'98 GU! TB45E Gas/Petrol Starting

[John43ls]

Intermittently won't start. Both engine light and gas on light flash. Compression OK. Started perfectly for RACQ bloke (of course). He checked all he could, battery, alternator, fuel pump. Main tank (gas I presume) gauge shows full, sub tank shows half. No petrol smell from flooding after vigorous accelerator pumping. Anyone help, please?

[jay see]

Intermittently won't start. Both engine light and gas on light flash. Compression OK. Started perfectly for RACQ bloke (of course). He checked all he could, battery, alternator, fuel pump. Main tank (gas I presume) gauge shows full, sub tank shows half. No petrol smell from flooding after vigorous accelerator pumping. Anyone help, please?
When you say won't start, won't crank nothing, dead or cracking but not firing up.

[John43ls]

Cranking like a beauty but not firing. Occasionally makes a bit of a grumble but then dies. I suspect the petrol gauge may be wrong, but when the RACQ bloke started it, it ran for a while. I'll have to make a hike to a service station to get a few litres to eliminate one possibility.