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What would the most likely cause...
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Author:  kasperflipped [ Mon Mar 28, 2011 11:00 am ]
Post subject:  What would the most likely cause...
Of the following.
After finally getting my mini running again after a 2 year hiatus i noticed that when i give it a decent quick rev from idle, the engine feels like its starved near to the point of stalling before it revs up. To stop it doing so i have to give it a little half rev in the middle of the low point to keep it alive. The engine is supercharged with one of 92's SC12 kits and even in my limited mechanical knowledge i figured its a fuelling issue and im leaning towards it not getting enough??? Ive checked the dashpot oil and it seems plenty full which i hope rules that out. Would a different needle help or perhaps richening up the mix?
thanks again
trent
Author:  simon k [ Mon Mar 28, 2011 11:08 am ]
Post subject: 
yeah, it leans out - if you watch the dashpot piston it's probably jumping up when you rev it. Try thicker oil (I put 20/50 engine oil in mine). I'm getting a heavier spring too

get a little torch and look down the carb throat as you rev it, you'll see the fuel spraying out, and how the flow changes when you rev it
Author:  kasperflipped [ Tue Mar 29, 2011 9:32 am ]
Post subject: 
simon k wrote:
yeah, it leans out - if you watch the dashpot piston it's probably jumping up when you rev it. Try thicker oil (I put 20/50 engine oil in mine). I'm getting a heavier spring too

get a little torch and look down the carb throat as you rev it, you'll see the fuel spraying out, and how the flow changes when you rev it


I did as you said and its all fixed, thanks heaps!!!
Author:  simon k [ Tue Mar 29, 2011 9:47 am ]
Post subject: 
kasperflipped wrote:
simon k wrote:
yeah, it leans out - if you watch the dashpot piston it's probably jumping up when you rev it. Try thicker oil (I put 20/50 engine oil in mine). I'm getting a heavier spring too

get a little torch and look down the carb throat as you rev it, you'll see the fuel spraying out, and how the flow changes when you rev it


I did as you said and its all fixed, thanks heaps!!!


yay! I got one right :D
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