External Fuel Filter ?
Does anyone here use an external fuel filter ? Can the filter cause the engine to run hectic ? Meaning with filter, the engine tends to run a little hotter, without the filter the engine is cooler, all that with the same needle settings.
The filter I've been running is the one from Serpent and I clean it up once every gallon or so.
Everytime I open up the filter, there are always some dirts trapped in it. So I guess running without one isn't a good option. Until yesterday when I was breaking in the new engine, I had to turn the upper needle all the way out to get around 140sF engine temp, that was with the filter.
Without the filter, the engine was hard to start since it was too rich, so I screwed in the upper needle a few times until it just flushed and the engine temp was back to 140s.
So, was it the filter ?