Fuel leak on carb, what is it and how easy is it to fix? (1 Viewer)

[projektdotnet]

While trying to fix the thermostat problem I found a fuel leak to boot, anyone know what the leaking part is and how easy it is to fix it?

Pic 1: Leaking part close up
Pic 2: overall side shot of carb

also as you can see that leaks right down on the manifolds, so glad it didn't catch fire on the drive home

 

[mwebfj60]

That will happen if the float gets stuck open. Is the fuel level in the sight glass halfway or is it full? That same thing happened to me. Mine also bellowed black smoke and ran like s***..way too much fuel.

 

[projektdotnet]

Ok I'll check next time I get a chance. I can just disconnect the fuel pump and run the bowl dry if need be (this rig has a holley red electric pump)

 

[projektdotnet]

Also mine runs quite well once it's started, doesn't run rough or anything

 

[shaggyFJ]

Accelarator pump?

While trying to fix the thermostat problem I found a fuel leak to boot, anyone know what the leaking part is and how easy it is to fix it?

Pic 1: Leaking part close up
Pic 2: overall side shot of carb

also as you can see that leaks right down on the manifolds, so glad it didn't catch fire on the drive home

 

[Elbert]

something like the fuel cut valve...only place to buy is yota...approx $120...

 

[hank14]

It's the fuel slow cut valve.

Read post #13 from Jim the carb guru for a fix:

https://forum.ih8mud.com/60-series-wagons/106686-86fj60-leaking-fuel-carb.html

 

[Elbert]

yes I modified the 2nd valve I bought as it leaked too. I basically removed the linkage and the "guts" of the valve and used a bolt/screw to screw down in where the valve is (to seal it off).

Not the best of designs by toyota.

 

[projektdotnet]

It's the fuel slow cut valve.

Read post #13 from Jim the carb guru for a fix:

https://forum.ih8mud.com/60-series-wagons/106686-86fj60-leaking-fuel-carb.html

Thanks for the tip, does anyone have a good set of pictures documenting this or should I do that and make a nice pretty writeup for the FAQ of this mod? I'm actually not sure as to how to properly extract the guts from this part honestly

 

[projektdotnet]

Link for self to see if friend has right size tap and to pick up right size bolt to stick in there
https://forum.ih8mud.com/60-series-wagons/130815-carb-leak.html#post1734117

 

[projektdotnet]

Couldn't figure out how to gut the valve so I popped the arm off, jammed the valve upen and used a metal epoxy (quicksteel) to putty the thing open for good. need to adjust the fuel mixture, it has a hard time starting now where it didn't before, i'm thinking it might be a touch rich.

Now for the better news, no more fuel leak, the thermostat is properly sealed this time around (I screwed it up first time and it popped a nice little leak) and after 5 min of idling the guage started climbing and the heater started warming up.

 

[lcolon]

That is the better choice. Mine does the same thing when it is really hot outside... the mod is in my future. I did call C Dan over the summer to try to get one and unfortunately - it is discontinued. The only choice at this point is Jim C's mod.

 

[Elbert]

there is a picture somewhere here where I posted a pic of my modified valve (back when I had I-6), a couple of years old by now.

 

[projektdotnet]

It's holding and no more fuel leak so I'm gonna say it's good. I really need to mod the mix though, it still is way too high

 

[Elbert]

see this this...not the best of pics but what I ended up doing. As I recall I had to bump up the idle RPM..not long after that the V-8 Swap project started.

https://forum.ih8mud.com/60-series-wagons/197857-carb-fuel-leak.html

 

[projektdotnet]

Thanks, I'll have to grab another one of those and extract the guts properly at some point but my QuickSteel fix is working for now. One of the problems I have is a lack of tools, let alone cash to buy them, so I wasn't sure how to actually extract the brass part holding the guts in without hurting any mounting surfaces.

 

[Elbert]

yeah I understand on that note..I've been collecting tools for over 20 years..