Six injectors, Huei pump and labor $ estimate?

I had a Huei pump fail about eight years ago. I had extended warranty at the time and the pump and labor was $3400. It cost me fifty dollar deductible.

No injectors needed changing out.

I had just refueled at Flying J and started driving out and it just died.

What was the outcome?

ScottG wrote:
Sounds like someone is shot-gunning parts because that's what mechanics do that cant trouble shoot a problem, they replace everything. Sorry but that's a bad sign to me.
You might want to get a second opinion.

Well,
In some cases yes, that can happen. But, in the case of a C-7, be it a 300, 330 or, 350HP version, the HUEI pump has tad bit of reputation for turning in early and, in many cases, it takes some or, quite possible, all the injectors with it. And, the estimate you see above is pretty close to right on, depending on the particular repair establishment and a couple other variables. The C-7 is good engine but, based on a few that have had this issue, they can get a bad wrap.

I'm no expert on logistics of this engine but, based on the amount of C-7 units produced, in not only motor homes but, over the road trucks, dump trucks, loaders, graders, Fire trucks, and more, the actual amount of break downs, in conjunction with the HEUI pump, is seriously small, based on all the info I could ever find.

But, like the OP, it can happen. That is one reason why so many owners of the C-7 really push maintenance, in terms of timely oil changes. The HEUI pump utilizes engine oil, to boost hydraulic pressure of each of the injectors for higher injection pressure. CLEAN oil IS A MUST!
Scott

rgatijnet1 wrote:
It is almost impossible for ALL injectors to go bad at the same time.

Not when the pump $hits the bed.

Had this happen in 2007. Covered under warranty, fortunately. What happens is some early model c7 heui pumps are bad, have a bad shaft,bearing. This pump pressurizes engine oil up to 4000 psi, which is then used to actuate the injectors at up to 28000 psi. When the heui pump goes bad it sends metal shavings down the passages in the head into the injectors. Repair is new pump, clean everything up, new injectors. Make damn sure you are using proper oil and oil, fuel filters are completely clean after repair.

It was 6k at the time if I recall. There's an updated pump and an after market solution but I don't remember the name.

Sorry

Cbig

duplicate post

Don't everyone be so quick to jump on the repair facility. That repair is not uncommon for the C series Cat's Many on RV forums have had the same problem. I have read of repairs costing more than $6000. Although clean oil is very important the HEUI pump is a weak point in that injection system.

Moisheh

It is almost impossible for ALL injectors to go bad at the same time.

That's what happens when you let laborers work on your vehicle.

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