The 5.0 Cummins uses the same CP4 pump that fails on the GM diesels, and when it goes, it contaminates all eight injectors and the rails. We replace and decontaminate the complete fuel system at your home.
The Titan XD's 5.0 Cummins V8 was Nissan's bid for the heavy-half-ton market, and it inherited the diesel world's most notorious weak point: the Bosch CP4 high-pressure pump. The CP4's roller followers ride their cam on a film of diesel fuel, and when that marginal lubrication breaks down, a roller skews and the pump grinds itself into metal shavings, the same failure that has plagued the GM trucks.
On the Titan XD the aftermath is brutal because of the architecture: a V8 with eight injectors, rails and lines, all downstream of the failing pump and all receiving its debris at injection pressure. The truck typically gives little warning, sudden power loss, maybe a stumble, then a no-start with metal glittering in the fuel filter. By then the contamination is system-wide.
This failure spawned class-action litigation, and Nissan denied the claims, which left owners holding the bill on a truck that was also discontinued. That's the bad news. The good news: the repair, done as a complete system, pump, all eight injectors, rails, lines, tank decontamination, is permanent, and a sorted Titan XD is a genuinely capable truck. The unforgivable repair is the partial one: any fix that reuses contaminated components is a countdown to doing it all again.
If your Nissan is doing any of these, this is the likely cause:
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See how that range compares across Mississauga, Oakville, Milton, Brampton and Etobicoke in the GTA Repair Price Index, honest shop & dealer ranges for the jobs people actually get done.
CP4 Pump Failure. Complete Fuel System Decontamination & Replacement is a big job and shops quote $12,000–$18,000 for it. The single most valuable thing you can do before committing that is have the diagnosis confirmed independently, $100–$250 flat, at your location, no hoist needed, because a diagnosis isn't the repair. Plenty of cars arrive at that quote and turn out to need the smaller version of the problem.
And the honest scoping condition, up front: once I've seen it, I tell you straight whether it's something I can do at your place. If it needs a hoist, a press or a machine shop, I say so and point you to someone who has one. I don't take a job and figure it out in your driveway. That's the whole deal, and it's why the diagnosis comes first.
What the car is doing plus what you've been quoted. Fares reads his texts between jobs.
The jobs I turn down are published, so you can check this one against the list · holding a quote already? Free quote check.
If the truck still runs and you've seen any warning sign, stumble, power loss, debris in a filter, park it now. The CP4 sheds metal continuously once spalling starts, and each engine-hour pushes contamination deeper into components that might still be saveable. Once it's fully failed, the urgency shifts to a different kind: a Titan XD sitting dead loses value fast, while a properly repaired one is a strong truck with the weak point already behind it.
Yes, two days of methodical work on jack stands covers the pump, both banks of injectors, rails, lines and the tank. Nothing about this job needs a hoist; it needs discipline and the right tooling, which we bring. And since the truck can't drive, your driveway is where the repair logically belongs.
The parts list is the biggest in pickup fuel systems, eight injectors, pump, rails, lines, and dealers price it at list plus heavy book hours. There's no honest way to shrink the parts list; what can change is the labour structure and the transparency. We give you one flat price for the complete, itemized job before touching the truck.
Nissan denied the claims, and most owners saw nothing, which is a large part of why these trucks trade cheap and why owners are weighing repair against replacement. It's worth confirming your own truck's history, but the owners calling us are the ones the litigation left behind.
Run the numbers honestly: a dead Titan XD is worth very little, a repaired one with a fully renewed fuel system is a capable, sorted truck, and the gap between those two values is the real measure of this repair. For most owners who like the truck, fixing it properly wins, but we'll give you the straight assessment on your specific truck, not a sales pitch.
Send it over for a free second opinion. I'll tell you straight what the job actually involves, and if their quote is fair, I'll tell you that too.
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