workand to pull over when lever is down and easy to pull when lever is up.

[bigreddaddy]

Yeah thats the way its supposed to work. The easiest way to check spark is to use a volt/ohm meter and check voltage at the plug wire. See if you get a reading every time you pull start it (should be around 12v-14v). If you do then you know your getting spark. If you don't have a meter then hold the plug against the motor while someone else pulls the starter. You should see a nice blue spark.
Also, make sure your on/off switch is working correctly and check the GROUND WIRE where its connected to the frame.