Backfiring and Stalls

[softwarez]

Hey,

My bike was running fine (GSX750F). Today I started to give it a service (Change oil/ oil filter and spark plugs).

here is what I did:

Took all fairings off

Took Petrol Tank off

Changed spark plugs

Drained oil

Removed oil filter

replaced oil filter

filled up with oil

Put petrol tank back on

Start the bike on full throttle (It starts but sounds like it is running normal.. lowish rev's when usually the rev's fly up with the choke on)

When I turn the choke off, it backfires and stalls.

Any advise? :S Thanks.

[Guest]

check your petrol lines,

[softwarez]

Sorry to sound ignorant. But what? Cracks / Being caught?

I will check now and report back.

[Guest]

that they're both connected. i had an issue with mine and it was the vacuum line that had been disconnected...

[softwarez]

Just to make sure I get this right:

I connected a pipe (vacuum line?) From the Carb to the rear of the stock cock, a drain pipe to the centre of the petrol tank. Then Fuel line to side of stop cock.

Do I have to do anything special via the On - Prime etc? (on the stop cock)

[softwarez]

The fuel lines seems to be connected properly and I can see fuel swishing around in the filter.

[Guest]

the fuel tap should be on,

are all the plugs/wires seated correctly...

[softwarez]

The plugs I used a T Wrench to place them in, and they went in well. (I tightened them by hand, but not over-tight). The caps are all seated properly also. (The sparkplugs also give good sparks (I tested this))

[softwarez]

Just to make sure I have not put the caps back on in the wrong order.. my order is currently:

Left Coil - 1, 3

Right Coil - 2, 4

[Guest]

sounds right..

and if they were in the wrong order it would sound like a sick harley..

how long did you run it for, would it benefit from a longer run...

[softwarez]

It sounds louder than usual, more gruntier. (May be the fairing is off, I dont know)

I ran it for about 3 minutes on full choke, nothing but a idle sound and random backfires

[Guest]

have you checked that the choke lever operates the slide on the carbs (exterior), you should see a bar move when you apply the choke, otherwise you have a snapped choke cable....

[softwarez]

/PHEW

It turns out my caps were the wrong way around! oooops!

I feel like a bloody donut now.

It should of been:

Left - 1-4

Right - 2-3

Thanks Walney for the fast replies and helping me out, really appreciate it!!