Help please no spark on 04 Mastiff

bkfalcon

Member
Bike will crank and crank but will not start, its getting fuel, leds on hec are indicating working ok, voltage at coil but nothing firing out of plugs?
 

prizepup

Active Member
It may be your battery. How old is your battery? How many CCA's (cold crank amp) does it have? When was the last time she ran?
 

bkfalcon

Member
It may be your battery. How old is your battery? How many CCA's (cold crank amp) does it have? When was the last time she ran?
brand new battery just bought, got power at cpu unit module, voltage at coil but no spark battery is good it cranks and cranks but will not start,
 

Little-Boo

Well-Known Member
Troop Supporter
Does anyone know if the 04 Mastiff has a crankshaft sensor and if so where is it located?
Your has a cam senor, if you are not getting spark it could be the cam sensor and or the Ignition module. That is where I would look next :2thumbs:

Carlos :whoop:
 

2004BC

FREEDOM!!!
is there a difference between a cam sensor, and a crank sensor?:cheers:
If your an 04 you probably have a 107 so check your Thunderheart to see if the light flashes on and off as you crank the bike. If not take off the small round cover next to your right foot on the engine and see if your cam sensor is burned, smells bad, or damaged. Start there.
:cheers:
 

bkfalcon

Member
If your an 04 you probably have a 107 so check your Thunderheart to see if the light flashes on and off as you crank the bike. If not take off the small round cover next to your right foot on the engine and see if your cam sensor is burned, smells bad, or damaged. Start there.
:cheers:
well it wasnt burned or damaged that i could tell but replaced it and she fired right up.:lol:
 
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