Question

i have a upflow high eff lp furnace out in my garage it is a weatherking 9000+ 120,000 btu!it's 14 yrs old, now i did'nt run it for about 4 yrs so i went to start it up and this is what i got,lp valve is open powers up fine,now when i set the thermo to call for heat the inducer motor comes on then it clicks hot surface igniter lights up then it clicks again i hear a little bit of gas go threw valve, clicks again and nothing lights? does this a couple of times and then stops,   checked limit switch checked transformer and thermo have 24 volts, pulled out igniter not cracked that i can see,igniter has 115 volts!pulled out orfice looks clean, on control board 2 lights are on power+ok light when i had the manifold out of the box i tried it again everything lit up inducer came on tried to fire up but after 1 or 2 clicks that i hear gas comes out the nozzle then its stops minute later gas comes out again then stops,very confused! i am a hvac tech 7 yrs never saw this before? thanks chuck