2.5L Weber Carb Question (pics)....

[NC Rover]

So I came across a part on the carb that was loose. Unscrewed it and realized that the previous owner had put a lot of white sealant tape to keep it in as the treads don't match...the removed part (with male end) threads are smaller in circumference than the carb (female end). **Note in the pictures below, I have already removed the old white sealant tape from the threads and cleaned the needle.

I've had problems lately with the rover running too rich and sputtering...like its getting too much air, however I cannot find an air mixture screw anywhere on the exterior of the carb to adjust while the engine is running.

Can anyone tell me what part this is and what it effects? When I first exposed the needle, it had grey gunk crusted up all over it. I cleaned the needle really good as well as inside the removed part.

You can see the needle inside that is spring loaded. Does this automatically adjust the air misture? Sorry for the noob questions. Learning as I go. Just re-adjusted all the valves on my own so I'm coming along.

http://i32.photobucket.com/albums/d49/W8kbrder/Land%20Rover/IMG_6327.jpg

http://i32.photobucket.com/albums/d49/W8kbrder/Land%20Rover/IMG_6328.jpg

http://i32.photobucket.com/albums/d49/W8kbrder/Land%20Rover/IMG_6329.jpg

http://i32.photobucket.com/albums/d49/W8kbrder/Land%20Rover/IMG_6330.jpg

http://i32.photobucket.com/albums/d49/W8kbrder/Land%20Rover/IMG_6331.jpg

http://i32.photobucket.com/albums/d49/W8kbrder/Land%20Rover/IMG_6332.jpg

http://i32.photobucket.com/albums/d49/W8kbrder/Land%20Rover/IMG_6333.jpg

http://i32.photobucket.com/albums/d49/W8kbrder/Land%20Rover/IMG_6334.jpg

http://i32.photobucket.com/albums/d49/W8kbrder/Land%20Rover/IMG_6354.jpg

http://i32.photobucket.com/albums/d49/W8kbrder/Land%20Rover/IMG_6348.jpg

[Andrew IIA]

Your carb looks a lot like my Weber 32/34 DMTL on my IIA. I think the gizmo is a spark arrestor. If I disconnect mine it will run like crap and/or stall. I'll take look at mine afer work today and get back to you. There is a difficult-to-find adjustment screw, but I can't remember if it adjusts mixture or slow-idle speed. I'll report on that too.
Best regards, Andrew

[sven]

That is definitely a 32/34 DMTL.

Mixture screw is facing the front of the truck. If you're looking at it, it would be all the way on the right side at the base. You need a tiny/thin flathead screwdriver to adjust.

[NC Rover]

That is definitely a 32/34 DMTL.

Mixture screw is facing the front of the truck. If you're looking at it, it would be all the way on the right side at the base. You need a tiny/thin flathead screwdriver to adjust.

awesome. Thank you. I will look for it tonight. I'm still curious as to why the threads don't match (male end is way smaller in circumference than the female end) on the part I removed....

[NC Rover]

The 4th picture down from the top is a picture of the carb facing the front of the vehicle. Is the air mixture screw visiable in the picture? I swear I looked this carb over and couldn't find an air mixture screw.

Also, does anyone have a diagram of this particular carb?

[sven]

The 4th picture down from the top is a picture of the carb facing the front of the vehicle. Is the air mixture screw visiable in the picture?

Its below that orange wire. You cant see it in the pic but the screw is recessed into the base of the carb.

I attaced a pdf for ya, hope that helps.

[Andrew IIA]

Here the pic to go with Sven's diagram. Its sort of hidden; slot-head screw. Hmm.... your carb's a lot cleaner than mine :cool:.

Thanks for the diagram Sven, I didn't have a copy of that.

Best regards, Andrew
'63 SIIA 88"

[NC Rover]

Its below that orange wire. You cant see it in the pic but the screw is recessed into the base of the carb.

I attaced a pdf for ya, hope that helps.

Thanks for the diagram. That helps. However I'm not seeing the part I removed in the diagram...the part that is right next to the fuel line entrance.

