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Discussion Starter #1
Hi, I had just replaced my IP and LP and installed vulcan big line about a week ago for the 216 code and a dead pedal. ran awsome but started acting up again(dead pedal) this past weekend. cleared codes from previous pump, drove around retest and damn it the 216 is back!!! what gives? could it be a bad IP, i got it from midwest FI and there product seems pretty good. Any suggestions, there tech support and another member said they have seen the keyway getting damaged can cause this. What does everyone think?
Thanks,
Scott
 

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Tech Specialist
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How did you tighten the pump up to the block? You use the big nut on the front or the 4 nuts on the back? Midwest is a great company. They'll do ya right.
 

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Discussion Starter #3
I snugged the four nuts first, then torqued the gear nut to spec, then hit the nuts and the bracket with my electric makita impact. I thought it installed fairly easy but that was my first one ever so I have nothing to base it off of.
 

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You did it right. Hmm. I'd listen to midwest. They know their stuff. See if they'll warranty it for ya.
 

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Wats the FP @. DO you have a gauge to see. Any diff when you get the DP?
 

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Mod Maniac
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I bought 6 injectors from them for one of my big trucks with a detroit 60 series.
within a month 3 of the 6 went bad. put reman detroit to replace the 3 and it has been perfect ever since.

I have not had good luck with mwfi.
 

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My first thought is fuel pressure. I would get a gauge on it if you don't have one. That is the only real way to tell what it is doing under load.

The 216 code is telling you the pump is worn out mechanically and can't advance to full timing. With only a week on the pump and assuming a proper install, you either got a bad pump from the supplier or you have no fuel pressure and caused it to fail.
 

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Discussion Starter #8
I'll put a gauge on it to see whats goin on and I'll update later after work. Thanks
 

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Mopar1973Man.Com
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My first thought is fuel pressure. I would get a gauge on it if you don't have one. That is the only real way to tell what it is doing under load.

The 216 code is telling you the pump is worn out mechanically and can't advance to full timing. With only a week on the pump and assuming a proper install, you either got a bad pump from the supplier or you have no fuel pressure and caused it to fail.
:agree2:
I agree with Dad... Fuel pressure is very important to these pump lack of fuel presure can kill a VP44 in a short order...:thud:

MINIMUM FUEL PRESSURE IS 10 PSI @ WOT!!!

 

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IT's more common for a Stock Style lift pump to fail at any time.... if the new LP failed you could have cost yourself an IP.

This scenario makes me want to spread the word about aftermarket fuel delivery solutions.

Notice I am not selling a brand, I just have seen this so many times it makes me sick to see people getting the rough shaft when installing a new VP
 

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Mopar1973Man.Com
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:agree2:
I agree 100% to the above comment!

The Stock Lift pump and lack of fuel pressure is the number #1 killer of VP44 pumps!
 

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Discussion Starter #12
I did a pressure test, it drops to 8psi WOT from 13 @ idle. I pulled the pump because midwest wanted me to check the keyway and make sure it wasn't damaged. I didnt bother to notice the keyway from my original pump so I have nothing to reference it to. All I notice is it looks like the key way is built with a little offset or it is tweaked. Dont know?? I see everyone recommends 10psi WOT, will 2psi make that much of a difference? Im thinkn of getting a higher capacity lift pump. can i get just the pump?
 

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I hope that means you used the key that came with the new pump but just didnt take note of the old one. They are all matched to the pump. There is a measurement stamped on the plate that corresponds to the key (like .080 etc) with the wrong key the pump WILL be out of time and throw codes/run poorly. What fuel pump are you running??
 

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Mopar1973Man.Com
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I did a pressure test, it drops to 8psi WOT from 13 @ idle. I pulled the pump because midwest wanted me to check the keyway and make sure it wasn't damaged. I didnt bother to notice the keyway from my original pump so I have nothing to reference it to. All I notice is it looks like the key way is built with a little offset or it is tweaked. Dont know?? I see everyone recommends 10psi WOT, will 2psi make that much of a difference? Im thinkn of getting a higher capacity lift pump. can i get just the pump?
Here is the Dodge TSB for Volume testing the lift pump...
Lift Pump Diagnostics

After test a few around here at 8-9 PSI with stock plumbing here is the results...

Test #1


Test #2


Test #3


The big failure of these pumps are the plastic hub inside the rotor. It just glued in. The diesel fuel breaks down the glue and the plastic hub starts to spin. Then you got a loss of pressure... As seen here...



This white plastic hub should not spin nor fall out...:thud:
 

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Discussion Starter #15
I used the key that came with the new pump. I am currently running the stock style(but new) lift pump relocated to the frame rail about 6 inches forward of the tank. I had to buy a new lift pump from them to make the IP warrantable. I just got an email from midwest saying they are sending out another pump. should i upgrade to the airdog pump or is the stock style sufficient with mild mods?
 

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Stock style isn't sufficient with stock power. For what little you have, I'd say a 95gph HPFP or the 95gph FASS would be just fine for ya.
 

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Discussion Starter #17
Well I may be in luck and not have to spend $600 on a fuel system, I found a Jegs 120gph pump I had layin around I never used for my street\strip car. Looks ike an Edelbrock unit so it cant be bad. Its tested at 120gph and preset to 15 psi. You think this thing will work?
 

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Discussion Starter #18
Has anyone had any expirience with the black carter competition pump? That would be a super easy swap(same bracket and fittings etc...)
 

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i would spring for at least a fass 95gph pump only. air dog and fass also make a pump and filter combo thats good. the carter pumps are mostly unreliable and theres a lot of holley dead ones aroulnd the site here also.
spend the money on the fass and live life and drive happy!
 
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