few minor issues

[SNOWKING89]

Ok im posting this because i havent actually looked at it yet just seeing if anyone has any ideas.

I have a 97 f-250 7.3, at idle it has the tendoncy to fluxuate in rpm. only by about 100 rpm not much. i alsohave a fuel leak on the back side of the passenger side head. it appears to be the fuel return line but im not posative. any other thoughts or ideas would be greatly appreciated

[SNOWKING89]

ok i have looked into my fuel leak further. all of my rubber lines were replaced when i changed the lift pump. i still have this leak on the back of the block running down in between the trans and the flex plate. i thought it was either the return line on the back of the head or the two plastic gaskets for the lift pump return.. when i check out the truck niether one is leaking but let the truck idle in the same spot for 20 minutes and there is about 1 quart of fuel on the ground... i have taken a scope and looked all around the block and cannot find a thing... anyone have anyh other ideas.. it is driving me crazy cuz i go through about 100 gallons of fuel a week...

[White95f250]

When you replaced the pump you did new banjo bolt gaskets right? I know it may seem like a dumb question but I gotta ask. Is there any fuel in the valley or is it strictly from the back of the motor?

[SNOWKING89]

No I did not replace the gaskets. They looked good and not groves or anything... its just coming from the back of the block somewhere

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[SNOWKING89]

There is very little in the valley... the little bit that was left over from when I changed all the fuel hoses and the lift pump... its just damp nothing more

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[White95f250]

That's a start at least. I haven't been behind the head yet to fix a fuel leak but i'm sure somebody will chime in and help. Just remember there is a hole at the back of the valley that allows everything to drain back through there.

Is there anyway you can crawl back there or use a mirror to see?