Where's the Diesel Foam?

Inet_CRD · **Posted:** Mon May 01, 2006 3:07 pm

I haven't seen any posts about problems with filling the CRD and getting lots of foaming. I've filled mine up about three times now and am still amazed that when the fuel filler clicks of, that's it. I can't squeeze in even another 1/2 liter and the dash fuel gauge is pinned to the F. My 92 Cummins will take at least 10 liters more fuel after the pump kicks off, although you have to feed it in slowly or it will burp it up.

Does anyone know if this is by design or do others have to use the slow feed method to get a 100% fill?

IndyCRD · **Posted:** Mon May 01, 2006 4:56 pm

You know, I've noticed this same thing. Before, on my VW, I had to fill, vent, fill, vent, etc. several times. This fill tube on the Jeep must be vented pretty well so that it fills quickly.

Hey, not to hijack the thread...but does anyone know off hand if the larger high volume nozzles at the truck stops will fit in the fill on this Jeep? I've only filled up a few times now and they have been the smaller nozzles and I keep forgetting to look.

Cowcatcher · **Posted:** Mon May 01, 2006 6:12 pm

Makes you kinda go "Hummmmm?" doesn't it. When you find out why let me know!

oldnavy · **Posted:** Mon May 01, 2006 6:18 pm

Big high volume nozzles don't fit, nothing bigger then the old unleaded nozzle will work. It just takes the small and medium nozzles.

It appears they designed the tank to self vent, just like my old '83 MB 240D, when auto shutoff engages that is it. The new VW's have been redesigned to self vent, no more ventectomy's needed. Man I have done a ton of those at GTG for TDI's. The went from 14.5 to 17 gal and old Passat TDI wagons would go from 18 to 25 gal. Imagine driving a car that got 55 mpg and held 25 gal of fuel. :shock:

Goglio704 · **Posted:** Mon May 01, 2006 6:20 pm

Large is a relative term, but I've seen plenty of nozzles that wouldn't fit the CRD. I have noticed the minimal foam and ease of topping off also, but I'm not sure whether to credit the Liberty or the fuel? It is welcome in any case because fuel foaming was an annoying quirk that you just had to live with on many older diesels.

oldnavy · **Posted:** Mon May 01, 2006 6:34 pm

Goglio704 wrote:

Large is a relative term, but I've seen plenty of nozzles that wouldn't fit the CRD. I have noticed the minimal foam and ease of topping off also, but I'm not sure whether to credit the Liberty or the fuel? It is welcome in any case because fuel foaming was an annoying quirk that you just had to live with on many older diesels.

Forgot to mention biodiesel does not foam, and if you are using a mix like B20 or greater you will have very little foam compared to regular D2 fuel.

IndyCRD · **Posted:** Mon May 01, 2006 7:58 pm

oldnavy wrote:

Big high volume nozzles don't fit, nothing bigger then the old unleaded nozzle will work. It just takes the small and medium nozzles.

Well that kind of stinks! :cry:

I always enjoyed getting all the strange looks at the truck stop when I pulled up between the big rigs on the OTHER side of the truck stop in my little Golf! I guess those days are over. I'll have to fill up over there with the cars now.

Cowcatcher · **Posted:** Mon May 01, 2006 8:09 pm

About 1/3 of the time I fuel at a store in the country where I also sometimes drive my John Deere tractor or carry a couple of 5 gal cans. The cans and the tractor always foam at the same pumps. The Liberty doesn't.

TDI4BY · **Joined:** Sun Apr 02, 2006 11:56 pm **Posts:** 644

My 03 dodge would foam and take forever to top off, the first time I fueled the Liberty It overflowed when I tried to top it off. :oops:

Inet_CRD · **Posted:** Mon May 01, 2006 9:28 pm

Well two thumbs up for DCX, self venting makes the CRD just like a gasser to fill up! Unfortunatley I haven't found any stations that carry bio diesel in any form and in fact the liberty came from the factory with zilch for fuel (must be only USA models that get the B5 fill). I was kind of hoping that it would have the B5 in it just to see what it smelled like when it burned. So even on pure mineral diesel, no foam.

Guest · **Posted:** Tue May 02, 2006 7:58 am

You can get an extra 1.5 gallons in after auto shuf off if you try for another 5 to 10 minutes. This has been my experience every time in my effort to make it into the "500 mile per tank" club. So far, my best is 491 miles on a tank, but you better have the filler neck chalk full of diesel, and then, yes, foaming is a pain.

Also, I fill up at the slowest auto fill setting on the pump handle to minimize the foaming.

oldnavy · **Posted:** Tue May 02, 2006 8:07 am

alljeep wrote:

You can get an extra 1.5 gallons in after auto shuf off if you try for another 5 to 10 minutes. This has been my experience every time in my effort to make it into the "500 mile per tank" club. So far, my best is 491 miles on a tank, but you better have the filler neck chalk full of diesel, and then, yes, foaming is a pain.

Also, I fill up at the slowest auto fill setting on the pump handle to minimize the foaming.

