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Matt (Doc175)
Posted on Monday, January 20, 2003 - 08:39 pm:   Edit Post Delete Post Print Post

I have a 1967 IIA 88" with a Weber 2x barrel carb. I recently adjusted the RMP's but now I get a fuel smell, especially at idle. I think I need to adjust the fuel mixture but I do not know how or what to look for. I have the expanded view of the carb so I can follow along some good guidance. Thanks
 

paul londrigan (Neversummer)
Posted on Tuesday, January 28, 2003 - 11:37 pm:   Edit Post Delete Post Print Post

did the carb come with, or can you get your hands on a weber manual? all you need to do is adjust it so it runs a little less rich, at the same time though, I would remind you that its a 67, i have the same truck, and its preobably gonna smell a little bit. unless its really bad then i say get a manual and crank um down to run lean.
 

Paul Grant (Paulgrant)
Posted on Wednesday, January 29, 2003 - 06:23 am:   Edit Post Delete Post Print Post

Matt, I had a 2bbl Weber 32/36 DGV on my SIII for awhile and I never was able to get it to run satisfactorily. No matter how small the jets and I changed every last one of them, mine always ran rich. The 32/36 DGV is really too much carburetor for our 2.25L petrol engines. I've often wondered if the 32/34 DMT(?) found on 2.5L petrols would work any better. In the end I threw in the towel and bought a Zenith from Rovers Down South and the truck has been happier ever since. BTW, I also had the single barrel Weber on my truck when I bought it and it seemed to work pretty well too.
 

Paul Grant (Paulgrant)
Posted on Wednesday, January 29, 2003 - 06:25 am:   Edit Post Delete Post Print Post

I should also mention that if you are really committed to this carburetor you should try to buy the Haynes Weber book. You can usually get one on eBay for about $15, a worthwhile investment.
 

Leslie N. Bright (Leslie)
Posted on Wednesday, January 29, 2003 - 07:55 am:   Edit Post Delete Post Print Post

I've heard of others that pitched the 2-barrel Weber, too, from having trouble getting them to decently run the engine...

Those that have had success, almost invariably have an improved motor, 2.5 cam, better exhaust, the smaller jets in the carb, etc. etc... Stock 2.25 motors that're feeling their age just don't seem to like the 2-barrels....

-L
 

todd slater (Toddslater)
Posted on Wednesday, January 29, 2003 - 10:20 pm:   Edit Post Delete Post Print Post

Matt,
You do have a fuel pressure regulator on your weber set up...don't you ?
 

Paul Grant (Paulgrant)
Posted on Wednesday, January 29, 2003 - 11:14 pm:   Edit Post Delete Post Print Post

Todd, I tried that trick too. I still my Holley low pressure fuel regulator kicking around in a box somewhere. Fuel pressure was so low coming off my fuel pump that the regulator did nothing and I still had raw gas dumping from the exhaust. Like Leslie said in his post, without doing real work to our tired little 2.25L lumps, the Weber is just too much carb for it to handle.
 

todd slater (Toddslater)
Posted on Thursday, January 30, 2003 - 10:20 am:   Edit Post Delete Post Print Post

The regulator is usually the first place I start when trying to help folks with their webers, often overlooked and often you can get away with it....for a while until the liitle beauties say they've had enough of the high pressure. I run webers on my TVR (triple 40 DCOE's)and my 911 (twin 48 IDA). I have CR Pro fuel pressure regs on them both...dialed into @ 3 lbs. if I recall correctly. Many people have problems with webers, me hell I love mine, truely infinitely adjustable. I gotta believe that even in a tired 2.25 lump you outta be able to lean/adjust it down so it won't be dumping fuel in. Matt, what model is your weber (and how old) and I can fax over some pages from the weber bible for you.
 

Paul Grant (Paulgrant)
Posted on Thursday, January 30, 2003 - 05:14 pm:   Edit Post Delete Post Print Post

Todd, I have a friend who is a Ferrari mechanic and he could not understand why I was having such difficult with my carb. When I told him about my intake icing over he just gave me a blank stare. It was at that point that I threw in the towel. Oh, I don't think my regulator even saw 3 lbs. of fuel pressure, it was more like 1.5-2 lbs. so the low pressure regulator didn't have anything to regulate!
 

Matt (Doc175)
Posted on Thursday, January 30, 2003 - 07:44 pm:   Edit Post Delete Post Print Post

In all honesty, I do not know if I have a fuel pressure regulator. How can I tell? Thanks for putting up with this. I am trying to learn but I am a novice at this.
 

Paul Grant (Paulgrant)
Posted on Thursday, January 30, 2003 - 08:08 pm:   Edit Post Delete Post Print Post

Mike, a fuel regulator will be between the fuel pump and the carburetor. It's a small metal box with fittings for the fuel line not to be confused with any inline fuel filter you may be using in addition to te sediment bowl on the pump. Believe me, whatever help I can offer is my pleasure. I was in your shoes only three years ago.
 

todd slater (Toddslater)
Posted on Thursday, January 30, 2003 - 09:46 pm:   Edit Post Delete Post Print Post

If I can remember I'll bring the digi home and take a shot of mine...in the interim here is a pic of the most commonly used the CR Prohttp://www.gowerlee.dircon.co.uk/Fuel%20Accessories.html
I've seen tis happen too many times...you can get away without one for a while....but it does catch up to you.
 

Matt (Doc175)
Posted on Friday, January 31, 2003 - 07:19 pm:   Edit Post Delete Post Print Post

Where can I fid out more about the pressure regulator? Cost, where I can get one, installation etc.
 

todd slater (Toddslater)
Posted on Friday, January 31, 2003 - 07:21 pm:   Edit Post Delete Post Print Post

Here a pic of my circa 1984 CR Pro Fuel Pressure regulator...there are other manufacturers out there. Look for it or similar where Paul said.

cr
 

todd slater (Toddslater)
Posted on Friday, January 31, 2003 - 07:43 pm:   Edit Post Delete Post Print Post

Matt,

Any good speed shop should be able to hook you up...here is a link just in casehttp://www.piercemanifolds.com/accessories.htm
 

Paul Grant (Paulgrant)
Posted on Friday, January 31, 2003 - 08:46 pm:   Edit Post Delete Post Print Post

Try Summit Racing (www.summitracing.com.). I think that's where I got my Holley. I want to say it wasn't much more than $25 a few years ago.
 

Matt (Doc175)
Posted on Monday, February 03, 2003 - 07:02 pm:   Edit Post Delete Post Print Post

Thanks for all the help

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