RV repairs
I have a 1994 a winnebago brave 24’ and need someone’s opinion on this. I’m not getting fuel to the TBI carburetor on the Chevy 454 motor. I have changed the fuel filter the fuel pump rebuilt the ca...
Forum Discussion
Did you try the OBD (on-board diagnostics)?
No what’s that?
Depending on wether you have OBD1 or OBD1.5 the data available on a 1994 is limited (compared to more modern vehicles), but none the less it is always a good place to start (I.e: the easiest first). Other than that with the air cleaner off when you pump the throttle does it squirt gas in the carb? When you pull a spark plug and ground it does it spark?
I have no idea what you have checked, but as far as I can recall, an OBD from back in the day might likely diagnose an ECM problem.
Thanks again and there’s spark at the plugs but no gas squirting out at the TBI carburetor. So I added another inline fuel pump just to see if that would work because the one that’s in the gas tank I’m told is only six months old. I got it to start but it immediately dies. I’m going to have a diagnostic done on it, a guy quoted me a 150.00 to do it then went up to 280.00 before he even came out and I got mad and canceled. I’m on a limited budget right now
I've watched a lot of Junkyard Digs and Vice Grip Garage on YouTube, so I know how those guys resurrect dead vehicles, most with some kind of spark or fuel problem. Derrick at VGG often uses a boat tank and sometimes electric pumps to cut the factory gas tank and pump out of the loop to get vehicles running. In your case the best trouble shooting you can have is to get a portable fuel tank, and an electric fuel pump (that supplies the fuel pressure that TBI needs), some fuel hose, an inline filter, and jerry rig up a temporary fuel system. The goal is to see if you get fuel to the TBI, will the vehicle fire up and idle smooth. Basically you'll need to disconnect the feed and return lines and set up a feed and return line to your portable tank. You'll jumper wire the fuel pump to the chassis battery to move fuel and then fire the rig up.
If your jerry rig setup will run the engine, then you know that the pump in the tank is the problem, or you have some kind of pinch or compromise in the fuel line from the tank to the engine. Electric fuel pumps in tanks is a huge pain in the behind. Mostly because whoever is having to replace it, has to drain off the fuel into some other storage tank, and then you have to work on your back to drop the tank, which is probably 3 times the size of a regular vehicle, and likely 3 times as heavy. And then you have to get top access to the tank to fish out of the tank the pump assembly, which is often commingled with the tank level sensor, and you are often replacing both at the same time.
