Fuel pump blew up

[Hollandbriscoe]

So I was pulling my boat to the ramp on the first full day of my vacation when my JT just died. I initially thought maybe my batteries had died. After having it towed to the closest dealer they got back to me a couple of days later that the fuel pump had exploded. This was on 8/28 as of today 9/14 I am still without my truck as it took them over two weeks to get all of the parts. In the meantime I have been stuck almost 500 miles from home and I am having to rent a 3/4 ton Chevy to pull my boat around. Hopefully I will have my JT back by Wednesday. I am beginning to wonder if they dealership at home actually did the recall or did they just bill it out?

I have spoken with jeep and they are covering $50 a day for the rental, which still leaves me in the hook for the rest, fortunately I am staying in a family owned condo so I’m not having to pay for a hotel. In the meantime I have lost out on over $3000 worth of work that I either had to cancel or send away because I am out of town.

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[Janster]

Are you saying your dealership replaced the fuel pump (recall) previously? How long ago was that? Do you have any ‘proof’ that they actually did the work (receipt of recall) ? Or perhaps they actually did the work and F’d it up?

Sorry to hear…it sucks even worse when you’re out of town trying to enjoy vacation. Puts a damper on vacation…..

 

[Hollandbriscoe]

Are you saying your dealership replaced the fuel pump (recall) previously? How long ago was that? Do you have any ‘proof’ that they actually did the work (receipt of recall) ? Or perhaps they actually did the work and F’d it up?

Sorry to hear…it sucks even worse when you’re out of town trying to enjoy vacation. Puts a damper on vacation…..

The recall was completed about a year and a half ago. Again I don’t know if it was actually done since the stickers that were supposed to be added never were and I didn’t get the handouts about replacing the fuel filter.

 

[RudeJeepin]

The recall was completed about a year and a half ago. Again I don’t know if it was actually done since the stickers that were supposed to be added never were and I didn’t get the handouts about replacing the fuel filter.

Did they atleast add the sticker under the hood about the recall service?

 

[nanook12]

What kind of lubrication are you using in your fuel?

 

[Hollandbriscoe]

Did they atleast add the sticker under the hood about the recall service?

Not that I noticed.

 

[Vtur]

Ask to inspect the old pump and verify the part number. I scribed my initial on the pump body before brought it in.

 

[Hollandbriscoe]

Ask to inspect the old pump and verify the part number. I scribed my initial on the pump body before brought it in.

I’ve already asked them to check it.

 

[Bacardiac]

What kind of lubrication are you using in your fuel?

Should we be using a fuel lubricant? I haven't used any and got the cp3 recall done. No issues so far.

 

[nanook12]

Well I think the pump failure answers the question about using lubricants. I’ve been running 2cyl motor oil, 1oz to 1gal diesel. The modern diesel fuel has been stripped of most all lubricants. Up north where I live, the Arctic grade diesel is very dry. We have always used some type of lubricant in diesel. The only lubricant for your fuel pump is in your diesel fuel. I generally buy Walmart 2 cycle oil in the gal jug

 

[biodiesel]

Should we be using a fuel lubricant? I haven't used any and got the cp3 recall done. No issues so far.

There's nothing wrong with the CP4 pump. As a matter of fact, there was hotshot/transporter that logged 900,000 miles on his factory engine/CP4 pump when the engine failed. They took apart the original CP4 pump to inspect it. It still looked brand new. The owner/operator had religiously run a fuel additive.

The problem is that American diesel fuel can vary widely between fuel stations. Unfortunately, the CP4 gets a bad reputation, but the pumps are not an issue in Europe where the fuel quality is much stricter in terms of quality standards.

To answer your question, it is best to run a fuel additive if you want to minimize premature wear on the CP4 pump. In terms of lubricity, the best fuel additive is Opti-Lube.

 

[Free2roam]

As far as opti-lube being the best. I was hoping to get a couple more mpg out of a tank. Hadn't happened.

 

[Hollandbriscoe]

Spoke with the service rep today, the pump that blew up appears to be a new one based on the parts number. This means that a part that was put in May of 2024 lasted 15 months. This definitely does not inspire confidence in the recall parts or the motor in general. Fortunately all of this is being covered under warranty, but I am starting to consider if I will be keeping this vehicle long term, as it is my daily and work truck.

 

[rharr]

Spoke with the service rep today, the pump that blew up appears to be a new one based on the parts number. This means that a part that was put in May of 2024 lasted 15 months. This definitely does not inspire confidence in the recall parts or the motor in general. Fortunately all of this is being covered under warranty, but I am starting to consider if I will be keeping this vehicle long term, as it is my daily and work truck.

Those are the choices that need to be made, for reference most modern diesel motors are running the CP4 pump, the one that blew up on you. so don't expect anything different if you move to another brands diesel.

You can also shell out your own money and buy a aftermarket pump that has been modified for improved durability, and possibly a bypass system that doesn't dump trash into the injectors when when it goes pop.

 

[biodiesel]

This definitely does not inspire confidence in the recall parts or the motor in general. Fortunately all of this is being covered under warranty, but I am starting to consider if I will be keeping this vehicle long term, as it is my daily and work truck.

If you aren't going to run a fuel additive, then you are at risk. If you plan to run a fuel additive, then you shouldn't have any problems going forward. Like I've said before, the CP4 pump is a highly reliable and long lasting pump as long as it's getting the lubricity it needs.

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