r_chez_08
Should be in the shop...
It all goes down to 4 basics (mentioned above)
Fuel: test with starter fluid or gas down the plug hole. Faults usually lie in the Carburettor (or intake)
Compression: test with a comp. tester. If you don't have one, with the spark plug out it should push your thumb off the hole. Lack of compression comes from bad valve seal, rings and gasket.
Spark: test by putting the tip of the plug against an earthing point. A nice blue spark should be seen. Faults are usually to do with bad coil or bad plug, it can also be caused by incorrect gaps.
Timing: both valve timing and ignition timing need to be correct. Check valve timing by seeing if the two dots are ligned up on the crank and cam. The pushrods can also get damaged, or valve lash can be too great or little.
Ignition timing is simply due to the position of the magnet on the flywheel relative to the crankshaft. The only real way it can go wrong is a sheared key in the flywheel.
I know the above is quite general, but it may be of some use.
The spluttering and flame sounds like a sheared key. Take off the flywheel and check.
When gas is put down the hole it should start, turn over a bit (for a second or so) then stop.
Fuel: test with starter fluid or gas down the plug hole. Faults usually lie in the Carburettor (or intake)
Compression: test with a comp. tester. If you don't have one, with the spark plug out it should push your thumb off the hole. Lack of compression comes from bad valve seal, rings and gasket.
Spark: test by putting the tip of the plug against an earthing point. A nice blue spark should be seen. Faults are usually to do with bad coil or bad plug, it can also be caused by incorrect gaps.
Timing: both valve timing and ignition timing need to be correct. Check valve timing by seeing if the two dots are ligned up on the crank and cam. The pushrods can also get damaged, or valve lash can be too great or little.
Ignition timing is simply due to the position of the magnet on the flywheel relative to the crankshaft. The only real way it can go wrong is a sheared key in the flywheel.
I know the above is quite general, but it may be of some use.
The spluttering and flame sounds like a sheared key. Take off the flywheel and check.
When gas is put down the hole it should start, turn over a bit (for a second or so) then stop.
