I have a 2005 Land Rover LR3 4.4 & the fuel pressure accumulator on the fuel rail is leaking on cold starts. Any idea what would cause this to leak?
Can i replace/rebuild the accumulator without changing the fuel rail?

Since fuel leak started truck now has a misfire on cyl #4 with codes PO316 and PO304
i cant seem to find any info, Any help would be greatly appreciated!!

I am available to email or speak if needed.
Thank you
Erik

 

I've seen this once so far on the 4.4L, and once on a Freelander too. Have had limited luck replacing the O-ring on it.
Found a good forum post here: STR fuel rail o-ring - Jaguar Forums - Jaguar Enthusiasts Forum

 

The OP is my brother-in-law. He ended up getting a fuel rail assembly from a junk yard.

How do you get the accumulator off the rail? After we pulled the rail off, we tried to get the accumulator off and couldn't press all 4 tabs in at the same time to release it.

 

I have fixed this problem on my 2006 LR3. My LR3 was also leaking fuel on a cold start. The problem was the o-ring was leaking. I removed the part from the fuel rail by prying the 4 tabs with a small flathead screw driver. A picture of the part as removed is below. Then I got the blue o-ring sized. It was Parker part number 2-203. I could only get a black o-ring, but used it anyways successfully. First I installed the new o-ring onto the fuel accumulator and re-installed into the fuel rail. This didn't work, it leaked worse then before. Then I added a 2nd smaller OD o-ring under the proper sized o-ring. This pushed the proper o-ring up against the flaired end of the accumulator. This time when I re-installed it, no leaks. Be sure all 4 tabs are well hooked on the fuel rail. Again, I just used a small flathead screwdriver on the tabs. You can rotate the accumulator when installed in the fuel rail to make sure all 4 tabs are properly hooked.

The only cost is a new o-ring. Once you have the o-ring and the engine cover off, this repair takes under 15 minutes. Unfortunately I didn't take a picture of the double o-ring scheme before I installed it.

 

Hey cookae, I've got a leak in the exact same spot on a 2007 LR3. It drips about once every couple of seconds until it warms up, then stops. Is that about what you had. Anyway, where did you source the o-rings? Thanks. Tim

 

Yes, that sounds like the same problem. I removed the Blue o-ring from the vehicle and had it sized by Zatkoff seals in Farmington Seals, MI (they are an o-ring distributor). They were nice enough to just give me some for free, as samples. They said the Parker catalog number was 2-203. So the fractional size should be: Width 1/8 ID 5/16 OD 9/16.

Installing that o-ring alone made it leak more than before, but the double o-ring scheme worked. I can't find the 2nd o-ring size I used to space the main one up to the end. (I found it in a bin), but it was smaller diameter. So I would try: Width 3/32 ID 5/16 OD 1/2.

You can buy all o-ring sizes on Mcmaster.com if you don't have another source.

Good luck.

 

I found the 2nd o-rings, they are width 1/16, ID 5/16. I have extras, I can drop them in an envelope and mail a set to you if you want. If so, e-mail me your address. andrew_e_cook@hotmail.com

 

Awesome!. Thanks. I had the same problem as you when I put the regular o-ring in. I figured out that I had it inserted a little crooked so I took it back out, coated the o-ring in oil and re-installed straight. It seems to be working just fine so far.

In case anyone is interested and needs to replace it, the Fuel Pressure Damper or Accumulator is part # 2W93-9F775-AA. It's a fairly standard Ford part I believe.

 

Can you tell me what you mean exactly with the "flared end" of the damper [accumulator]? Which arrangement did you settle on? (Orange or Blue?)


Upper Flare



Lower Flare

 

So, this might be an already very old thread, but wanted to add a couple of comments to this problem. On cold starts (Colorado cold!) the pressure fuel accumulator/dampener of our LR3 does leak. The leakage will progressively be less and less till it stops as the engine warms up. I did the fix suggested here, it did reduce the problem, but does not eliminate it permanently. The stack is, looking at the accumulator in the orientation as is goes into the fuel rail, Parker V1163-75 dash number 203 top and Parker V1163-75 dash number 011 under. (Parker grades V1263-75, more common should also work especially if the temperatures in your area don't go very low).

This being said, what would be the really permanent solution to this problem? The original BLUE o-rings used by Land Rover are not very compatible with our ethanol oxygenated gasoline. (See image attached). The Ford pressure dampener Part number 2W93-9F775-AA, injector planet) seems to come with a single (maybe Viton) o-ring. Is the ultimate solution to machine a dampener from SS and plug the port as described in the Jags forum?

Ideas will be most welcome!!