gilera dna 50 flashing temperature gauge?

yes very likley to be the head gasket as bb says they always go and then pressurises the water system the gasket is only rubber and its easy to do would take me about 15mins to do it and replace the coolant too.make sure you use a genuine gasket dont use a pattern one they always turn to bubblegum after a few days.

adam bike doctor
July 2010

water cooled check water level
air cooled check filter
check engine oil level.
When you check oil is it black and sticky or grey. if grey it mans it has water in it and yu head gasket gone
check spark plug as well. is i the right one!

bb
July 2010