A few weeks ago I finally got my 1975 FJ40 running for the first time since having my 2F rebuilt a while back. After the initial startup (30 minutes between 1500 and 2500 RPMs) it briefly ran beautifully, then suddenly wouldn't idle below about 1100 RPMs.
After a bit of troubleshooting (stock carb) I guessed my idle solenoid was bad, so I ordered a new one. After installing the new idle solenoid, it ran great again for a bit - then suddenly wouldn't idle again. This time wasn't as bad as the first time, now it would stay running if I set the idle at 800-900 RPMs.
After a bit more troubleshooting I came back to the idle solenoid, wondered if maybe there was something in its little chamber that was preventing it from functioning quite right. I pulled the solenoid and removed what looked like a clear flake (of ? - not sure what it was) on it, also tried to clean out the chamber a bit (carb cleaner + toothpick - couldn't think of anything better at the time!) before screwing the solenoid back in. Voila! It ran great again and I was feeling very proud of myself, until...
Once again, it suddenly stopped holding normal idle, now requires 800-900 RPMs to stay running. And it's not a smooth 800-900 RPM idle, sounds like it's missing and occasionally dies even with the faster idle (but it runs/drives well above idle). And this time, pulling the idle solenoid and trying to clean it and the chamber didn't improve anything.
Thoughts on what my problem is? I would still guess it's related to the idle solenoid, but maybe not.
After a bit of troubleshooting (stock carb) I guessed my idle solenoid was bad, so I ordered a new one. After installing the new idle solenoid, it ran great again for a bit - then suddenly wouldn't idle again. This time wasn't as bad as the first time, now it would stay running if I set the idle at 800-900 RPMs.
After a bit more troubleshooting I came back to the idle solenoid, wondered if maybe there was something in its little chamber that was preventing it from functioning quite right. I pulled the solenoid and removed what looked like a clear flake (of ? - not sure what it was) on it, also tried to clean out the chamber a bit (carb cleaner + toothpick - couldn't think of anything better at the time!) before screwing the solenoid back in. Voila! It ran great again and I was feeling very proud of myself, until...
Once again, it suddenly stopped holding normal idle, now requires 800-900 RPMs to stay running. And it's not a smooth 800-900 RPM idle, sounds like it's missing and occasionally dies even with the faster idle (but it runs/drives well above idle). And this time, pulling the idle solenoid and trying to clean it and the chamber didn't improve anything.
Thoughts on what my problem is? I would still guess it's related to the idle solenoid, but maybe not.