Itinerant Air-Cooled

After a week of soaking and daily tests the CSV will not open and let anything through. As a result I decided to take Slowlanes offer and have him send me a CSV he had. I bench tested the promptly delivered part and it worked as intended. I installed it this morning. This was a great opportunity as the temps were below 30*. With the battery freshly charged and some coffee on me I pulled the trigger and................ BAM!!!! It fired up on the first compression! Never have I had this happen under these conditions, ever. I have owned this van for over 10 years and I have learned to avoid this situation as I figured it was pointless.

Yes this is not an essential part for most of you but here in Minnesota it is very handy. It seems the CSV is well liked in my world.

Thanks Slowlane

Sweet. Glad it worked for you.

Awesome!

Mulcheese wrote: CSV worked as intended.
It fired up on the first compression!
Never have I had this happen for over 10 years
Thanks Slowlane

Welcome to the wonderful world of a correctly functioning Volkswagen.
Colin

(Slowlane's a gem)

A caveat on the CSV there, Mulcheese: http://www.thesamba.com/vw/forum/viewto ... 2f1f864f29

Seems that a leaky CSV can be the cause of an engine fire.

I don't think the one I sent you is faulty, since it held air pressure exceeding 36 psi and wasn't wiggly in its metal shroud, but it's something to keep an eye on, considering that that part was in my parts bin for several years, and that it is now being subjected to temperatures much colder than it had seen in all that time. Rubber o-rings don't mix well with sub-zero temperatures. Just ask NASA.

In the procees of testing mine I did notice fluid leaking out between the flange and plastic injector when I supplied pressure. I think with all the cleaning I did the old corroded o-rings finally gave way of their seal and started to leak. Another check against using the old one. Looks like I could have prevented a possible fire.

Again SlowLane thanks for the CSV.

SlowLane wrote:A caveat on the CSV there, Mulcheese: http://www.thesamba.com/vw/forum/viewto ... 2f1f864f29

Seems that a leaky CSV can be the cause of an engine fire.

That thread is striking me as reckless and sloppy in its attributions . . . For example, this notion that an injector that is loose in the metal sleeve that bolts to the intake plenum could spray fuel around the distributor? Never. It is a one piece unit from fuel hose to injector tip, no fuel leak potential there. Damaged hoses, heck yeah.
Colin

Amskeptic wrote: That thread is striking me as reckless and sloppy in its attributions . . . For example, this notion that an injector that is loose in the metal sleeve that bolts to the intake plenum could spray fuel around the distributor? Never. It is a one piece unit from fuel hose to injector tip, no fuel leak potential there. Damaged hoses, heck yeah.
Colin

Plus full manifold vacuum is not exactly encouraging fuel to leak anywhere, even with a crack or break………

asiab3 wrote:

Amskeptic wrote: That thread is striking me as reckless and sloppy in its attributions . . . For example, this notion that an injector that is loose in the metal sleeve that bolts to the intake plenum could spray fuel around the distributor? Never. It is a one piece unit from fuel hose to injector tip, no fuel leak potential there. Damaged hoses, heck yeah.
Colin

Plus full manifold vacuum is not exactly encouraging fuel to leak anywhere, even with a crack or break………

See, that there is a point too, I think.

What do you think caused aerosurfer's fire?
Colin

Amskeptic wrote: What do you think caused aerosurfer's fire?

Over-tightening the hose clamps can crack the blue plastic CSV fuel connectors. It's easy to get caught up in the gorilla-fisting of hose clamps when many of the 7mm lines are metal and can take the force. That's my theory… He's even got hose clamps clamped on the intake runner boots, which don't need them. Lots going on on those poor plastic connectors, which no doubt get terrible yanks and tugs like carburetor nipples and wiring connectors all over the globe……

Don guessed that the "CSV came "un crimped" and just simply gave up the ghost. a tell tale sign is if the connector or T section where fuel passes through was wiggly." My spare on the bench here has about .002" of wiggle to it, and I wouldn't be surprised if the two thoughts were related.

Robbie

Amskeptic wrote:

Moi wrote: Seems that a leaky CSV can be the cause of an engine fire.

That thread is striking me as reckless and sloppy in its attributions . . . For example, this notion that an injector that is loose in the metal sleeve that bolts to the intake plenum could spray fuel around the distributor? Never. It is a one piece unit from fuel hose to injector tip, no fuel leak potential there. Damaged hoses, heck yeah.
Colin

'kay. Well, perhaps there should have been a secondary caveat about the veracity of the source.

My favorite theory is that he was using Gates Barricade J30R14 hose, which implies that he was using a 5/16" hose, of which I've posted my opinion before and is why I keep bleating on about the most-excellently-fitting Cohline 7.3 mm hose.

On the topic of rattly, wiggly CSVs, I believe the spare I have left is in just such a state. I'll see if I can dig it out and induce a leak with my trusty bicycle pump. If I can, then it's dissection time.

From Gates.......General-purpose 30R7 hose cannot handle the high pressures generated in a fuel injection system.
Also, today’s complex and aggressive fuel blends can damage standard rubber compounds found in 30R7
hose. The solution for fuel injection applications is Barricade Fuel Injection hose.

I don't know what "R9" is.

J30R9 is the SAE standard for low-permeation fuel injection hose specifically designed to address the aggressively corrosive properties of modern fuel formulations (Gates Barricade being but one example which meets the R9 standard). It is an occasional topic of lively debate over on TheSamba, perhaps more so on the Vanagon forum than on the Bay forum..

J30R14 is, IIRC, a standard for hose which can safely be immersed in gasoline, suitable for modern in-tank fuel pump applications. It wouldn't necessarily be "superior" to R9 for hose runs and fittings outside of the immersed application.

My amateurish reading of the J30R9 numbers suggests that Cohline 2240 hose exceeds the permeation requirements of that standard. And more importantly (to me, anyways), it comes in metric sizes more suitable to our vehicles than the inch-only sizes that J30R9 hose is commonly available in.

*Edit* - turns out my understanding of the 30R number was wrong. 30R9 is for "medium pressure" applications like our FI systems, but does not imply low-permeation. R14 is for low-pressure applications but with low-permeation characteristics. The Gates Barricade is a high-pressure low-permeation hose that exceeds the 30R14 specification.

SlowLane wrote:J30R9 is the SAE standard for low-permeation fuel injection hose specifically designed to address the aggressively corrosive properties of modern fuel formulations (Gates Barricade being but one example which meets the R9 standard). It is an occasional topic of lively debate over on TheSamba, perhaps more so on the Vanagon forum than on the Bay forum..

J30R14 is, IIRC, a standard for hose which can safely be immersed in gasoline, suitable for modern in-tank fuel pump applications. It wouldn't necessarily be "superior" to R9 for hose runs and fittings outside of the immersed application.

My amateurish reading of the J30R9 numbers suggests that Cohline 2240 hose exceeds the permeation requirements of that standard. And more importantly (to me, anyways), it comes in metric sizes more suitable to our vehicles than the inch-only sizes that J30R9 hose is commonly available in.

It all gets me dizzy. I get the correct size 7.3mm Choline for the FI vehicles, and I get the 5mm Choline from our fine parts purveyors and I drive. End o story. I also keep an eye on my fuel systems.
Colin

Amskeptic wrote:It all gets me dizzy.

Then p'raps you might want to switch to the low-permeation stuff to reduce the fumes.
Or back off on the GumOut...