Wont start unless starter fluid or petrol in cylinder

[antonio350]

It Wont start unless starter fluid or petrol in cylinder

It has 100 psi both cylinders stock bore oem pistons

290 main stock pilot FMF pipes and boost bottle 

Why wont it start cold the bowls are correct the choke tube is in there once warm it runs fine but then left overnight i have same issue

[n2otoofast4u]

What size pilot?

[ZillaFreak]

what is your elevation?

[ginger]

if its stock pilot i would guess it is small, but elevation would confirm that.  assume your trying to start it with the choke on?  

 

do yourself a favor and ditch the boost bottle before it burns up your motor. 

[antonio350]

On 03/08/2018 at 10:24 PM, ZillaFreak said:

what is your elevation?

62 ft

[BigRed350x]

I believe 25 is the stock pilot.  Try a 27.5 pilot and see if its any easier to start.  Where are your air screws set?  BR8ES plugs?  Plugs look good, no fouling?

[ZillaFreak]

So 290/25 jetting

100psi in compression test

62FASL

First, compression test, was it done correctly? If so, your compression is very low for a stock banshee and will cause hard starting when cold.

[booxzzy]

So 290/25 jetting
100psi in compression test
62FASL
First, compression test, was it done correctly? If so, your compression is very low for a stock banshee and will cause hard starting when cold.

X2 what he said.
Had exactly the same issue,half way through the rebuild

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