My wife was riding her NRG yesterday with no problems..slowed down a bit, went to accellerate and the engine died..have not been able to start it since...
What i.ve one so far..
1, Checked plug..good spark (plug only done about 50 miles as it's new - orange spark)
2, dismantled and cleaned carb, checked jets, fuel lines.
3. Checked compression - normal compression for this type of bike I think, feel plenty of back pressure on finger
4. when trying to kick start, the engine turns but will not fire, after a few attempts there will be a small backfire from the exhaust.
5. plug is not wet when removed (infact bone dry) and is gapped correctly.
Any further suggestions would be greatly appreciated
I am about to go and buy a new spark plug just in case it is in someway faulty - but I don't think it is !!.
UPDATE UPDATE UPDATE
Took the head off and found the piston rings very worn and extremely loose on the piston...although had compression, not enough I don't think, not enough to blow my finger out the plug hole when kick starting...I have ordered some new rings, hopefully this will improve compression and hopefully go someway to solving the issue...
I'll let you know how I get on
simon
March 2010
if plug is bone dry.then petrol not getting to engine.( not getting into carb )take plug out .pour a spoon full of petrol down plug hole. refit plug and try startiing it.
rayb
March 2010
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