trik396

Well got under the truck and first thought I had an oil leak somewhere. Nothing ever on the ground in my garage. Just noticed stain(s) on front of front diff. Did clean all areas and found what I thought was oil, but figured out it must be diesel mixed with road grime on crossmember. Oil filter tight and no stains. Then I saw a couple drops of fuel on bottom of ecu(m)?...What I finally found is the only place that was wet with diesel was the fitting on the high pressure line that leads up to the injectors.

What should I do? Give it a good tightening? Anyone else notice a leak in this location? Nothing dripping when I started her up at idle. Couldn't check any other rpm by myself. Will check again after work. Advice please..!!!

Mr. Jimmy

My 03 had the same leak. I snugged it up and it stopped, didn't want to take truck to dealer and wait for 2-3 days for them to say they couldn't find the leak

Sprinter17

What Mr. Jimmy said, just don't go crazy on it.

trik396

Thanks guys. That's what I thought. I don't want to go to the dealer at all...

I'll give it some tightening and see what happens.

03 ant a hemi

If that doesnt seal it up then replace the washer/seal with a new one. Should only be a couple of bucks.

rich2500

there are no seals on the high press. line just the return and feed lines

Dorkweed

There's no way this could be the result of your Walbro set-up; could it??? I don't see how, but you never know!

trik396

Just got thru tightening most of the fittings on the common rail. After I got in there and really looked and felt around, I think the leak was coming from either the overflow valve or one of the fittings that led to an injector. I was able to "snug" the top of the valve and one fitting probably between an eighth and a quarter of a turn (which was surprising, because I was using an open ended wrench and not alot of leverage). The other fittings that I could reach did not move.

Interesting things to note:

1- I'm losing more of my hearing as of today, or whatever I did GREATLY quieted down the engine. Not as much clatter. Just alot quieter and smoother sounding.

2- Does anyone think that this is just something that wasn't tightened enought at the factory OR maybe just worked its way loose a tiny bit? Do you think that is why some of us SWEAR their engines get louder after awhile?
I have only 11,000 miles to date.

Hopefully this took care of the problem
Thanks for your help...