Engine/Transmission (1994 - 1998) looking for overflow valve repair kit part #

[**ICEMAN**]

can a repair kit(spring and ball) be purchased for the overflow valve?

i'm pretty sure i saw a part # somewhere but cant seem to find it.

 

[illflem]

Doubt if you can get parts, in fact the new "improved" overflow valve doesn't come apart. Piers has the best price, almost half what Cummins wants.

 

[**ICEMAN**]

illflem,,the oem valve in my 94 was a one piece valve.

the updated version i got 2 years ago was the take apart version.

are you saying that the newest version out there is back to a one piece valve?

 

[illflem]

The one I bought about 8 months ago from Cummins was one piece. Could it be they sold me an old one?

 

[PUMPERDUDE]

Lets all do a spring search.

Surely some TDR member somewhere can locate the right size spring for this application. Its not rocket science we're talking about. Probably about a 10 cents spring is costing TDR members to shell out big bucks. What do yall think guys?Lets keep this ball rolling till someone finds a source and let Cummins sell there "improved version" to some other sucker. I'm keeping my "outdated" simple 12 valve as long as I can

 

[Cooker]

It seems like the one I bought from Piers a few months back was a 2 piece version?



I've never seen a rebuild kit for a OF valve, but Piers has them on sale again this month for a great price.

 

[Joe G.]

ICEMAN,



The spring in mine got a little short so I made a shim out of a small washer. That was quite some time ago, over two years at least. Lots of miles. I didn't think it would last very long, but I still have good fuel pressure. In fact, it is a little on the high side.

 

[tschwab]

What are the symptoms of a bad overflow valve? What is Piers price? Are they hard to install?

 

[illflem]

A bad overflow valve will cause low fuel pressure which leads to reduced mpgs, lower power and harder starting. Piers price is $45. They are very easy to install, main thing is not losing the sealing washers, a rag stuffed under the valve prevents this.

 

[**ICEMAN**]

excessive white smoke on cold engine starts is another symptom.

i'm talking BIG CLOUDS here.

the last time i just pulled the spring out and stretched it a little and everything was normal.

i checked it now and the end of the spring is very worn(sharp as a razor) and the check ball will actually go up into the spring meaning very little pressure against the ball( if any).



pumperdude,,your right,,there's gotta be a spring out there that will work. why else would they have made it a 2 piece valve if the spring wasn't intended to be changed vs a new valve? the couple places i called said ,,(oh,,we have new ones but not a spring kit,,you sure you have a 2 piece valve??)

 

[Dbonzi]

spring?

I'm with pumperdude, We have got to be able to come up with a replacement spring somewhere.

Cummins gets their springs somwhere I wonder where?

 

[illflem]

If someone wants to play detective the trail starts in Brazil where the valves are made.

 

[SlyBones]

I thought these things contained shim or two. And I thought thats because these things are calibrated. The shims adjust for individual variances from spring to spring. -- Assuming so, even if someone comes up with a spring how are we gonna calibrate these ourselves? Or do we just change the spring and not worry about it?

 

[Cooker]

iceman,

If you have a bunch of white smoke upton startup, it could be your timing is off. After a cold startup (and the oil gets flowing) does is stumble if you rev it up to ~1200 RPM?





What is your fuel pressure at? Are you trying to solve the white smoke problem by assuming the fuel pressure is off? I'm not trying to insult you or tell you how to do something, I'm just trying to firgure out what you are trying to accomplish.

 

[**ICEMAN**]

cooker,,i'll check on the stumble in the morning.

no fp gauge in my 94. and yes i'm assuming it is the fuel press that is causing the clouds because a overflow valve replacement cured it a couple years back and just not long ago by stretching the spring a little. the cloud is only on cold engine starts and it is a eye burning very very rich fuel smelling cloud which goes away once the engine temp comes up.

is it possible that it is loading up after shut down and all the smoke is just from the eccess fuel in the cylinders??

any help in getting this problem solved will be greatly appreciated



i feel like this guyOo. Oo. one day 12v issues,,lots of days 24v issues,,one day 12 etc. etc.

 

[The patriot]

It would be more convenient to get the springs from where theyre actually made, but if you cant, I think a gun spring place may make some, if there's the demand for it.

Try Wolff springs in Pennsylvania.

Eric

 

[PUMPERDUDE]

Reguarding calibration

If people get away with just streching their stock spring back to a certain length or tension,maybe calibration is not such a big deal. I say try a couple of off the shelf springs till you see the right fuel pressure and bingo. 40-80 dollars saved. JMHO

 

[Cooker]

Iceman,



I would suggest you check your fuel pressure and get an idea of where you are at. If your FP is ok and you stretch the spring you could be increasing the FP. This may not be a good thing. Also if this is the scenario, increased fuel pressue could be masking another problem. JMHO.



Good luck,

Ryan

 

[LarryB]

I have been working on making an adjustable top bolt/spring retainer so we can adjust the spring pressure. Then all you need is a pressure gauge and a screwdriver to adjust it. If the spring gets a little weak, just turn it up a little. Should have a little more info next week. Biggest problem is the tight place it must fit.

 

[Deezul1]

Both my 96 and 97 have take apart overflow valves and the one I got From Piers is too. I think just the early ones were one piece.