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  #11  
Old 07-29-2008, 12:41 PM
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Where are you located specifically?
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My rig... "Maude"
1976 FJ40 with some stuff and some leaks.

1999 UZJ 100 Series bone stock ready to rock AKA:The backup minivan

2012 Toyota Sienna Minivan, fastest Toyota in the stable.

My camping trailer build up thread.

"You 80 guys are just a Sawzall away from nirvana." -Red Chili
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  #12  
Old 07-29-2008, 12:43 PM
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I had a similar problem and it was a clogged PCV.

Easy and simple to replace yourself

Still could be adjustment. Jeff Zepp is a great one with the 1F engines. Hopefully he will chime in here
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  #13  
Old 07-29-2008, 12:44 PM
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I've actually got the 2F swapped in, or so the previous owner told me. I'll have to try the PCV.

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Where are you located specifically?
SW Denver, near Federal and Evans.
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  #14  
Old 07-29-2008, 01:16 PM
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OK, now I'm confused. It's definitely a 2F according to the block tag. When I checked SOR's diagrams, it looked like the PCV should come out the block near the firewall, above the starter. It looks like mine is up front under the #1 plug. Am I looking at the right thing here?


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  #15  
Old 07-29-2008, 04:17 PM
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New PCV and tubing installed.

The engine seems to run a little smoother, but the problem still remains. It seems like it's not happening anymore when the truck is standing still, but still there when it's under load (actually moving the truck).
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  #16  
Old 07-29-2008, 04:37 PM
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Looks like a weber carb. I remember reading on mud a lot of issues with those where people ditched them and went back to a stock carb.
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  #17  
Old 07-29-2008, 04:45 PM
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Looking at the under-hood pic, seems like a lot of non-stock stuff happening. It's going to be hard to diagnose. I would go through the motions that Romer suggested, including the basics: Carb rebuild (or stock replacement), new plugs and wires, tune up...

It's an FJ40 (aka 30+ year old rig that will need lots of time, work and $ to own). Half the fun of owning an old rig is working on it. You're going to need to learn how to wrench on it yourself sooner or later, or else pay a load of money to take it into a specialist mechanic every time something comes up. Just being honest here.

Jump in and start asking questions as you go. Ih8MUD is a great resource too.

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  #18  
Old 07-29-2008, 04:50 PM
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What kind of distributor is that? I would guess it should be vacuum advance and yet I don't see any vacuum tubes from the carb. There's some odd looking electrical wiring under there too. If the problem is while under load, might be more likely that it's a timing or firing issue.
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  #19  
Old 07-29-2008, 04:57 PM
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The carb was rebuilt just before I bought it last month, and it looks like the plugs are new as well as distributor cap and wires, though I haven't pulled them off yet to check them. It was running fine when I bought it, this problem just started last week. I'm not sure what the actual distributor is, but I'll get a bett er pic of it in a bit.
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  #20  
Old 07-29-2008, 05:36 PM
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Here's a better pic of the dist. if anyone can ID it off of that.




Also, what else in there are you seeing in there that seems aftermarket? Most of it seems pretty standard from what I've seen on others. As far as the wiring you mention, the light blue line at the top goes to the electric choke. The red wire running off the battery is a battery tender.
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