Latest fuel pump and relay pics

[CannonBall]

Guys, not trying to be redundant, but here are the latest photos on the fuel lift pump and relay installation. Fuel pressure is holding at 17 psi under all driving conditions. This is the fourth lift pump in 5 weeks. Am I eligible for some kind of award? Click to see photos here

 

[yogibear]

Hey Gordon, as usual, nice neat looking install. You have always had a neat wireing harness on averything you have put out! I was wondering about the noise of this pump, is it noisier than the Holly? Have you ran this one much yet? TIA

Larry

 

[CannonBall]

Larry, this pump does emit more noise than the inline Holley I had on but it is no more noisy than the OEM pump was. I did try it out today. I hauled two loads of water. The water tank is 450 gallons and I came up the airport hill 90mph and maintained 17 psi fuel pressure. This is the setting I have it set at. It appears to be working well.



I also like the fact that it is connected via a relay. The last pump I was using was connected via a longer wire harness. This pump is way more robust so the relay was the only way to go. I used a Bosch 40/30A relay purchased from a local Freightliner dealer for $3. 60.



This pump also has all of the build characteristics of a Walbro pump. I think it will last.

 

[yogibear]

Thanks Gordon, sounds good. Get some miles on that thing, we'll be watching.

Well Dale Jr. did well today, Dale Sr. can be proud!!



Larry

 

[PRout]

Looks good Cannonball,



Was curious whats mounted on the inside of the fender, inline w/ the relay? Is that a noise supressor to keep the pump from spiking the hot line?

 

[CannonBall]

Shortshift, what you see mounted on the fender is a fuse holder with a weathercap. The fuse inside is a 30 amp. It is protecting the 40/30 amp Bosch relay.



Coming out of the relay going back to the pump you will notice another fuse holder with a weathercap as well. There is a 10 amp fuse in this holder protecting the relocated, frame mounted inline transfer pump.



That is also 12G wire running from the battery all the way back to the relocated pump.

 

[PRout]

Ok, nice installation job. Looks like youve covered the bases, and used quality stuff.



Yea, the battery is a big noise suppressor anyways.



Sure hope this setup works out.



I know Im anxious about getting a decent pump setup before mine quits, as are lots of others. Mine's got about 55k miles on it, and by what people have been reporting, sounds like im one of the lucky ones that hasnt had a failure. . yet. . Took it in for the recall at 10k, and it was running fine at the time. We'll see if I can beat the timebomb.



One thing thats interesting, is I hardly ever go below half a tank. Usually over 3/4 full & drain from the inbed tank to keep the level up. Some people have mentioned a cavitation problem, and maybe keeping the tank full makes it easier to pull in fuel since the level is higher. Wonder if its related.



Anyways nice job, & thanks.

 

[Bigsaint]

Once again, nice job on the install and R+D, Cannonball.



I believe the the amount of fuel is related to the siphon flow, here's why. Yesterday I installed a new lift pump. The truck was parked on level ground with 1/2 a tank of fuel. It had not been run for about 8 hours. Typically, when I install a pump ( and this is my 4th now), I get a never ending flow from the inbound hardline as soon as I start loosening the fittings. This time the flow was pretty weak and it stopped after I plugged it and then opened it again, after maybe 30 minutes. Needless to say I 'keyed on' a few times before I cranked with the new pump. After it was up and running, I took a test drive and topped off the tank. Later, when I was rechecking for weeps from the fittings, I found one on the compression fitting to the hardline . Today, I removed the compression fitting and got a good bath in diesel. The flow was endless and with great volume, rest assured (note to self, always change compression fittings when below 1/2 tank). This is one of the reasons that I try real hard to stay above 1/2 a tank of fuel, now I'm going to shoot for keeping it at 3/4 a tank.



Scott W.

 

[csutton7]

interesting info there Big Saint on the siphoning --



c-ball--how much did this pump cost again---it will be interesting to read the data you compile..... chris

 

[CannonBall]

Csutton, the pump cost $145. 00 through Summit. As stated earlier my fuel pressure is set on 17 psi and that where it stays at all times. I am only mildly bombed. Original VA, DDStage1's and boost fooler.



