Page 1 of 1
Bit Stumped?
Posted:
Mon Jun 03, 2019 9:20 pmby foremanbob
Just built a new engine for a mate RT195... built about 4 of these this year... can I get the bastard to start?
Engine leak tested. 1.2mm squish. 0.5mm plug gap
Got plenty Fuel... Know I've got good compression... I'm getting a good strong spark....
I dont know the heritage of the Stator & Flywheel, never saw the engine running but told it was....
Compression, Fuel & Spark.... should equal bang... but nothing.
Tried easystart... nothing...
Can only be timing right?
Static Timing set at 17deg (positive stop TDC)
Re: Bit Stumped?
Posted:
Mon Jun 03, 2019 9:35 pmby Jono
Hi mate
Is the engine in the scooter or on test rig.
If in bike is ignition down to Earth? Disconnect ignition kill wire to headset.
Maybe worth a try.
Jono
Re: Bit Stumped?
Posted:
Mon Jun 03, 2019 9:50 pmby MickYork
Piston right way round ?
Would be trying another stator, plug, cdi and if desperate a flywheel.....
Re: Bit Stumped?
Posted:
Mon Jun 03, 2019 10:02 pmby foremanbob
Not green wire from headset... good a good strong spark
Piston fitted correctly
Got a new stator and flywheel for the next build that I’ll try tomorrow night
Re: Bit Stumped?
Posted:
Tue Jun 04, 2019 8:51 amby HxPaul
foremanbob wrote:Just built a new engine for a mate RT195... built about 4 of these this year... can I get the bastard to start?
Engine leak tested. 1.2mm squish. 0.5mm plug gap
Got plenty Fuel... Know I've got good compression... I'm getting a good strong spark....
I dont know the heritage of the Stator & Flywheel, never saw the engine running but told it was....
Compression, Fuel & Spark.... should equal bang... but nothing.
Tried easystart... nothing...
Can only be timing right?
Static Timing set at 17deg (positive stop TDC)
If your getting a good spark,all it can be is the timing.
Re: Bit Stumped?
Posted:
Tue Jun 04, 2019 12:13 pmby Toddy
foremanbob wrote:Not green wire from headset... good a good strong spark
Piston fitted correctly
Got a new stator and flywheel for the next build that I’ll try tomorrow night
A good strong spark with the plug out does not mean its sparking in the scooter try the green wire out to check
Re: Bit Stumped?
Posted:
Tue Jun 04, 2019 12:45 pmby foremanbob
Thanks Toddy... only green from stator connected...
Re: Bit Stumped?
Posted:
Tue Jun 04, 2019 3:33 pmby coaster
Is the plug getting wet?
It might be sparking but is it sparking at the right point? Have you tried a different flywheel?
Re: Bit Stumped?
Posted:
Tue Jun 04, 2019 7:48 pmby foremanbob
Changed to a new flywheel... no difference...
Changed over the stator... started second kick....
Thanks for your help...
Re: Bit Stumped?
Posted:
Tue Jun 04, 2019 8:15 pmby Toddy
foremanbob wrote:Changed to a new flywheel... no difference...
Changed over the stator... started second kick....
Thanks for your help...
Always good to hear a happy ending mate
Re: Bit Stumped?
Posted:
Tue Jun 04, 2019 8:25 pmby foremanbob
Yeah... you do start to doubt yourself.... everyday a school day with old 2 strokes
Re: Bit Stumped?
Posted:
Wed Jun 05, 2019 9:20 pmby Andyf
I'm a fully paid-up member of the WKFA Scooter Club so forgive daft question. What wasn't happening?