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  #1  
Old 09-17-2012, 01:18 AM
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advice for helper pump for IP

I need to install a helper pump for my w124 300d 85 Im running 50/50 wmo mix and dont want to burn up the lifter pump.
Questions
Whats the fuel psi to the pump?
Will this pump work?
Carter P4070 electric fuel pump. It is rated 5 - 6 psi, 72GPH

(use this pump for my 7.3)

I dont need your input on wmo!! Just help with a lifter pump!!
Thanks
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  #2  
Old 09-17-2012, 07:42 AM
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I installed a 12PSI pump to push both veg and diesel.It helped fuel mileage as liftpump didn't pull down the engine.
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  #3  
Old 09-17-2012, 10:44 AM
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Quote:
Originally Posted by NuclearPayload View Post
Doesn't matter what pump you use, you'll kill the engine before the lift pump.
Nice! What part of him saying he didn't need advice on WMO, just a lift pump was so difficult for you to understand??
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  #4  
Old 09-17-2012, 02:51 PM
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Ok I will try a 12 PSI pump. Did you run just any cheap pump? Also did you modify anything else bigger lines etc? I have been running straight veggie and diesel mix 20/80 in the tank for a year runs great but I think the 50/50 is just to thick. On flat freeway its great its when I hit my 20 mile climb to my house.

Again Ty for your help Some people are so rude on this forum.

Thanks
Eric
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  #5  
Old 09-17-2012, 06:15 PM
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Eric,

You are correct, some people are on the rude side. Especially when it comes to mentioning WMO, WVO ATF, or anything else besides pure diesel. Want to really set folks off? Mention using red diesel (even if you specifically state you are only using it in the garage for troubleshooting in a 1-gal temporary tank) and watch the fur fly.

I for one run different combinations of WVO/D2 blends from time to time as I experiment with alternative fuels. I welcome those who are willing to try it and share their experience. I'm just glad we have a separate sub-forum here so we can discuss it freely without too much interference.

Glenn
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  #6  
Old 09-17-2012, 06:58 PM
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Glenn
Ty for your input. When I have questions about wmo I will check that link out. Should I have posted this in the other forum?
If this is the case can a medator move the post?
Thank you
Eric
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  #7  
Old 09-18-2012, 10:56 AM
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My apologies if I mis-read. It sounded like you were saying that it doesn't matter what pump he uses as using WMO will kill his engine long before the pump dies. Again my apologies if I mis-spoke. So many of us have been raked over the coals so-to-speak in other forums for even daring to mention alternative fuel use that we tend to see the sarcasm in any post.
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  #8  
Old 09-18-2012, 12:44 PM
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Quote:
Originally Posted by psaboic View Post
My apologies if I mis-read. It sounded like you were saying that it doesn't matter what pump he uses as using WMO will kill his engine long before the pump dies. Again my apologies if I mis-spoke. So many of us have been raked over the coals so-to-speak in other forums for even daring to mention alternative fuel use that we tend to see the sarcasm in any post.
I got that vibe from his post, also. It was misread, but I think a better choice of words could have been selected, especially after the OP gave the notion that he didn't need any negative thoughts on his choice of fuel. "killing the motor before killing the lift pump" definitely sounds negative.

From what I understand, a secondary pump is a good idea to remove parasitic losses from the stock lift pump, up to 30psi. That's when the pressure bypass opens.
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  #9  
Old 09-19-2012, 06:07 AM
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Thank you for answering the question. I posted under alternative fuels to not stir and argument. I'm gonna run a max 20psi pump.

Ty Eric
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  #10  
Old 12-09-2014, 06:53 AM
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Any electric lift pump from a diesel would do I suppose, I'm looking at converting to electrical lift pump also so I'm just looking for anything OEM, diesel and made by Bosch..
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  #11  
Old 12-16-2014, 02:57 PM
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I bought mine at napa,for diesel fuel.Its a solenoid pump.the best are FASS pumps made for veggie.
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  #12  
Old 12-16-2014, 05:37 PM
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Wow this post is old! I used and still use a electric lift pump on all my Mercedes diesel. Makes a huge difference at top end and starts. I can't remember but I think i used a 12 psi pump. It's sitting in my 603 that's getting a bigger turbo and menkien pump.
I just sold that car it's still on the road and I hit 3 deer! Ran everything through that tank and it's still runs strong!
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  #13  
Old 12-17-2014, 07:15 AM
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they have cheap facet pumps,some are purolator.Do not buy,they quit working as little as two weeks.
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  #14  
Old 12-17-2014, 07:25 AM
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Fattywagon

Fattywagons This is the link to fattywagon I have seen this pump in use on three applications two were veggie one just diesel. All three are still working for years now. If you arrow down the website it look like this.

Electric Boost Pump $85

pump

This pump comes in the Simple Benz kit. Helps with fuel delivery to the stock lift pump. Rated @ 9 PSI. Cost is $85 shipped in the Continental USA. Anywhere else add $20 with the shipping button at the bottom of the page.
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  #15  
Old 12-17-2014, 10:30 AM
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I think this is probably one of the best ones out there. I dont have one but it looks pretty good. The Raptor

AirDog Diesel Fuel Systems: Air Dog Diesel Fuel Systems On SALE!
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