I really think that these trucks only require one pump if it is of the right quality and located properly. I also favor the gerotor design as well. I am pretty confident this pump will last.

 

[Vaughn MacKenzie]

Godron, that looks like a great setup. I really hope that pump turns out to be bulletproof. Considering it has an integral regulator that is not a bad price for the pump.



What prefilter are you running there? It looks different than the Edelbrock job I bought. Do you know the flow rating? Also I like the blue hose, the only hose from Aeroquip I could find locally that had the specs for diesel fuel has blue braided cloth on the outside.



I installed a pressure gauge not long ago and found my fuel pressures are good and so I haven't rushed into installing my setup. The 61,000 mile stocker still gives me 13 at idle, and always over 9-10 at normal driving and 7+ at WOT (DD2s and van Aaken).



Vaughn

 

[fj40charles]

Very nice setup Gordon. Any plans to start selling this setup?



thanks,

Charles

 

[CannonBall]

Vaughn, the prefilter is the one that came with the holley inline pump I was running for a while. It is a low restriction 10 micron filter. The techs at Holley stated the flow to me but I can't remeber it off the top of my head. I do recall it is more than enough.



The hose is high quality. I ordered it through Jeg's. It is Russell Twist Lok. Fifteen feet was $41. 99. All the fittings are Aeroquip. I contemplated just splicing in the inline pump but decided against it.



Charles, I am putting together a turnkey wire harness kit that will work for any pump chosen. The pump will be the dealer's choice.

 

[fj40charles]

Gordon,



I was hoping you would offer the pump, hose and the fittings as a turnkey. Everything I purchased from you (boost module, idler pulley, and high idler) has been of very high quality at a resonable cost. I was hoping you'd make something that an average Joe (or Charles) could install and not have to worry about running back and forth to the hardware store...



Charles

 

[JTBMC]

CannonBall, what is the ID of the blue fuel line you are using.

I changed my lift pump Sunday afternoon also, on level ground with 1/4 tank of fuel. I did not leak a drop of fuel from the inlet fuel line. After Big Saints post it has me wondering why no fuel free flowing from the tank. After cycling the key the pump did not want to prime and the gauges read 0. I poured in 10 gallons of fuel and it then primed right up to15# on the inlet and 12 # on the outlet side of the filter. After topping off the tank the inlet side went up to 17# with the Cummins stock # 3990105.

I think I would like to try 1/2 inch ID fuel line from the tank to the Injector Pump to incress the fuel volume to the pump.

After new pump install my seat of the pants opinon is that my truck is quicker to accelerate and spool up.

TJ

 

[CannonBall]

TJ, the blue hose is 3/8. The same as the OEM. I am not sure that 1/2 inch would help unless you modified the pickup tube in the tank.



Is your liftpump in the stock location? I took a bath in fuel everytime I tampered with the fuel pump except when I removed the OEM pump from the engine. The fuel level at that time was just above 1/4 tank. The line was pretty much dry.



I think I will do some measuring tomorrow to see what the level of the OEM pump is in relation to the bottom of the fuel tank.

 

[JTBMC]

CannonBall

yes my lift pump is still in stock locatoin. I've been waiting for some one to invent the better mouse trap. ( My Laziness)

With the average of 10,000 miles to a pump failure based on my last 3 pumps I need to do some thing fast.

I purchased an extra pump today as a spare for my up coming trip to the San Juan National Forest in Durango, Colorado. We trailer our horses there every year for a month of trail riding and relaxation

TJ

 

[BIG BOB]

CannonBall,



What is the brand and part number of this new pump you got from Summit? How is it holding up?

 

[CannonBall]

Bob, I found out the Airtex makes this particular pump. They have a website. There wed address is www.airtexproducts.com The best place to purchase this pump is at Carquest. I think it can be had for $126. 00. The Carquest number is E8094. Summit whacked me 146. 00 plus shipping.



I do not have a whole lot of miles on this pump but for now it is doing what it is supposed to do. Fuel pressure is a constant 17 psi. I see in the latest issue of the TDR there is a fuel pump kit. I spoke with the guy on the phone and they are using the same Airtex pump that I have on twelve valvers. I do think this pump is going to be OK. Gordon.