I have never waited that long, will give it a try with a Jerry can. I have tanked up on several ocassions from Jerry cans, that will get you to the neck for sure. I will take a couple of cans and put a measured amout like a gallon in each and see what happens next time I fill up.

retmil46 · **Posted:** Tue May 02, 2006 12:07 pm

Same experience here, an extra 1 1/2 gallons if I take the time to cram it in.

But with one additional piece of info - I can only do that with B20, every time I've tried it with regular diesel it just keeps clicking off immediately.

As was said, probably the difference in foam. I'll top off the tank in the CRD, then fill each of the 4 jugs until the foam is up to the neck. By this time the foam in the tank has died down and I can easily get in between 1/2 to 1 gallon before it clicks off again. By the time I've finished cramming the tank, the foam in the jugs has died down and can easily top them off to the 5 gallon mark.

RTStabler51 · **Posted:** Tue May 02, 2006 12:32 pm

TDI4BY wrote:

My 03 dodge would foam and take forever to top off, the first time I fueled the Liberty It overflowed when I tried to top it off. :oops:

me 2.

marauderer · **Posted:** Sat May 06, 2006 11:03 am

I have only used B100 other than #2 D.

The B100 has zero foaming and the #2 in the CRD is great compared to my other diesels.

It is easy to fill all the way up the neck if you have a slow speed nozzle.

RFCRD · **Posted:** Sun May 07, 2006 7:44 am

oldnavy wrote:

Big high volume nozzles don't fit, nothing bigger then the old unleaded nozzle will work. It just takes the small and medium nozzles.

It appears they designed the tank to self vent, just like my old '83 MB 240D, when auto shutoff engages that is it. The new VW's have been redesigned to self vent, no more ventectomy's needed. Man I have done a ton of those at GTG for TDI's. The went from 14.5 to 17 gal and old Passat TDI wagons would go from 18 to 25 gal. Imagine driving a car that got 55 mpg and held 25 gal of fuel. :shock:

Just wondering if anyone has cut out the flapper and opened it up to accommodate a big nozzle. Looks like my friend's VW had something like this done to it. Too chicken to go at my CRD with a sawsall. Have plenty of places around with small nozzle diesel pumps so hasn't been an issue yet.

oldnavy · **Posted:** Sun May 07, 2006 9:04 am

Thought about using the Dremmil tool for that, but I haven't ever had the problem of too big a nozzle for opening. I would not use the high flow unless no other option available, and I haven't ever seen a fuel center that didn't at least have one standard or small nozzle for PU's and auto's.

RFCRD · **Posted:** Sun May 07, 2006 9:21 am

oldnavy wrote:

Thought about using the Dremmil tool for that, but I haven't ever had the problem of too big a nozzle for opening. I would not use the high flow unless no other option available, and I haven't ever seen a fuel center that didn't at least have one standard or small nozzle for PU's and auto's.

Ran a few long, all-nighter trips in this VW, was glad it was punched open a couple of times. His was already open when he bought the car used. Whoever did this kind of butchered it, a little gagged around the edges. Assuming this is the "ventectomy" I read about.

oldnavy · **Posted:** Sun May 07, 2006 10:00 am

RFCRD wrote:

oldnavy wrote:

Thought about using the Dremmil tool for that, but I haven't ever had the problem of too big a nozzle for opening. I would not use the high flow unless no other option available, and I haven't ever seen a fuel center that didn't at least have one standard or small nozzle for PU's and auto's.

Ran a few long, all-nighter trips in this VW, was glad it was punched open a couple of times. His was already open when he bought the car used. Whoever did this kind of butchered it, a little gagged around the edges. Assuming this is the "ventectomy" I read about.

Hummm, done a lot of trips over the country from KC to the East Coast and only one ocassion did I have no choise but to use the big nozzle. I'm not saying there are no stations without a small or medium nozzle, just that I only ever saw one place like that and it wasn't a major fueling place.

That is not ventectomy. When doing the ventectomy you remove the probe like thing that opens the vent system in the gas tank neck when gas cap is installed. I believe they did away with this problem starting with '04 model year TDI's.

gsbrockman · **Posted:** Sun May 07, 2006 10:03 am

TDI4BY wrote:

My 03 dodge would foam and take forever to top off,

This is why your '03 Dodge CTD has the top-off problem :

The shape of the 3rd GEN Dodge fuel tanks are not very conducive to topping off.....never had any problems with my 2000 Dodge RAM 2500 Quad Cab CTD (2nd GEN).

You need to get up with Dave Kelly (Spooled-up) over on the TDR site and purchase his fuel tank vent kit mod.

http://www.turbodieselregister.com/foru ... k+vent+mod

Dave and I installed it in my 2003 Dodge RAM 2500 Crew Cab CTD 4x4 and no more freezing of the family jewels in the winter time topping off the tank. I could spend 8--12 minutes after initial click-off pumping in an extra 3.5---4.5 gallons. Now it takes about 45 seconds until it runs out the filler neck; much less foaming, too.

Greg

Where's the Diesel Foam?

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