Hey guys, I have a propane powered air cooled generac guardian 14kw from 2010 (GT-990 Engine) and beginning of the year it started taking longer (more crank cycles) to start up on its weekly test run until in around may when it constantly ran into overcrank.
the following was done already by generac service, they couldn’t find anything wrong with the machine:
valve lash checked
spark plugs changed
airbox unit replaced
gas supply checked
gas regulator checked by gas provider
now they suggest I start replacing more parts as a trial and error but this kind of an expensive game.
any idea what could be going on?
fuel plenum was replaced beginning of the year as a generac recall and I feel it has gotten worse since then
you can get the machine to start if you try forever (sometimes 30+ crank cycles) and once it runs it runs fine, I went through this a week ago as we had annoutage and in ran for 30 hours, no problems.
it’s just the starting that is difficult. I feel it has problems pulling the fuel somehow. If I have it cranking with the airbox open and I cover the air intakes with something I can get it to start sometimes.
what could be the reason it is not pulling fuel? Any other ideas?
as said , propane company checked fuel supply already and they said it is right where it should be (12psi or something? Don’t remember exactly...)
thanks in advance your help is much appreciated!!