Like the subject says, the carb on my 2.6l Raider is dumping fuel again. I bought the carb from Mudraider earlier this year to replace the old one. That solved the problem. My mileage jumped from 10mpg to 13-15mpg at that time.

Now, the mileage is back down to 10mpg, the truck reeks of fuel when driving. The other symptom is intermittent. Sometimes, over 3000rpm, the engine stumbles really badly like its not getting air. I replaced the thermostat because it wasn't warming up, so the choke was probably closed, and it helped some, and it warms up fine now (it had been running very cold) but the problem still persists.

I just got done doing a physical inspection. While doing so I thought that one of the carburetor mounting bolts had come loose. It hadn't. It was tight, but it wasn't clamping down. Apparently when I replaced it, I didn't notice which bolt is longer than the rest. If anyone knows which one it is, I'd appreciate a bump in the right direction. I'm hoping to switch them around without having to reseal the carb to intake gasket.

Now, I'd think that with that problem there would be a huge vacuum leak, which would cause it to idle really high, but it doesn't. around 700rpm. And that's the other symptom- it idles terribly.

I'm getting pretty frustrated with this damned FBC, but I can't afford an EFI setup yet. When I move to a non smog-restricted area later this year, a weber might be possible. I'd love for this thing to just run nicely.

One last thing- I am wondering if the FBC controller might have some failed components in it, suddenly causing it to run badly. Leaking capacitors, etc. Where is it located on this Raider, so that I can open it up and take a look? After 25 years I'd imagine the capacitors are all dried out and not working.

Thanks for any and all help.