I'm going to try and clean the jets in the carb as well as adjust that screw and see what I can come up with.

[NC Rover]

Here the pic to go with Sven's diagram. Its sort of hidden; slot-head screw. Hmm.... your carb's a lot cleaner than mine :cool:.

Thanks for the diagram Sven, I didn't have a copy of that.

Best regards, Andrew
'63 SIIA 88"

Ok the big thing in the top left of your picture with the wire coming out of it....what is the official name for this part of the Carb and what is its function/purpose?

For some reason mine will not stay in..it keeps falling out. Is it suppose to screw in place?

[Andrew IIA]

Hmm. Don't know the name for that and I agree its not in the diagram (we'll call it gizmo for now). the wire runs from the gizmo to the solenoid for the fuel shut-off valve, a safety thing. I think that if there's a fire (or fuel overflow ?) the gizmo's internal thingy moves/slides and disrupts the electrical contact with the fuel shut-off solenoid (thus activating it). I don't know what holds mine in place as I've never had to remove it.

Let us know what you learn :thumb-up:

Andrew

[sven]

The 32/34 that I worked on didnt have those solenoids.

Contact these guys for any weber parts. This was the only place in the US that had brand new 32/34 webers. They also carry all the parts, jets, kits, etc.

http://www.piercemanifolds.com/

[NC Rover]

The 32/34 that I worked on didnt have those solenoids.

Contact these guys for any weber parts. This was the only place in the US that had brand new 32/34 webers. They also carry all the parts, jets, kits, etc.

http://www.piercemanifolds.com/

I checked this site and didn't see any 32/34 DMTL. I only saw 32/36. Did you say a brand new one was listed on the site? Any idea how much they run?

[NC Rover]

I meant to ask....do you guys know which jets go to which hole since they are all different? I'm wondering if the previous owner took them out and replaced them in the wrong order? How would I know if they are in the wrong order? I remember someone mentioning about certain numbers on the sides of the jets. Any idea which numbered jets go to which corner of the carb?

EDIT: I took out each jet one by one from front to back and cleaned them. Also wrote down the number on each:

Front to back:
Jet 1 = 52
Jet 2 = F-30
Jet 3 = F-39
Jet 4 = 6U

Anyone know if these are in the correct order?

[Terrys]

Hmm. Don't know the name for that and I agree its not in the diagram (we'll call it gizmo for now). the wire runs from the gizmo to the solenoid for the fuel shut-off valve, a safety thing. I think that if there's a fire (or fuel overflow ?) the gizmo's internal thingy moves/slides and disrupts the electrical contact with the fuel shut-off solenoid (thus activating it). I don't know what holds mine in place as I've never had to remove it.

Let us know what you learn :thumb-up:

Andrew
The solinoid is an anti-detonation valve. It's intended purpose is to prevent run-on after the key is shut off. I hate that carb. I have never seen one jetted correctly for a 2 1/4 LR engine.

[Rineheitzgabot]

The 32/34 that I worked on didnt have those solenoids.

Contact these guys for any weber parts. This was the only place in the US that had brand new 32/34 webers. They also carry all the parts, jets, kits, etc.

http://www.piercemanifolds.com/

Mr. and Mrs. Pierce were the previous owners of my Bugeye. It's actually shown in their gallery on their website (on page 5, if your interested:D ).

This may be why mine runs so damn good. I think the Pierce people understand the Weber and all it's idiosynchrasies, pretty well.

Again, I love me Weber.

[sven]

I checked this site and didn't see any 32/34 DMTL. I only saw 32/36. Did you say a brand new one was listed on the site? Any idea how much they run?

You have to call them. They had 4 of them last time I spoke with them. We bought one a few months back for around 300-ish. These are universal 32/34 DMTL's with means they WONT be jetted properly for a 2.25 rover. You have to give them he correct jet #'s. I have these written down somewhere but cant find it at the moment. Might have been in the defender 90 Haynes manual??

