Additional fuel filter for 2500

[AH64ID]

I have that dog bone for my 18 and it’s great!

 

[Rzrbrn]

I have been buying tools and things from Geno's Garage. It does seem that most places I take my trucks in to service have over filled the oil. Another reason to buy and install the fumoto valve oil pan drain.

 

[Cummins12V98]

The pull the drain plug and barely let the oil out before putting in the plug. Even with draining overnight it only takes 11 qts and 24 oz to put mine on the full mark.

 

[Newsa]

Just changed my fuel filters. They could have gone another 2500 miles, but since my workplace is closed for Coronavirus, we are "working" from home.

As i was trying to prime the fuel filters by bumping and eventually doing some short cranking so i don't overheat the starter and wear it out, i was wondering if the CP4 fuel pump is more vulnerable to self destruction when it is run low on fuel like you almost have to when getting the air out of your system.

 

[lpennock]

As i was trying to prime the fuel filters by bumping and eventually doing some short cranking so i don't overheat the starter and wear it out, i was wondering if the CP4 fuel pump is more vulnerable to self destruction when it is run low on fuel like you almost have to when getting the air out of your system.

Yes but probably not enough to be an issue as you aren't running much rpm when you are priming.

 

[Ozymandias]

Just bump it a couple times, don't crank it as it doesn't help you to prime it.
No HP pump likes it to run dry.

The lift pump primes the whole system, that's all what's needed to prime it.
I think the manual says the same.

 

[HPSimpson]

When i change both fuel filters i turn key on six times to prime, with window open can here the pump. After that starts right up no problem at all.

 

[Learjet]

I have had the problem after every filter change.... even after turning the key several times...having long multiple cranks. Just did my fuel filters last week...I pulled the 30 amp F70 fuse and ran a jumper to the aft contact on F70 (fuel pump) on the drivers side fuse box by the battery. Worked like a champ. Ran the pump for about a minute and truck fired up as normal.

I will do this every time now for fuel filters. IF one was so inclined...a fuse tap on that contact to a momentary switch through a fused wired to the battery pos....you could have a permenant prime switch.

 

[Learjet]

When i change both fuel filters i turn key on six times to prime, with window open can here the pump. After that starts right up no problem at all.

I have not had that work for me...for my 3 last filter changes. see my solution above

 

[Newsa]

I have not had that work for me...for my 3 last filter changes. see my solution above

Hasn't worked for me. I can't hear the lift pump in this truck. I have heard it in the Isuzu i had.

 

[Newsa]

I have had the problem after every filter change.... even after turning the key several times...having long multiple cranks. Just did my fuel filters last week...I pulled the 30 amp F70 fuse and ran a jumper to the aft contact on F70 (fuel pump) on the drivers side fuse box by the battery. Worked like a champ. Ran the pump for about a minute and truck fired up as normal.

I will do this every time now for fuel filters. IF one was so inclined...a fuse tap on that contact to a momentary switch through a fused wired to the battery pos....you could have a permenant prime switch.

That is a good suggestion.

 

[Ozymandias]

It seems that not all MY of Rams have the ability to bump the starter to let the liftpump run for 30 seconds.

 

[Learjet]

It seems that not all MY of Rams have the ability to bump the starter to let the liftpump run for 30 seconds.

Exactly...I have never heard my pump run that long when selected to run

 

[lpennock]

I haven't check on my 18 but on my 06 the fuel pump would only run about 5 seconds unless you bumped the starter. If you bumped the starter it would run ab out 30s. I'm do for filters when I get home so I'll find out next month.

 

[dieselshadow]

How do you "bump the starter" on a tip start vehicle?

Tip start = just bump the key to the start position and the ECM actually controls the starter and engine start process. The starter stays engaged as long as the engine needs to start. The operator has no say in starter engagement.

 

[lpennock]

How do you "bump the starter" on a tip start vehicle?

Tip start = just bump the key to the start position and the ECM actually controls the starter and engine start process. The starter stays engaged as long as the engine needs to start. The operator has no say in starter engagement.

I'm not were I can try on the truck as it is about 1200 miles away. On my 2010 Town and Country it is possible to bump the starter with a quick kick of the TIPStart. Slight longer is required to get the TIP to hold. An I do mean quick, more than 1s and it is going to go into auto start.

 

[Ozymandias]

Maybe @sag2 can provide us some enlightenment in this case.

 

[Wiredawg]

I've only changed fuel filters once on my 2017 Ram 5500 and helped a friend on his 2017 Ram 2500, bu no problem following previously mentioned procedure press run without depressing brake, wait 30 seconds, press off and repeat 6 cycles. Don't worry if you can hear the lift pump running or not, although we heard it running on both trucks.

Easy peasie.

Cheers, Ron

 

[AH64ID]

Without bumping the starter the lift pump will vary it's run time based on ambient temp. IIRC the min it will run is 5 seconds.

With the push button start I did the off-on-wait repeat a couple times, I don't think I did 6 as the FCA procedure says twice. Fired up without issue.

 

[Wiredawg]

Without bumping the starter the lift pump will vary it's run time based on ambient temp. IIRC the min it will run is 5 seconds.

With the push button start I did the off-on-wait repeat a couple times, I don't think I did 6 as the FCA procedure says twice. Fired up without issue.

It funny how that works. I cycled 6 times on my 5500 no problems, but on my friends 2017 Ram 2500, we first tried 2 times and it wouldn't start. I then had him cycle 4 more times, and started right up.

My 2017 Ram C&C FSM doesn't account for the push button start and only lists key priming so here is what they say to do with keyed ignition:

14 - Fuel System / Fuel Delivery, 6.7L Diesel / Standard Procedure
FUEL SYSTEM PRIMING - DIESEL
A certain amount of air becomes trapped in the fuel system when fuel system components on the supply and/or high-pressure side are serviced or replaced. Fuel system priming is accomplished using the electric fuel transfer (lift) pump.

Servicing or replacing fuel system components will not require fuel system priming.

The fuel transfer (lift) pump is self-priming: When the key is first turned on (without cranking engine), the pump operates for approximately 1 to 2 second and then shuts off. The pump will also operate for up to 25 seconds after the starter is quickly engaged, and then disengaged without allowing the engine to start. The pump shuts off immediately if the key is on and the engine stops running.

1. Turn key to CRANK position and quickly release key to ON position before engine starts. This will operate fuel transfer pump for approximately 25 seconds.
   
   
2. Crank engine. If the engine does not start after 25 seconds, turn key to OFF position, and leave it off for at least 5 seconds. Repeat previous step until engine starts.
   
   Fuel system priming is now completed.
3. Attempt to start engine. If engine will not start, proceed to following steps. When engine does start, it may run erratically and be noisy for a few minutes. This is a normal condition.
   CAUTION:
   Do not engage the starter motor for more than 30 seconds at a time. Allow two minutes between cranking intervals.
   
   
4. Perform previous fuel priming procedure steps using fuel transfer pump. Be sure fuel is present at fuel tank.
   
5. Crank the engine for 30 seconds at a time to allow fuel system to prime.

WARNING:
The fuel injection pump supplies extremely high fuel pressure to each individual injector through the high-pressure lines. Fuel under this amount of pressure can penetrate the skin and cause personal injury. Wear safety goggles and adequate protective clothing. Do not loosen fuel fittings while engine is running.
​

WARNING:
Engine may start while cranking starter motor. ​

Cheers, Ron