A Ruined Afternoon

[klinetime574]

After school I went and got some hose to finish redoing my vacuum lines. Started it up, then it died when my foot wasn't on the gas. Started it again kept it running with some pedal, drove it down the street. It ran like normal, crappy. Then I pulled into the driveway popped the hood. Tweaked with the distributor barely at all, then it died. Put the distributor back to where it was. Got in, would not start.

So now I got no clue what is wrong with this thing. It had a vacuum whistle before. So I fixed them. I didn't hear the whistle while it was running for the 5 minutes it ran. But now it won't start.

The Weber carb seems to be leaking gas from the seams. Which is really frustrating. Also I noticed while I had the air cleaner off that the throats don't open up until more than half depressed on the gas pedal. Is that wrong? Makes me really want to return it. (If they would even take it back.)

Here are some pictures of my vacuum lines and the leakage on the Weber.

Thanks for listening to my frustration. Help a fellow cruiser (dummy) out.

-Alex

 

[inkpot]

Howdy! Not too sure if it will help, but it looks like you have an open brass compression fitting on the top of the intake manifold, a couple of inches forward of the carb. That's one heck of a vacuum leak. John

 

[klinetime574]

Howdy! Not too sure if it will help, but it looks like you have an open brass compression fitting on the top of the intake manifold, a couple of inches forward of the carb. That's one heck of a vacuum leak. John

It's plugged with an allen head plug. Short and stubby.

 

[chitown40]

If it's leaking gas from the seams, my first guess is that the float valve is stuck open and you're flooding the carb with fuel.

 

[brian]

Also I noticed while I had the air cleaner off that the throats don't open up until more than half depressed on the gas pedal. Is that wrong? Makes me really want to return it. (If they would even take it back.)

the butterflies that you can see, is the choke.
the actual throttle plates are at the very bottom of the carb.
sounds to me like it's the choke that needs some attention.

loosen the three phillips on round white plastic looking thing, on the valve cover side of the carb.
with the cleaner off, turn the white plastice thing till the chokes open.
being in tx i doubt you would ever really need it anyway.

 

[klinetime574]

If it's leaking gas from the seams, my first guess is that the float valve is stuck open and you're flooding the carb with fuel.

Can the float valve be accessed from the outside of the carb? I know nothing about the Weber 38.

the butterflies that you can see, is the choke.
the actual throttle plates are at the very bottom of the carb.
sounds to me like it's the choke that needs some attention.

loosen the three phillips on round white plastic looking thing, on the valve cover side of the carb.
with the cleaner off, turn the white plastice thing till the chokes open.
being in tx i doubt you would ever really need it anyway.

Okay that makes more sense. Thanks brian.

What really gets me on all of this though is, it was working fine before. It ran a little off but it started up and shut off accordingly. Almost seems like my vacuum leaks were a good thing even though thats highly improbable.

 

[brian]

Can the float valve be accessed from the outside of the carb? I know nothing about the Weber 38.



Okay that makes more sense. Thanks brian.

What really gets me on all of this though is, it was working fine before. It ran a little off but it started up and shut off accordingly. Almost seems like my vacuum leaks were a good thing even though thats highly improbable.

floats needs the top cover removed to access.


if the choke is closed, it will be rich.
the vacuum leaks were giving it more air to even out the rich condition.
no leaks, back to a rich condition.

the choke is somthing that needs setup when the carb is freshly installed.

 

[veeLC]

I second that motion

 

[klinetime574]

I love this forum. Thanks much brian. Again.

 

[klinetime574]

BRIAN IS AWESOME.

Just got back in from the garage. Took about 5 minutes to flop open the choke. I think it has been permanently stuck for a while... haha

She fired right up. First try. Prolly about 80-85 degrees in my garage right now.

And she even left a present on the floor.

I wiped some of it up with my finger. No strong odor. I have no clue what it is. The car was running for maybe 3 minutes. Oh well. I'm just happy she started.

BRIAN RULES.

 

[brian]

soot picked by the condensation, and then blown out the pipe.
get used to it.

i have a temp range of 20*-100*F.
don't have the choke hooked up on mine, nor have i needed it.

 

[GLTHFJ60]

I always feel bad when I'm in a parking lot, fire up the truck and get splatter on the next guys car.

 

[klinetime574]

Yeah I have accepted it. I try to avoid our cars though. I push it out of the garage by myself before I start it haha.

Tech: Brian since I have you here how do you have your rig timed? And for everyone. Do you have any suggestions for me on how to time this thing?

 

[GLTHFJ60]

For a desmogged rig, start at 10* BTDC and advance until you hear pinging, then back off a degree or two.

 

[brian]

i like my webers, but they are not without their faults.
nothing that can not be fixed, or rather corrected, but you need to be willing and able to tinker with them.