Terry is right, worst carb ever. I tried rebuilding it twice. What a fiddly carb to take apart and put back together. I absolutely hate this carb as far as rebuilds go. But when its setup properly, it is a nice running carb.

They sell on ebay.uk too. But one guy wanted $130 for shipping :eek:

[sven]

EDIT: I took out each jet one by one from front to back and cleaned them. Also wrote down the number on each:

Front to back:
Jet 1 = 52
Jet 2 = F-30
Jet 3 = F-39
Jet 4 = 6U

Anyone know if these are in the correct order?

F30 and F39 are emulsion tubes. The main jet and air correction jet are attached to the emulsion tubes (top and bottom). You also have a accelerator pump jet and ventri tubes to check. But those require full disassembly to get to. I suggest waiting for a manual before you attempt this.

EDIT Found manual here complete with jet #'s: http://smg.photobucket.com/albums/v328/JohnRamsay/Carb%20pictures/

[NC Rover]

F30 and F39 are emulsion tubes. The main jet and air correction jet are attached to the emulsion tubes (top and bottom). You also have a accelerator pump jet and ventri tubes to check. But those require full disassembly to get to. I suggest waiting for a manual before you attempt this.

EDIT Found manual here complete with jet #'s: http://smg.photobucket.com/albums/v328/JohnRamsay/Carb%20pictures/

Any idea in which order they should go from front to back?

I don't believe I am capable of disassembling/reassembling a carb (as of yet). I've taught myself to do a number of mechanical fixes by reading the net and asking questions. The rover has beena great learning process. But I feel I've exhausted my skills for resolving the sputtering and rich running rover.

So far I have replaced the cap, rotor, plugs, plug wires, cleaned carb jets, adjusted valves on a warm engine twice, replaced all intake/exhaust gaskets as well as any leaks in the exhaust system, fixed any vaccum leaks, and adjusted timing forward and back with no positive results.

I can only guess the problem lies with the carb or the distributor.

[Andrew IIA]

The folks at Pierce are very helpful and rover knowledgeable (as you might expect). The would probably rebuild your carb if you sent it to them.

I'm no sort of mechanic, but my 32/34 has been running like a charm for years in all sort of nasty conditions: love it !

YMMV, Andrew

[sven]

Any idea in which order they should go from front to back?

I dont remember. Its one of those things that I'd have to be in front of to remember (wasnt my truck).


I can only guess the problem lies with the carb or the distributor.

Could be. But I'd check compression and better yet, do a leakdown test. You could have a burnt valve.

[NC Rover]

The folks at Pierce are very helpful and rover knowledgeable (as you might expect). The would probably rebuild your carb if you sent it to them.

I'm no sort of mechanic, but my 32/34 has been running like a charm for years in all sort of nasty conditions: love it !

YMMV, Andrew

I definitly have faith in it as it ran good at one point. I emailed them a day or so ago but have not heard back. Hopefully they can rebuild mine.

[Daurie]

I meant to ask....do you guys know which jets go to which hole

EDIT: I took out each jet one by one from front to back and cleaned them. Also wrote down the number on each:

Front to back:
Jet 1 = 52
Jet 2 = F-30
Jet 3 = F-39
Jet 4 = 6U

Anyone know if these are in the correct order?

I would guess the 53 jet and the F30 emulsion tube go in the 32 mm side and the 60 jet and the F39 go in the 34 mm side. You could blow some carb cleaner through the holes where the jets go and determine which hole feeds which venturi. That is assuming you can visually determine which side is 32mm and which is 34mm. I've never seen this carb so I'm just throwing this out there..

[NC Rover]

I found a brand new 32/34 carb on ebay but I'm curious to see what pierce will charge to rebuild the carb.

http://cgi.ebay.co.uk/New-Land-Rover-Defender-90-110-Weber-Carburettor-Carb_W0QQitemZ170276921472QQcmdZViewItemQQimsxZ200 81114?IMSfp=TL081114122004r27299

I also found this site to be a bit helpful...especially at the very bottom of the page.

http://www.glencoyne.co.uk/carbs.htm