Jump to content
  • When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Bubbles In Kfish Injector Hose.


Cris.MTL

Recommended Posts

hey guys,

So I noticed that they are air bubbles in the fuel injector hose #1 from the Kfish to the injector while the car is running, I checked the hose connections and they are all tight.

Any idea what could be causing this or where I should start looking?

Thanks

Link to comment
Share on other sites

The kpump is a positive displacement mechanism, so air in the output lines suggests to me it is/was sucking air on the inlet.

 

Suggest you place towels around the #1 injector and carefully loosen the line at the injector end.  Fuel will bleed out, perhaps and hopefully taking the air with it.  Then see if it recurs.

Link to comment
Share on other sites

I've never seen any bubbles in those lines, but I can feel the pulsations when I put my fingers on them.

 

It does sound like you are leaking air into the pressure side of the line.  Have the sealing rings ever been replaced?

Jim Gerock

 

Riviera 69 2002 built 5/30/69 "Oscar"

Link to comment
Share on other sites

I ended up figuring it out last night, at least I think I did.

At first I cracked the line open as the car was running as per the Kfish manual states but there was no fuel leaking which I found strange. I then shut the car down and removed the line and the delivery valve, cleaned it up and reinstalled it. I fired up the car again and repeated the same test, loosen the hose fitting and check for fuel, at first once again no fuel leaked out but i decided to gently wiggle the hose and give the valve a bit of "love" and that did it. It started to leak fuel, I tighten the hose fitting and the air bubbles were gone,

Essentially I bled the line and now I have no more bubbles.

 

I don't know when the sealing rings were replaced last but to me it seems as if it was not seated properly at first. Would those sealing rings be available anyways?

Link to comment
Share on other sites

Just a reminder that the seals are supposedly "one time use" crushable steel.  I have had the problem with leaking fuel from the fitting due to an overly flattened seal.  No amount of tightening (watch it) would stop the leaking.   Now I keep a spare set.

73 Inka Tii #2762958

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • BMW Neue Klasse - a birth of a Sports Sedan

    BMW Neue Klasse - a birth of a Sports Sedan

    Unveiling of the Neue Klasse Unveiled in 1961, BMW 1500 sedan was a revolutionary concept at the outset of the '60s. No tail fins or chrome fountains. Instead, what you got was understated and elegant, in a modern sense, exciting to drive as nearly any sports car, and yet still comfortable for four.   The elegant little sedan was an instant sensation. In the 1500, BMW not only found the long-term solution to its dire business straits but, more importantly, created an entirely new
    History of the BMW 2002 and the 02 Series

    History of the BMW 2002 and the 02 Series

    In 1966, BMW was practically unknown in the US unless you were a touring motorcycle enthusiast or had seen an Isetta given away on a quiz show.  BMW’s sales in the US that year were just 1253 cars.  Then BMW 1600-2 came to America’s shores, tripling US sales to 4564 the following year, boosted by favorable articles in the Buff Books. Car and Driver called it “the best $2500 sedan anywhere.”  Road & Track’s road test was equally enthusiastic.  Then, BMW took a cue from American manufacturers,
    The BMW 2002 Production Run

    The BMW 2002 Production Run

    BMW 02 series are like the original Volkswagen Beetles in one way (besides both being German classic cars)—throughout their long production, they all essentially look alike—at least to the uninitiated:  small, boxy, rear-wheel drive, two-door sedan.  Aficionados know better.   Not only were there three other body styles—none, unfortunately, exported to the US—but there were some significant visual and mechanical changes over their eleven-year production run.   I’ve extracted t
  • Upcoming Events

  • Supporting Vendors

×
×
  • Create New...