Hi guys. I have a landa mvp 3-3000 wlth 350hrs on it. The last couple off times I used it the burner didnt fire right away, it took a few sqweezes of the wand then it would fire up. yesterday it took 10 minutes of flowing water under pressure before it finally fired up. It seemed to burn well for the next 10 minutes but i noticed puffs of blue smoke now and then like it was going off and on. Today it would not fire so I need to start troubleshooting.
I dont know where to start, spark, fuel or air. And How do i check these thing without the engine running, 12 volt batter?