*STRANDED* Lift pump died, can I bypass it with an electric unit?
 

I am stranded and I am supposed to be on the road, could I pick up an electric lift pump from a mc parts store and use it in the mean time?

Something low pressure like this? http://www.oreillyauto.com/site/c/detail/AIX0/E8090.oap?ck=Search_N0515_1192519_2976&pt=N0515&ppt=C0025

Just for reference I have the later style bosch mechanical lift pump that has no hand primer, photo here: http://catalog.peachparts.com/searchitem.epc?lookfor=000+090+26+50&s_temp_transfer_key=_3AS16VALE


I am open to getting it at pepboys, oriley, autozone. If anyone has any good recommendations if this will work.

Thanks,
Taylor

as long as it can keep up I would hazard to say yes.

No one has tried it on your year and model.

Electric Fuel pump
http://www.benzworld.org/forums/w123-e-ce-d-cd-td/1474392-electric-fuel-pump.html

http://www.peachparts.com/shopforum/diesel-discussion/260908-83-sd-primer-pump-issue-post2291021.html?posted=1#post2291021
From my notes don't know were I got this from:
Electric Fuel Pump
14 psi is ok. I used the Carter pumps at Autozone.They have a 6psi,9 psi,and a 14 psi.I like the 14 better.I use it to push diesel or wvo.
Carter pumps.I use the soleniod style becase I run wvo in the summer.A rotor and vane type would not last with grease or bio.Its a universal fuel pump,inline,the Carter.Faucets last one to 2 days.

Is there a 616 or 617 lift pump that will work in a 601? There might be a member with a spare close to you.

Sixto
87 300D

PSI of lift pump?
 

So, what is the PSI of the lift pump? 15psi?
I want to match my aux pump psi to the lift pump.
The aux fuel pump I'm using now is only 6-9 psi.

Thanks,
Jeff

If he had the Factory manual they might give a pressure.

On the Fuel Injection Pumps that have a Lift Pump with no Hand Primer the Fuel Pressure Relief/Overflow Valve is set up so that some Fuel always bleeds through an orifice and is supposed to take the Air with it through the orifice.
That would mean that part of the pressure is also bleeding off.

So with his particular Fuel System the amount of Flow may be more important the pressure.

If his Lift Pump is no good an Electric Fuel Pump ought to at least get him started. After that it is a matter of test driving to fine out if there is a loss of performance.

In theory an Electric Fuel Pump with a max pressure of 7 pounds is not supposed to be enough pressure for my 617.952. But, in that Benzworld thread I think that is what he used is Electric Pump on.

In a previous post I posted a thread were some one rebuilt their newer style Lift Pump. I believe he said the kit was around $40-$49. But, to get out the Oulet Valve you need to at least partially grind off the Crimp that holds it in.

Here's what I found in my Tech Data book.

I'm going to switch my aux fuel pump to a Airtex E8153
to bump it up to 15 psi for my 617. Hope this helps the
OP with his 601.

Jeff

I guess in the chart good Lif Pump can deliver (at cranking speed) greater than 150cc delivered in 30 seconds.
So in the manual they are worried about Flow not pressure.

Some one can convert the 150cc delivered in 30 seconds to Gallons Per minute and that will tell you if and Electric Fuel Pump will deliver enough Flow to start the Engine.

Since there is no specs for the Lift Pump flow at normal driving speeds the only way to know is to buy an Electric Fuel Pump and try it.

In my 617 the only reason I can think of not to simply rebuild the Lift Pump (I have already done this; cheap and not hard to do) is the minor extra convenience when priming that an Electric Fuel Pump would give.

The 617 type Lift/Fuel Supply Pumps have a different type of Valves in them and will apparently last 25+ years before needing to be rebuilt again.

The Lift/Fuel Supply Pumps on the 60X Engines have Disc Vlalves similar to the ones inside the Vacuum Pump or on the Old Style Gasser Fuel Pumps before Fuel Injection came along. And, apparently the Disc Valves do not hold up as well.

FYI
 

Per WIS RA07.01-6-0101-45X.

Fuel delivery capacity is critical.

Engine: OM601, 602, 603

Rate of delivery at 150/min minimum at least 150 cm^3/30 s



Per WIS RA07.01-6-0101-46X

Minimum fuel pressure from filter housing to injection pump:

At idle speed > 0.3 bar = 4.4 psi

At full load > 0.5 bar = 7.25 psi


Have a great day.

Interesting information.
That certainly is with in the pressure range of more than a few of less expensive Electric Fuel Pumps.

I hope tylorsyn gets back to use on what he did.

Yes
 

FYI only:
I have at customer request/demand installed a high volume 30 psi electric lift pump several times.

I run a 12 psi carter pump on my 617.Boy it makes the car fly up mountains.

The pump from the 1995-2003 Ford Powerstroke series is the best match for our engines and chassis. Simple 12v, constant flow vane pump and plenty of flow to maintain 30psi across the operating range.
http://inlinethumb14.webshots.com/41...425x425Q85.jpg

"Pulse" type lift pumps need to be avoided.
http://paceperformance.com/images/F22574387.jpg

How is this the best match?

A- its a 60-80 psi pump, well beyond the stock lift pump
B- its 2-400 dollars

Its too expensive a pump to misapply in this fashion. Better to find a cheaper carter or wahlbro pump that is closer to the correct pressure

The pump does not control fuel pressure. As stated prior, its flow that matters.

New. Good used ones can be had for under $150.

You mean those noisy little junk pumps that always die or leak on the Cummins engines, killing the VP44 pumps? No thanks.
FYI, thats the same thing used on the Powerstroke.