Had a problem with restarting, the car just cut out and hasn't started since I have had carbs off nothing wrong there I have replaced coil and points and condenser the car is turning over quite fast but doesn't fire up the car is a triumph 1500cc 1969
The three fundamentals...
1. fuel
2. spark
3. compression
Low/zero compression would explain faster than normal starter spin, but questionable root problem with "just cut out".
Are plugs wet with fuel? If not, verify carb bowl has fuel at proper level. If plugs are dry, pour a couple tablespoons of fuel down the carburetor and see if it fires. If it fires... its carburetor or no vacuum/compression. If it doesnt fire with raw fuel, then likely no spark, followed by low/no compression.
Recheck spark with a cheap spark tester, the kind with adjustable gap, and verify check actual spark.
Do a compression test.
SOURCE: Problems in wet weather and cleaning my triumph won't start.
Water is getting into your ignition coils.
Trace the spark plug lead up to the coil.
Get some ignition sealer spray and spray loads of it on the leads and coil.
When a bike is new, it is sealed. After washing with detergents it gets washed away. Spray the leads and coil once a week to keep them totally dry.
An immediate way to get round when wet is to spray wd40 on the leads and coil, it should start straight away.
But, don`t spray ignition sealer on until it is totally dry.
Hope this helps
SOURCE: JOHN DEERE 318 LAWN TRACTOR WONT START
ok, since you have the points, I assume you have the B43g Onan
engine. Was it running before the new parts were installed?
Check your point gap and make sure it is .016, plugs ahould be gapped at .025 Make sure your plug wires are good too. Should be somewhere between 0 and 10,000 ohms per foot, when measured with an ohmmeter. Once everything is rechecked for gap distance, make sure there is no spark by pulling plug out, leaving wire on and ground the outside of plug to the chassis of the tractor.
Crank over and look for the spark. Coils are about $100, so you want to eliminate everything else first.
Diagnosing a points ignition for no spark is really simple. Do you have 12V at the coil? Do you get a spark when you connect and disconnect the negative terminal of the coil to ground? If not you have a bad coil.
SOURCE: HAVE A JOHN DEERE 318 LAWN TRACTOR, CHANGED POINTS
Check the coil impedance on the primary and secondary side. You'll have to disconnect the battery negative cable so you don't short something out. Unplug the spark plug wires and the two sets of smaller wires connected to the primary side of the coil. The primary coil reading should be between 3.7 ohms and 4.6 ohms while the secondary (spark plug side) should be between 34.2 k-ohms and 41.6 k-ohms. If the resistance values you measure are outside of these ranges, you need to replace the coil.
SOURCE: I have a Ferguson TE20 petrol starts fine runs 5
Sounds like a bad ignition condenser. Many nowadys aren't worth spit, and you may wind up going through a few until you find a good one.
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