CW Spark Issue
CW Spark Issue
I am asking because I’m trying not to second guess.
My CW stopped firing. I removed the tank and found the bullet connectors from the stator to the ignition coil were broken loose. I reterminated the wires and got a spark, but it was a small, pale spark. Not enough to fire the fuel.
Is this an indication that the condenser is bad? Or does it sound like a weak ignition coil? From running, to no spark to weak spark.
I’m contemplating changing the condenser first. I think it’s unusual for the ignition coil to burn out, right? Let me know what you think. Victor
My CW stopped firing. I removed the tank and found the bullet connectors from the stator to the ignition coil were broken loose. I reterminated the wires and got a spark, but it was a small, pale spark. Not enough to fire the fuel.
Is this an indication that the condenser is bad? Or does it sound like a weak ignition coil? From running, to no spark to weak spark.
I’m contemplating changing the condenser first. I think it’s unusual for the ignition coil to burn out, right? Let me know what you think. Victor
1978 175SL
1976 03 Wombat
1975 99 Road Toad (2)
1973 96 Dirt Squirt (2)
1973 “Wombat Combat”
1973 Combat Wombat
1972 94 Wombat (2)
1972 Super Squirt
1971 92B+ Ace
1970 92B Ace 100B (2)
1968 92 Ace 100
1966 Ace 90
; D Victor
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Re: CW Spark Issue
From running (fine, I presume?) to no spark had a clear cause - broken connection. You replaced the connectors and got spark - albeit weak. This condition must have developed while the bike was sitting. I'd say its time for a very thorough examination of the wires involved and repair work before digging into the stator and potentially jacking a good condenser. Partially broken wire or incomplete crimp contact with a bullet connector come to mind as possibly causal.
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Re: CW Spark Issue
I would suggest points and see what the spark looks like with a fresh plug, try the battery trick. Clarence
Re: CW Spark Issue
Clarence, it has a brand new plug. Never fired with this plug yet. Points were new and it doesn’t have an hour run tune on them yet. To which battery trick are you referring? The CW doesn’t have a battery.
1978 175SL
1976 03 Wombat
1975 99 Road Toad (2)
1973 96 Dirt Squirt (2)
1973 “Wombat Combat”
1973 Combat Wombat
1972 94 Wombat (2)
1972 Super Squirt
1971 92B+ Ace
1970 92B Ace 100B (2)
1968 92 Ace 100
1966 Ace 90
; D Victor
- Bullfrog
- Posts: 2784
- Joined: Mon Jul 22, 2013 4:05 pm
- Location: Oregon, 12 miles from the center of the Hodaka Universe(Athena)
Re: CW Spark Issue
You've received good guidance. Having new points which ran well a day or two ago, doesn't mean you can skip cleaning in order to remove a variable (which is often an important variable).
Also, you just completed significant work on the wire harness - double check your work. AND, since the wires got a fair bit of handling (and they are a half century old) a complete magnifying glasses check of every inch of wire and every connection would be a good idea. You might also look up the article in the Resonator Revisited about the blue points wire.
Ed
Also, you just completed significant work on the wire harness - double check your work. AND, since the wires got a fair bit of handling (and they are a half century old) a complete magnifying glasses check of every inch of wire and every connection would be a good idea. You might also look up the article in the Resonator Revisited about the blue points wire.
Ed
Keep the rubber side down!
Re: CW Spark Issue
Went to pull the flywheel and it was loose! Removed it without a flywheel puller! Turns out the woodruff key had broken in half longways! Half was in the flywheel and half still in the crank! So there was no timing!
All replaced now! Putting cover back on & going to fire it up! Victor
All replaced now! Putting cover back on & going to fire it up! Victor
1978 175SL
1976 03 Wombat
1975 99 Road Toad (2)
1973 96 Dirt Squirt (2)
1973 “Wombat Combat”
1973 Combat Wombat
1972 94 Wombat (2)
1972 Super Squirt
1971 92B+ Ace
1970 92B Ace 100B (2)
1968 92 Ace 100
1966 Ace 90
; D Victor
- Bullfrog
- Posts: 2784
- Joined: Mon Jul 22, 2013 4:05 pm
- Location: Oregon, 12 miles from the center of the Hodaka Universe(Athena)
Re: CW Spark Issue
You have experienced the primary cause of Woodruff Keys "shearing". Either the flywheel taper and crank taper are damaged and not seating with each other fully . . . or you forgot to tighten the flywheel nut (been there done that).
Any time the Woodruff Key shears off, it is recommended to do a detailed check for fit of the tapers prior to reinstalling the flywheel.
Ed
Any time the Woodruff Key shears off, it is recommended to do a detailed check for fit of the tapers prior to reinstalling the flywheel.
Ed
Keep the rubber side down!
Re: CW Spark Issue
Ed. This is my CW. Not the Model 03 project bike I am building. No wiring harness.
Checked everything. Found all pieces. Magnets in flywheel held the broken piece! She started on first kick!
I was getting it ready for HD! Was not getting it to start. Flywheel had loosened & snapped the woodruff key in half! Victor
Checked everything. Found all pieces. Magnets in flywheel held the broken piece! She started on first kick!
I was getting it ready for HD! Was not getting it to start. Flywheel had loosened & snapped the woodruff key in half! Victor
1978 175SL
1976 03 Wombat
1975 99 Road Toad (2)
1973 96 Dirt Squirt (2)
1973 “Wombat Combat”
1973 Combat Wombat
1972 94 Wombat (2)
1972 Super Squirt
1971 92B+ Ace
1970 92B Ace 100B (2)
1968 92 Ace 100
1966 Ace 90
; D Victor
- Bullfrog
- Posts: 2784
- Joined: Mon Jul 22, 2013 4:05 pm
- Location: Oregon, 12 miles from the center of the Hodaka Universe(Athena)
Re: CW Spark Issue
The ignition wiring can also be referred to as a harness (saves typing magneto wiring at the coils, wires between the mag and the high tension coil, kill button wiring - if you worked with it, flexed it, etc.).
Hope the shearing didn't mess up the taper fit.
Ed
Hope the shearing didn't mess up the taper fit.
Ed
Keep the rubber side down!
Re: CW Spark Issue
Nope. Taper fit is fine. Flywheel secure. Onward to other issues on other bikes! Victor
1978 175SL
1976 03 Wombat
1975 99 Road Toad (2)
1973 96 Dirt Squirt (2)
1973 “Wombat Combat”
1973 Combat Wombat
1972 94 Wombat (2)
1972 Super Squirt
1971 92B+ Ace
1970 92B Ace 100B (2)
1968 92 Ace 100
1966 Ace 90
; D Victor
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- Posts: 2240
- Joined: Mon Jul 29, 2013 6:34 pm
Re: CW Spark Issue
Good it is running Victor. A torqued flywheel will not loosen by its self that quickly, it takes a puller to take it off. Some where in time if someone over tightened it without using a torque wrench it could cause the lobe on the flywheel to split and then you can't keep the nut tight.
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