1981 - Truck - New to me

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johnny4ever

johnny4ever

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Greetings,

Up to now I spent all my time in either chat or the 60's and 80's forums. Recently sold my fj80.

Today I made it halfway home with my 1981 Yota 4x4.

Stopped running and had it towed home. Hopefully a fuel issue.


:cheers:
aaatruck.webp
 
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Welcome!!! Minis are awesome! You can beat the snot out of them, they'll go almost anywhere, and they are hard to kill!

Hopefully you will have an easy fix. There are plenty of guys in here that know enough about minis and 22Rs to bore you to death. So don't hesistate to post up if you can't figure out the issue.

Edit: If it ends up being a carb issue, I think I have a couple extras laying around. One I believe is good and the other would be good to rebuild.
 
Lowe Toyota said:
Welcome!!! Minis are awesome! You can beat the snot out of them, they'll go almost anywhere, and they are hard to kill!

Hopefully you will have an easy fix. There are plenty of guys in here that know enough about minis and 22Rs to bore you to death. So don't hesistate to post up if you can't figure out the issue.

Edit: If it ends up being a carb issue, I think I have a couple extras laying around. One I believe is good and the other would be good to rebuild.
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Im fairly sure its the cheap fuel pump the po had put in.
Do these trucks have a fuel pump at the tank?

Thanks!!
 
johnny4ever said:
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Im fairly sure its the cheap fuel pump the po had put in.
Do these trucks have a fuel pump at the tank?

Thanks!!
Click to expand...

Somebody else might chime in to the contrary but I believe the 81 still had a mechanical pump on the side of the head. A lot of people swap engines around from different years and have to run electric in-line pumps because the head doesn't have anywhere for the mechanical pump to go. (For example: My '80 had an earlier version 20R from a Celica which had an electric pump. So, they had to run a cheap in-line pump to make it run.) So, in tank? I don't think so. In-line aftermarket? Highly possible. Stick your head up under the truck and see if there is an inline pump on the passenger frame rail. Oh, and snap some pics so we can see what you're working with. :D
 
Inline electric on the passenger fender under the hood. When she quit the pump was hot to the touch. Unhooked it and cranked engine. No fuel from line. I took it to mean the fuel pump was tits up.

edit: Webber carb and the exhaust has headers.


J
 
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well iv had this problem as well. my yoder 80 yoder has a 293 cam but what happened all the time is my pump kept loosing prime so i moved it closer to the tank and it quit. the inlines are made to push not pull, thats a long ways for a pump to pull. if the fuel is the problem anyway.
 
johnny4ever said:
Inline electric on the passenger fender under the hood. When she quit the pump was hot to the touch. Unhooked it and cranked engine. No fuel from line. I took it to mean the fuel pump was tits up.

edit: Webber carb and the exhaust has headers.


J
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perry1987runner said:
well iv had this problem as well. my yoder 80 yoder has a 293 cam but what happened all the time is my pump kept loosing prime so i moved it closer to the tank and it quit. the inlines are made to push not pull, thats a long ways for a pump to pull. if the fuel is the problem anyway.
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Yeah sounds like the pump is toast. Does it have a clear inline filter? When I got my 80 there was so much crust in the tank it smoked the electric pump. I had to get a tank and a new pump and I ran a clear inline filter so I can look to make sure there's no junk in there. I would agree with Perry about the pump being closer to the tank. Mine is on the frame rail just in front of where the tank is. If you are up to it, it might be good to check the pickup tube in the tank. You'll have to drop the tank and take the screws (yes they used phillips screws) out. That was another issue with mine. The pickup was nearly completely clogged. We cleaned it out and it worked much better. I have a little different setup now since I swapped in a 22RE. Check out my build thread for more info.
 
NOT the pump.

Electrical gremlin. Replaced a fuse and got the pump online.

En route I reached down and touched the fuse. Burned the crap out of my finger. Finally the new bigger fuse blew but not before wisps of blue smoke floated from behind the dash.

Starting to doubt my purchase. What have I done? EDIT: Nah Im cool. Gonna fix this thing. Serenity NOW!
 
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It sounds like whatevever happened it is a failed component/circuit, this should be easier to troubleshoot than an intermediate failure.

If the axles were full of cake mix, A-pillars were welded with plate, suspension brackets sheared off and booger welded and the head cracks after 6 weeks then I would sell it.

Early generation minis look awesome, it looks pretty unmolested to me. I hate taking dashboards apart as much as electrical troubleshooting but I'd give it a chance.
 
ms018kmf said:
It sounds like whatevever happened it is a failed component/circuit, this should be easier to troubleshoot than an intermediate failure.

If the axles were full of cake mix, A-pillars were welded with plate, suspension brackets sheared off and booger welded and the head cracks after 6 weeks then I would sell it.

Early generation minis look awesome, it looks pretty unmolested to me. I hate taking dashboards apart as much as electrical troubleshooting but I'd give it a chance.
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I am not bailing on this project yet mostly because it will be my only transportation for a spell but also because IT LOOKS AND DRIVES AWESOME. It is a 22R with a webber carb.

It does have some P.O. wackiness.

Fuse block under dash has 2 jumpers for unknown reasons.

Electric fan on the rad is on the same circuit as the elec fuel pump.

Pics of engine bay to follow.
 
johnny4ever said:
I am not bailing on this project yet mostly because it will be my only transportation for a spell but also because IT LOOKS AND DRIVES AWESOME. It is a 22R with a webber carb.

It does have some P.O. wackiness.

Fuse block under dash has 2 jumpers for unknown reasons.

Electric fan on the rad is on the same circuit as the elec fuel pump.

Pics of engine bay to follow.
Click to expand...

That's probably why your fuse blew. Those need to be on separate circuits for sure. My mini had a similar problem. The PO just hooked up the fuel pump to the back of the fuse block. The fuse block would get blazing hot because of all the current it was pulling.
 
Is the electric pump stock/factory? I thought all the carbed 22R's had a mechanical pump, bolted to the head, run from the cam. Could you go back to a mechanical setup and eliminate the electrical hassles?
 
KLF said:
Is the electric pump stock/factory? I thought all the carbed 22R's had a mechanical pump, bolted to the head, run from the cam. Could you go back to a mechanical setup and eliminate the electrical hassles?
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I actually bought an elec and a mechanical. I need a schematic though, of the three lines from the tank so I know how to hook up the mechanical correctly.
 
johnny4ever said:
Indeed. I guess my truck is missing the hardlines on the fender well and I have a webber carb.
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You could probably do without the metal lines. What's the difference in the weber? Does it not just have an in/out like the factory one?
 
Lowe Toyota said:
You could probably do without the metal lines. What's the difference in the weber? Does it not just have an in/out like the factory one?
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Ok, but the third line from the tank? And where does the third outlet on the pump go?
 
johnny4ever said:
Ok, but the third line from the tank? And where does the third outlet on the pump go?
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The pump should have one in from the tank, one out to the carb, and one out to the return line I believe. (Correct me if I'm wrong KLF, 2ndgen, etc)
 
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