[Andrew Allen]

Hey, I replaced my CP3 back during the winter months and early spring it started leaking very slight amount of fuel, now its leaking quit about around the gear housing thing on the back of the pump... its got the stage 1 BOP on the pump so are their any common problems that i can check for??

 

[modified03]

I have the same problem but having a hard time getting somebody to chime in too

 

[Andrew Allen]

Well that's good and bad to hear, good to hear I'm not the only one but bad we got leaky pumps... Is your pump stock or do you have some mods??

 

[Andrew Allen]

Ahhh nevermind, you have the arson 3 kit but I'm thinkin about ordering a new o-ring kit for it

 

[modified03]

how hard is it to put in a new o-ring??

 

[Motorsport Diesel]

Some of these pumps are prone to leaks, the materials expand at differing rates aluminum/steel. After a while they lose their seal. Some fatter O rings would most likely take care of it, if you can find some that will work.

 

[Andrew Allen]

Do you know where I/we can get some thicker O-rings??? I think II will only have the ones they put in their kits

 

[Dwitt0187]

i have all of the info in my desk i can get it tomorrow and give it to you if you would like i done mine 3 years ago and it hasn't leaked since.

Danny

i didnt read the whole post first sorry i can get the internal orings and the 2 seals that go in the front of the pump not the seal in the back.

 

[Andrew Allen]

i have all of the info in my desk i can get it tomorrow and give it to you if you would like i done mine 3 years ago and it hasn't leaked since.

Danny

i didnt read the whole post first sorry i can get the internal orings and the 2 seals that go in the front of the pump not the seal in the back.

You can not get the O-Ring seal for the alluminum housing on the back side of the pump??? anychance you know where i can get one

 

[cumminspower2]

mine leaked...had to replace it 20k ago its fine now

 

[modified03]

were you guys loosin any pressure when it was leaking. i've got about a 3in circle on the pavement everyday when I drive it.

 

[FarmRed]

Mind started getting wet on the bottom and I was smelling diesel. It was not enough to drip on the ground. My truck only had 35000 miles on it. My dealer put a new one on it. Mind is stock.

 

[northstarfire0693]

leaking....

What may be going on is during the winter the o-rings shrink a little. when the engine and fuel warms up the 0-ring then expands and the leak stops. That may be part of your problem. They could have also put the o-ring in w/o lube on it making it a dry packing. Just my 2c

 

[Andrew Allen]

So what do you guys reccomend to fix it?? New O-rings or put some kinda sealant on the one on it??

 

[Andrew Allen]

:drool2:

were you guys loosin any pressure when it was leaking. i've got about a 3in circle on the pavement everyday when I drive it.

I don't have a pressure gauge but I don't think I lost pressure, but I got the same 3" puddle every day, leaks most at idle

 

[northstarfire0693]

Try this....

So what do you guys reccomend to fix it?? New O-rings or put some kinda sealant on the one on it??

I would get a new o-ring and replace it. When you do...lube the o-ring in engine oil then install that may fix your problem...I hope this info helps you out.

 

[Andrew Allen]

Ok, I'll give that a try, but where can I get an O-Ring??? Do I just call up Industrial Injection??

 

[northstarfire0693]

Ok, I'll give that a try, but where can I get an O-Ring??? Do I just call up Industrial Injection??

I would try Cummins. You should be able to find a Cummins dealer in your area and its cheaper then going to the dealer.

 

[modified03]

i'm goin to replace mine and try that but it will be awhile before I get the chance to do it. Will a cummins dealer know what seals I need or do I need to get some numbers?