Top end job without lifting engine?

[Thomas Bichler]

Is that possible? BMW manuals says you have to lift engine. Is that because there is little/no space to get at the headers?

S38B38

///Thomas

M5T -92

[Bill and Jan Klemme]

Group,

Smelled gas after parking the other day, and tracked it to one of the
two hoses coming out of what looks like a round filter, on the drivers
side near the lower part of the engine. Easy enough to get at, but I'm
unsure of what I'm dealing with. It doesn't leak until I start the car
so it seems to not have pressure in there. I just want to remove it, cut
off the inch where the clamp squeezed it to death, and reinstall.

Assuming that works without losing too much fuel, does something need to
be done to get rid of air in the line? Also, is that actually a fuel
filter which should be replaced as long as I'm there? Looks too small to
be a filter, so maybe it's a regulator of some kind.

TIA,

Bill K

[Ben Trigg]

Sounds like the evap valve that regulates fuel vapors from the tank. Removing the valve would just hurt fuel mileage, particularly on start-up (I've read it can be noticeable). Potentially would also be bad for the cats. Why not just replace the hose and valve?

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[Gary Derian]

If it is in the fuel supply line, it is a pressure damper.  M5s have one in the tank on top of the pump, and in the feed line between the frame and the engine.  Neither one are needed.

Gary Derian

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[Gary Derian]

Air will automatically bleed out.  If there is enough hose, you can cut the end and re-install, but it might be a good idea to replace it.  Any auto parts store 5/16 inch fuel injection hose will work.  Replace the return hose next to it also, and the hoses between the tank, the fuel filter, and the fuel and return lines in the back.

Gary Derian

[Jeff Gomon]

I agree with Gary.  I removed mine when I replace all the rubber fuel lines with the fabric braided lines used in the 335 turbo cars.  They have them for the vacuum lines as well. You can buy it by the foot at the dealership. Have them look up the part number for the 335 cars and use that.  It is designed to handle he higher under hood temps the turbo cars generate and is a nice upgrade for not a lot of money.  The fabric also helps protect the clamps from cutting into the rubber hose material.  

Have a Happy Holiday everyone!!!  

Here are my two M cars just before a BMW CCA driving tour this summer…

D. Jeff Gomon

Sent from das iPhone Acht

On Dec 19, 2022, at 12:59 PM, Gary Derian <gade...@gmail.com> wrote:



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[Bill and Jan Klemme]

Thanks all. It's cold out there in the garage so I'll just do the quick
and dirty "git er runnin" for now and change out complete lines with
braided ones in the spring.

Jeff, nice pictures. Which one is more fun to drive? I like the white
one best!

Regards,

Bill K

[Thomas Bichler]

Fyi - one can do this with the engine in car. I'm halfway and will start assembling any day now. Many hours and lots of patience is required though.

///Thomas