Visible Fuel
Initially posted in wrong section...
Guys,
This is a really dumb question.. I have been running my FITECH (600hp) for a month or so with no issue. Tonight I was tinkering around with the car and noticed at idle I can see fuel (gas) running down the walls (all tubes) of the throttle body, is that normal? I never paid much attention, the car runs great, no gas smell, and AFR runs as set. Additionally, are the temp sensors any good? It reads 10-15 off of the factory sensor.
Feedback for a newbie would be appreciated.
Most temperature sensors supplied under read by about 10 degrees.. Replacement AC Delco 213-928 or equivalent. Not sure about fuel.
I found this link on YouTube... posterity answer for future users. Visible fuel appears normal.
I've noticed the same thing on my 600 FiTech, and I have seen it on numerous OEM GM TBI units, so I think you're good. If you read some of the tuning literature on how the FiTech works while driving, they refer to the "film" of fuel that is used during certain changes in RPM and load, then replaced during other times. I think this "film" is what we are seeing coating the throttle body and intake manifold. Just a guess, but I wouldn't worry about it.