Almost a fire! Will my carb problems never end?!?!?

Westy78 · Post by **Westy78** » Sun Jan 21, 2007 4:54 pm

vdubyah73 wrote: I think I'd look for an additive that says it can help sticky valves before the diesel though.

Bill

Marvels Mystery Oil?

Post by **Amskeptic** » Sun Jan 21, 2007 8:04 pm

Sluggo wrote: can I just clean the carb up and use it till I get another system?
Or is it out of commission till then?

You can use it. Make sure fuel delivery is sealed up good, make sure air filters are secure, make sure #4 is not lean in comparison to other barrels, it is not just airflow un-synchronization that can cause backfires.

A sticky valve will give you sporatic clanks noticeable at idle with a little hiccough as it sticks open and gets tapped shut by a piston.
Colin

Post by **Sluggo** » Sun Jan 21, 2007 11:07 pm

Compression test revealed no problems. We got Bottomend's carbs ready to go. Had to do some mods to the linkage. I'll install them tomorrow.

hambone · Post by **hambone** » Mon Jan 22, 2007 9:20 am

At this point, would it behoove you to take it to a shop with a scope and they can dial in those carbs for ya? Or is the home-method good enuff?

Post by **Sluggo** » Mon Jan 22, 2007 11:26 am

hambone wrote:At this point, would it behoove you to take it to a shop with a scope and they can dial in those carbs for ya? Or is the home-method good enuff?

Not really. These carbs will only be on till I get some others. I'm looking at some 36 Webers or 36 Dellortos. Besides, I don't think it was the tuning. I think there is just something really wrong with these carbs.

chitwnvw · Post by **chitwnvw** » Mon Jan 22, 2007 11:40 am

What happened to 'Project FI'?

Post by **Sluggo** » Mon Jan 22, 2007 11:44 am

chitwnvw wrote:What happened to 'Project FI'?

On hold till I can find all the correct CIS-E parts.

DurocShark · Post by **DurocShark** » Mon Jan 22, 2007 12:26 pm

Sounds like you're stuck in a "throw money at it until it's fixed" loop.

Sorry man.

hambone · Post by **hambone** » Mon Jan 22, 2007 12:49 pm

Usually a vehicle at that point is symbolic of gross neglect. The happy news is once it's back to it's German ways it tends to remain that way for quite some time. Yer getting there, everything that you encounter now and fix properly won't come back.

Post by **Sluggo** » Mon Jan 22, 2007 12:54 pm

DurocShark wrote:Sounds like you're stuck in a "throw money at it until it's fixed" loop.

Sorry man.

I was. But these carbs are the only x-factor. I put as much into them as it would take to buy a new set. Engine rebuilt, new fuel system, New (to me) rebuilt heads. The only thing the same is the carbs. All of my problems except the dropped seat and oil pressure has been carb related. Same crappy mileage before and after the rebuild. Carbs have been rebuilt twice but they are the same carbs with the same problems no matter what I do. I'll finish hooking up Bottomend's Dellortos today. If I get the same crappy mileage, I know it's a problem with something else. If my problems miraculously disappear, I'll know it was the carbs.

The only real problem I have with these Dellortos is that there is no vacuum port for the dizzy and two fuel inlets on each carb. I have to figure out how to plug those up safely.

Post by **Sluggo** » Mon Jan 22, 2007 12:59 pm

hambone wrote:Usually a vehicle at that point is symbolic of gross neglect. The happy news is once it's back to it's German ways it tends to remain that way for quite some time. Yer getting there, everything that you encounter now and fix properly won't come back.

I know it was very neglected by a bunch of dirty hippies before I got it. I've had a lot of problems and have done a lot of work but I've also learned a lot and the Bus gets better with every repair. Like I said, the carbs are the last x-factor.

Post by **Sluggo** » Tue Jan 23, 2007 2:20 am

Here's da pics.

[albumimg]384[/albumimg] [albumimg]385[/albumimg] [albumimg]386[/albumimg]
[albumimg]387[/albumimg] [albumimg]388[/albumimg] [albumimg]389[/albumimg]

fido · Post by **fido** » Tue Jan 23, 2007 9:34 am

should be a port for the dissy on the left carb:

Post by **Sluggo** » Tue Jan 23, 2007 11:29 am

fido wrote:should be a port for the dissy on the left carb:

I found it. We added one to the other carb also.

Post by **Sluggo** » Wed Jan 24, 2007 11:44 am

Can't use Bottomend's carbs. The throttle (uh that rod under the carb) hits my vacuum pipe. I've already bought my Weber 36s. They should be here in a week. Went with these jets.
F11
55 idles
135 Mains
200 airs
30mm vents

Itinerant Air-Cooled

Itinerant Air-Cooled

Almost a fire! Will my carb problems never end?!?!?