Had a similar issue with mine that was solved by replacing the battery cables. Had too much voltage drop across the cable and inconsistent connection. It’s a 1979 so the circuit might be a little different.
Finally got back around to this. Had issues with idle that turned out to be a flipped spacer between the body and flange.
All back together and idling steady at 650.
Thanks for all the help!
An update, looks like the “bad needle valve” guess was on the money. Lots of other interesting bits like missing retainer clips, slow jets and nozzles were reversed, stripped bolts, float wasn’t set close to correct, and the secondary diaphragm was shot. Waiting on a few more parts to put it...
Digging around underneath the battery and the fuel filter looks old. It’s an in-line black universal unit, and it’s probably safer to replace it. More parts to find.
I found a nice little “modification” to what I think is the High Altitude Compensation Advance line from the distributor.
I...
I haven’t checked the fuel filter. That’s a good thing to do. It has a new gas tank and fuel filter from the PO. It’s less than 6 years old and under miles.
Everything points to too much fuel. The bowl isn’t just “full” it is overflowing. The engine dies like it doesn’t have enough air and...
Thanks, we’ll see how it goes. I’ve got the carb kit ordered.
In the process of trying to identify carb and parts, it’s become obvious that my air cleaner assembly is not even remotely complete. None of the hose ports that aren’t plugged in are capped, the intake tube looks like it was cut...
Yeah, that tracks with my diagnosis. I’m not sure it’s an international carb, but looks more like it’s had plugs/welds to remove the smog fittings.
I have no idea when this was rebuilt, and it probably needs it. I was more worried that it was some sort of Frankenstein’s monster of an 83 air...
So I drained the gas out of the carb using the drain plug bellow the sight glass.
1. cranked the engine and watched the sight glass
2. Sight glass fills while engine is running
3. Seems to completely fill and engine runs for a bit longer
4. Eventually engine “chokes” like it’s got too much fuel...
I don’t post a lot, but I’m kinda stumped by what’s going on and could use some help. I’m in Central Austin/Rosedale.
I have 1979 FJ40 that’s been desmogged. I’ve been driving it pretty regularly over the last 3 or 4 years without any issues. Regular oil changes. Last year I replaced battery...