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My two cents. Get rid of the electric pumps completely. Stock lift pump will support fuel for a whole lot of power. The electric pumps are just not necessary unless you're building a crazy engine, sled pulling, drag race etc and they just add complication. Sent from my iPhone using Tapatalk
I have a fuel gage there right now, but tapped into the "T" fitting. It registers 5psi with kennedy pumps only, and a mere 10 psi with the motor stumbling and filling my house with unburned diesel smoke...I did pull off the return pressure spring and visually check it. The plunger ball worked fine, spring was intact, I just didn't see anything wrong with it (Visually)
Quote from: husker77c on December 09, 2015, 08:11:29 AMMy two cents. Get rid of the electric pumps completely. Stock lift pump will support fuel for a whole lot of power. The electric pumps are just not necessary unless you're building a crazy engine, sled pulling, drag race etc and they just add complication. Sent from my iPhone using TapatalkThere is actually a lot of wisdom in that statement from a survival truck build perspective.I did not realize the need for much higher pressure when I added the Kennedy pumps. I was thinking it was more like a VE motor and I didn't need a stock pump, or if it ever gage up the goat, the Kennedy's would carry my happy butt on to Nirvana!
We replaced the stock injectors back in the holes to see if that made any difference, but It didn't really. Perhaps, it was a tad bit easier to start, but it blew smoke like a white dog and still rattled and banged about.We attached a fuel pressure gauge to the big T which splits the fuel entering the Pump into two routes, the stock one, and one from the frontWith the Kennedy pumps running, both of them we were seeing about 5PSI pressure
Quote from: Flyin6 on December 07, 2015, 07:33:04 PMWe replaced the stock injectors back in the holes to see if that made any difference, but It didn't really. Perhaps, it was a tad bit easier to start, but it blew smoke like a white dog and still rattled and banged about.We attached a fuel pressure gauge to the big T which splits the fuel entering the Pump into two routes, the stock one, and one from the frontWith the Kennedy pumps running, both of them we were seeing about 5PSI pressureDon, can you elaborate on the second line: "We attached a fuel pressure gauge to the big T which splits the fuel entering the Pump into two routes, the stock one, and one from the front" Not sure what you mean by the bolded part.
HEY DON, I'VE BEEN TALKING WITH LOCTITE ABOUT YOUR POST AND HE SAID THAT THE FACTORY CUMMINS MANUAL PUMP WOULD PUT OUT 20PSI, HE ALSO TOLD ME ABOUT SOMETHING HE HAD SEEN IN THE PAST THAT MAY BE PART OF YOUR PROBLEM, CUMMINS USES A INLINE FILTER BEFORE THE PUMP, (BUT) IT IS NOT A FILTER, ITS A SCREEN, HE HAS SEEN WHERE SOMEONE INSTALLED A FILTER INSTEAD OF A SCREEN AND IT CUT DOWN ON THE FLOW OF FUEL TO A POINT THAT IT DESTROYED THE INJ PUMP, SO WE WAS WONDERING IF YOU HAVE A INLINE FILTER BEFORE THE PUMP, IF SO REPLACE IT WITH AN INLINE SCREEN.
and after three pages, I now have a headache... Keep plugging along Don... :-\
running into something that sounds almost identical to yours. waiting on pins and needles to see what comes of this. haha
Quote from: swbhobie16 on December 11, 2015, 12:23:26 PMrunning into something that sounds almost identical to yours. waiting on pins and needles to see what comes of this. hahaWell the good news is you'll get plenty of practice working and tuning that Cummins!
That'll be one "torquey table" :o
Don.... all you need is a 5 gallon old steel jerry can...a valve stem and a couple fittings. Weld some bungs in for your fuel and return lines.... hook them up using rubber hose to the injection pump. Fill the can with #2, pressurize to 22psi with yr air compressor and start that truck......we need to get you up and running.
I just don't want to wind up missing a digit or limb. I can sometimes get in a hurry to get results.
Yea, well, it's Christmas, I have other things going on, and now that I've thrown hundreds of more dollars at it, it is still not running...Ever built a house, just to have it fall into a sinkhole the next day?I have lost a bit of interest in it because of all this, so best for me to just set it aside while I sort through what to do next.I don't know about the fuel pump, don't know about the integrity of the P-Pump, it may have sent metal particles to 6 new injectors, I can't understand how it wouldn't have proper pressure. I did everything as right as rain using good parts...Just too much. I'd better let it slip to page three or four with the way I feel about that motor right now...And the transmission is leaking profusely from somewhere...and I have some other pretty big issues. So yea...
I hear you Don. Things like this really get me thinking about maybe I should have listened to Norm and kept the VE. Then us guys giving you a hard time at every corner like good DOTs.I am WAY over budget for Christmas. Then with scouts we do food drives and get presents for kids, caroling and the lot.Have to ask though, did you verify the cam timing?
Quote from: Flyin6 on December 15, 2015, 10:35:01 AMYea, well, it's Christmas, I have other things going on, and now that I've thrown hundreds of more dollars at it, it is still not running...Ever built a house, just to have it fall into a sinkhole the next day?I have lost a bit of interest in it because of all this, so best for me to just set it aside while I sort through what to do next.I don't know about the fuel pump, don't know about the integrity of the P-Pump, it may have sent metal particles to 6 new injectors, I can't understand how it wouldn't have proper pressure. I did everything as right as rain using good parts...Just too much. I'd better let it slip to page three or four with the way I feel about that motor right now...And the transmission is leaking profusely from somewhere...and I have some other pretty big issues. So yea...100% understand, you will get it resolved. Taking a step back is good and you can tell people like me to pack sand until you get it fixed
Thanks...I'm OKBetter news...We wrote a pretty big check to those Christian Refugee kids for Christmas. Thanks to those of you who gave. I'll post up pics when we give them the stuff!
To bad we can't have assembly or reveille play when the window opens,,,,,,,,,,,,,,,,,,,,,,,