How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Jason Your Own Question
Jason
Jason, ASE Certified Technician
Category: Car
Satisfied Customers: 28
Experience:  ASE Certified, 5 years experience working on most makes/models
27898116
Type Your Car Question Here...
Jason is online now
A new question is answered every 9 seconds

Can I run 2 fuel pumps in series. For example, first one pumps

This answer was rated:

Can I run 2 fuel pumps in series. For example, first one pumps from 0 to 60PSI and the second from 60 to 10psi. I'm running a supercharger on a little 1100cc 4cyl engine and am using a 12:1 fuel management unit. I'm going to need aprox 120psi at full boost. The other reason is this is a 4x4 vehicle that we use for exploring in the desert. Getting stranded 50 miles from noware can be deadly. Two pumps gives me one if one goes out as one will run the engine fine without boost.
Thanks Len
You can run two pumps in series, but a 60 PSI pump may not have a housing built to handle 120 PSI on the outlet side. You should contact the manufacturer of the pump to see if it's capable of higher pressure than what it's rated to create. Another down-side to having two pumps in series is that the second pump may not be able to pull fuel through the one that's not turning. You may be able to run with just one, but with lower fuel pressure you will run lean and that can damage the engine. What I would do is run a single 120 PSI pump and carry a spare. Jegs has one at http://www.jegs.com/p/Magnafuel/MagnaFuel-ProTuner-In-Line-Electric-Fuel-Pumps/1040704/10002/-1

One other thing to consider, that's not part of what you asked, is that when offroading you should always have a second vehicle with you just incase something breaks on yours.
Jason and 10 other Car Specialists are ready to help you
Customer: replied 7 years ago.

Thank you. It's our intention to carry a small motorcycle on the rear just in case. We do carry enough supplies and water for at least 1 week including camping and keep warm gear along with backpacks in case we need to hike out. Living in the west near the desert, it's not uncommon to hear of someone lost or stranded and dying of lack of water. Happens several times a times a year through out the west. Think I'll go with the 120 psi pump. Someone sujested the two pumps but I wans't real sure of it.

Thanks again

Lenny.

Related Car Questions