03 Chopper: spark and fuel, no start.

PUBKEEPER

PUBKEEPER

Member
Howdy all. After searching for 2 days, I can't find a thread with the same issues I am having. Getting good fuel, good spark, turns over, won't fire. I had the battery load tested and it's good, 500 cca. Not sure where to go from here, any thoughts?
 
PUBKEEPER

PUBKEEPER

Member
It's not flooded, I pulled the plugs(less than a year old), cleaned what little soot was on them when I verified spark, and they weren't wet. Seems like a timing issue Chubs, but why would that suddenly change with the bike sitting for maybe a month since last start?
 
Marky-Marc

Marky-Marc

Well-Known Member
Fuel, spark, air and you have all of them...are you testing spark AT the spark plug or at the END of the spark plug wire?
 
Marky-Marc

Marky-Marc

Well-Known Member
PUBKEEPER said:
Howdy all. After searching for 2 days, I can't find a thread with the same issues I am having. Getting good fuel, good spark, turns over, won't fire. I had the battery load tested and it's good, 500 cca. Not sure where to go from here, any thoughts?
Click to expand...
@PUBKEEPER, did you change your oil? Reason being, the crank sensor is next to the oil filter...make sure it's on TIGHT! If you pushed or wiggled it a little while taking oil filter off, bike won't start...keep it simple brother.....

Here's a link to a photo of the crank sensor...hope it helps...but if you have air, fuel and spark...it's could be your crank sensor, either wen't bad or connector is loose....

http://www.bigdogbiker.com/threads/good-coil-no-spark-to-the-plugs.33108/
 
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Brew

Brew

Troop Supporter
How old is the gas and when was it last running? The spark plugs are wet with gas correct?
 
Little-Boo

Little-Boo

Well-Known Member
Troop Supporter
Marky-Marc said:
@PUBKEEPER, did you change your oil? Reason being, the crank sensor is next to the oil filter...make sure it's on TIGHT! If you pushed or wiggled it a little while taking oil filter off, bike won't start...keep it simple brother.....

Here's a link to a photo of the crank sensor...hope it helps...but if you have air, fuel and spark...it's could be your crank sensor, either wen't bad or connector is loose....

http://www.bigdogbiker.com/threads/good-coil-no-spark-to-the-plugs.33108/
Click to expand...

Marky the 03 don't have a crank Sensor. They have a cam timing sensor of some type located on the cam cover. I have never worked on one so I just watch from the side lines :oldlaugh:

Carlos :eek:
 
FrankBDPS

FrankBDPS

Well-Known Member
Carlos is correct. The 107 did not use a cam sensor. If the bike was running a month ago it has got to be something simple. To me if you have a good strong spark I would look for a fuel issue.
 
chubs

chubs

Guru
FrankBDPS said:
Carlos is correct. The 107 did not use a cam sensor. If the bike was running a month ago it has got to be something simple. To me if you have a good strong spark I would look for a fuel issue.
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:oldthumbsup::oldthumbsup: Good point Frank. How do we know that it's getting fuel to the cylinders? Maybe try pullin the plugs out and giving each cylinder a small shot of gas, put the plugs in and see if she fires? That might narrow things down a little bit, but I have no clue how to check if fuel is getting through the carb. Just a thought. :oldconfused:
 
Mr. Wright

Mr. Wright

Knows some things
Take the air cleaner off, and look inside while you twist the throttle. You should see the gas squirting into the intake if gas is going through the carb.
 
chubs

chubs

Guru
Mr. Wright said:
Take the air cleaner off, and look inside while you twist the throttle. You should see the gas squirting into the intake if gas is going through the carb.
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DOH ! :oldcrazy: I told ya I aint the shiniest spoke in the wheel ! :nonod: I shoulda known to do that !!:yesnod:
 
Marky-Marc

Marky-Marc

Well-Known Member
Little-Boo said:
Marky the 03 don't have a crank Sensor. They have a cam timing sensor of some type located on the cam cover. I have never worked on one so I just watch from the side lines :oldlaugh:

Carlos :eek:
Click to expand...
Good to know bro....never worked on one either, but either way, crank sensor or timing sensor, if it were out, it wouldn't turn over correct? I am now correcting myself...hahahahaha
 
chubs

chubs

Guru
I'm probably wrong here Marc, but, I believe it would turn over. If it was one of those sensors, would the coils fire? Would it fire the coils, but at the wrong time? :oldconfused: I'm thinking you're a lot smarter than me, so I'll go with whatever you say! :cheers:
 
chubs

chubs

Guru
:hi: Shouldn't it crank over, but just not have spark? :oldconfused: Or would it have spark at the wrong time? :oldconfused: I'm starting to lean more towards a fuel, or lack thereof, problem.:skep: ( I really hope it's not something like I did, when I had the fuel valve in the wrong position! The cost of education keeps going up!! :crazybitch: )
 
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