ahhh super good stuff. thanks a million. I'll run down this list tomorrow . I did notice one of the clamps on the inline fuel line was wore through and I cut it off and re tightened it down, but now I'm suspicious of the rest of the hoses...
http://pfest.com The Preception Online Film Festival Online Streaming Film festival --- On Mon, 1/25/10, Dieselhead <126die...@gmail.com> wrote: > From: Dieselhead <126die...@gmail.com> > Subject: Re: [MBZ] Lost prime in traffic > To: "Mercedes Discussion List" <mercedes@okiebenz.com> > Date: Monday, January 25, 2010, 5:07 PM > You may have a combination of > things. a small air leak can become no fuel in > combination with a plugged tank screen. Here is my > suggestion: > > If you have more than 1/4 tank of fuel: on the left > inner frame rail the fuel and return fuel lines com up from > under the car. Loosen the clamps on both. pull > off the hoses and swap them. tighten the clamps. > Then try the primer pump. If the lines to the tank > are dry, it can take quite a while to pull fuel up to the > primer pump. > If this works and you get fuel, you have a plugged tank > screen. You will be able to drive it for a while at > least. If it sat through the summer, I would guess you > have algae in the fuel. You can buy and algicide at a > marine store. Use the shock level treatment > Carry spare filters, and change them when the engine is > starving. > > I am assuming this is a 123 300TD, since you said it had a > primer pump. The other part of the equation is to > change all the rubber hoses from the tank to the transfer > pump. a leak in the hose at the tank can also cause no > fuel. the hoses will let air in, but not leak fuel, or > only be damp, not dripping. If you have not done so > recently, you should drain the tank, pull off the hose above > the Right axle, remove the body plug. Then you can see > the hex of the fuel drain/screen/pickup. It takes a > big 3/4" drive socket to loosen. remove the plug and > screen. Clean the screen. Put a new oring on the > plug, reassemble. Then put on a new fuel hose. > the OE from Rusty is the best. Being cheap, > I cut the ferrules off the old hose and reuse the fittings > with a chunk of new hose and a hose clamp > > Then replace the hose for the return line. Check the steel > tubing for any signs of corrosion, especially under the > clamps. A rust spot can also let air in , but not leak > fuel. If you find rust scale, replace the steel > line. Then replace the hose under the hood from the > steel line to the prefilter, from the prefilter to the > transfer pump, and the rest of the rubber hoses. > > The other likely culprit is the primer pump. They > often leak, and if they leak, it allows air into the system > and that means fuel is not drawn from the tank. If you > have used it recently, and it did not leak fuel, bubble or > hiss, then it may be good. > > Good luck. > > > > Hi all1 > > > > I wanted to tap the collective wisdom of the group. > > > > Yesterday my 300td dropped off in traffic. just > going down the road and it acted like it lost fuel and > chugged out. > > > > I hadn't been driving it so I assumed it was plugged > fuel filters, but I swapped them out this morning but > nothing. > > > > Could the lines from the tank be fouled? Is > there an easy way to fix that (the car is stranded ont > eh side of the road as I figure this out.) > > > > > > I't feels like I have lost prime, as I pump the > priming handle onthe engine it doesn't seem to build up > pressure.... > > > > > > > > Any thoughts are welcome. > > > > > > > > > > > > > > _______________________________________ > > http://www.okiebenz.com > > For new and used parts go to www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
