Generator Problems

The generator has been "stumbling" sometimes. It seems to be random and some tanks it will not do it at all. When it does this stumbling it almost always doesn't actually die. Rod has been saying he is going to get a fuel filter for it. However, last night was the first time since we have been running on the generator that something happened to cause it to not run all night. Not sure what time it died but when the alarm went off at 5:00 a.m. it was chilly in the camper. Luckily the low last night was only 48 so it didn't get too cold. This is Rod's new top priority!