1992 GSXR-W. Non-starter

[Mid-life-crisis]

Thanks for that Kat-angler. Lot of sense there.

But this is making no sense to me.
Checked all ht leads with spare spark plug resting on engine.
Could see a spark on all leads.

Took air filters off.

Sprayed carb cleaner into carbs, whilst hitting starter button.

Absolutely nothing.

The only logic I see is that all 4 plugs packed up simultaneously.

Is that even possible.?
Can there be a weak spark.?
Strong enough for me to see easily butt not enough to light gas or carb cleaner?
Dirty connection? Where to clean?
Thanks again.

[Captain Chaos]

change all 4 plugs, for new ones, and try again.

Suzukis are known for eating spark plugs when starting on a not fully charged battery for example.

[davemfox]

Were your plugs wet?

Is there definitely fuel getting through?

Dave

Edited September 14, 2020 by davemfox
Added in extra comment

[Mid-life-crisis]

Hi guys just an up date.

Went through everything.

Changed the CR9 plugs for CR10's.

Nothing, drained all the gas. It looked bad. Yellow and oily. 

Fresh gas and it started, Synchronised the carbs and did a 25mile blast with no issues.

So was the gas, which seemed impossible to me as bike had only been parked for a week, when it first refused to start.  Or was it the plugs.

Which ever it was, thanks to everyone who offered help..... My parting wisdom is "check and double check the bloody obvious!" Lol.