LBourque

I would like to know a source for a KSB valve. Mine leaks and it's probably time to renew anyway.
Thanks,
​​​​​​​Lou

maybe368

Here is one for a '91.5 and later, not cheap though...Mark



5.9L VE Pump KSB Solenoid

j.fonder

you probably don't need the solenoid. is it leaking where it mates to the pump? there is a green viton O-Ring in there that can be found at your local bosch dealer for a couple dollars.

LBourque

​​​​​​​Looks like it's leaking while running from the front bronze colored nut/cap. Seems to lull after a start as well,but a drop every 10/15 seconds or so.
Thanks
Lou

1320Fastback

The front plug comes right out, nothing will fall out behind it.
Standard threading.
There is one o ring on it.

Just changed mine too.

crossy

so my understanding is the KSB works opposite on a NI compared to a IC version?
My NI,90 starts rough, and smokes white when cold.Runs great though. Is that the KSB or sticky injectors. the truck is very low mileage, but it sat for 20 years. The fuel system is plenty clean now and filters changed again, but she still starts rough for a 1st gen Cummins. thanks, Crossy

LBourque

Ok, got theplug out and no one near me has anything ,so any source I could use? Looks like two orings smaller one towards the aft part of the plug and larger one in front.

1320Fastback

I had a extra that fit from one if the VE kits I had but honestly I would go to Harbor Freight and get a 225 pcs o ring kit. I bet there is one in there that fits and it's only $7.00

After that find a Bosch rebuilder and soirce a factory one and change it out.

LBourque

Thank you

LBourque

NAPA had one. Replaced the plug,no leak.
Thanks for the guidance.
Lou

j.fonder

mind posting part numbers?

LBourque

I brought the plug to NAPA and tried a few and picked one that fit. My old o ring split up when I took it off and flew across the shop floor. I'm still going to try to locate the smaller aft o ring,maybe from a rebidding shop.

j.fonder

ah, guess i misunderstood. thought you found the whole plug at NAPA.