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Help Me Sort Out My Weber Issues

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I'm not at my wits end with my Weber , yet, but I can see it in the distance - lol.

I have a Weber and I'm getting an awful idle.

I took it all apart this evening, cleaned it with water and soap (just kidding, carb cleaner) and rinsed it of with compressed air.

Prior to this the primary was squirting gas into the venturi?? even at idle, which I knew was not right as I have a Weber on the truck adn I watched that one run too.

So when I hooked it all up together, it ran fine. Had a slight stumble off idle.

10 minutes later it started pissing gas again at idle into the main/primary area with the ensuing sorry idle.

Any thoughts, rumors, conjectures, insinuations, are all welcome at this point. I am ready to try anything as we have a British car show locally this weekend. it won't be any fun if I showed up in a Mazda truck now would it? :iagree:
 
I think I am having a fuel delivery issue.

Here is what happens, at idle it seems fine but under load the car let's out a backfire through the carb and then dies. I unhooked the gas hose after the filter and there is a steady high velocity of volume coming out.

I think I may need to choke it with a regulator.

What says yee about my symptoms?
 
Which type of Weber? side draft(DCOE) or Downdraft, which on LBC's is usually the DGV style.

First make sure the fuel pressure is between 1 1/2 psi to 2 3/4 psi.

Make sure you have a competent filter to keep any contaminant away from the needle and seat..
 
If it's leakin' down the primary you either have too much delivery pressure or somethin' funky goin' on at needle/seat. Float height or a bit of smeg in the seat? If you cleaned all out and checked float height, all you have left is delivery pressure too high. If you get one of those cheezy "adjustable" regulators, TAPE it to 2 PSI for the show then replace it with a Holley one after.
 
RonMacPherson said:
Which type of Weber? side draft(DCOE) or Downdraft, which on LBC's is usually the DGV style.

First make sure the fuel pressure is between 1 1/2 psi to 2 3/4 psi.

Make sure you have a competent filter to keep any contaminant away from the needle and seat..
Click to expand...

Sorry Ron, I know the devil is in the details.

It's a downdraft DGV 32/36.

I installed a filter from AutoZone. I have in my hand both a fuel pressure inline gauge and a regulator. I will report back.

I also suspect that perhaps my advance is getting stuck .
 
DrEntropy said:
If it's leakin' down the primary you either have too much delivery pressure or somethin' funky goin' on at needle/seat. Float height or a bit of smeg in the seat? If you cleaned all out and checked float height, all you have left is delivery pressure too high. If you get one of those cheezy "adjustable" regulators, TAPE it to 2 PSI for the show then replace it with a Holley one after.
Click to expand...

I didn't check float height, curriculum vitae is not yet so lofty. I will read up on the proper process though.
 
You'll be fine, certes. It ain't like replacin' a camera on Hubble. :wink:
 
Okay what kind of nitwit forgets to clip the other side of the distributor cap?

So that fixed my backfire issue BUT I still have the stumble coming out of idle.

I put a vacuum pump to my advance. It moves but only slightly so I am thinking they are only supposed to move slightly??

I know I have crud in the tank so I am pulling the tank tomorrow morning and cleaning it out. How do you Guys clean your tanks, how do you do it?

I installed a fuel pressure gauge and it is reading 1.5 psi I think due to sediments in the line.
 
I just noticed one of the clips on my distributor was not snapped on right a few days ago. Had been weeks since I had been fiddling in that area but thankfully it wasn't causing any problems.

When I need a tank cleaned it goes to the radiator shop to be cleaned properly by professionals. The tank I have now had about a quarter inch of goo in the bottom that was gumming up my valves when I was trying to get my B on the road. Radiator guy had little issue with it, though it took a bit longer than usual. Bcliff has told me a fun story about using a match to get a birds nest out of a 30's Ford gas tank with his brother when they were kids though... I think he would suggest you don't go that rout.
 
Uh, 1.5 psi is adequate pressure. Don't worry about that. I recommend you contact Jeff Palya at Advanced Distributors. He has a very good website, and is quite congenial on the phone(from what I hear) about your distributor...

If it needs repair/resurrection, he is the one to do it..
 
Okay..I seized the day and success is mine.

I had taken of the manual choke assembly and placed it in the MG B archive bucket for later disposal. Unbeknownst to me that would be a decision that would come back to haunt me.

Anyways why pissing around under the hood, I noticed that when I shut the choke butterfly slightly the idle up miss would disappear.

I also had an opportunity yesterday at The British Emporium British Car and Motorcycle Show to pour over a few MGs and there I saw the folly o fmy ways.

I hooked it back all up yesterday and Nigel is all well again.

Thanks for all your collective assistance.
 
regularman said:
If you have a higher gear in the car and are running lower RPMs on the highway, you might want to check this site. I have a DGV on my midget and have a dead spot between idle and the main jet picking up when in high gear and easing into the throttle. https://www.bradleyrestoration.com/techni..._of_the_dg.html
Click to expand...

An astute recommendation Guvnor. A quick glance and I know I will be spending some time reading the whole site. Well put together.
 
I did not have that size drill in my drill index. I ended up ordering a set of small drills and a thing called a "pin vise" that holds the small drill and allows you to drill a hole by hand. Got the whole deal off ebay for 10 bucks or so. I will be trying that soon.
 
regularman said:
I did not have that size drill in my drill index. I ended up ordering a set of small drills and a thing called a "pin vise" that holds the small drill and allows you to drill a hole by hand. Got the whole deal off ebay for 10 bucks or so. I will be trying that soon.
Click to expand...

Please post a link when you get a chance.
 
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