✕
0
✕

Have any questions?

Mon - Fri 7AM - 4:30 PM PST
+1 (530) 668-0818
info@vfidiesel.com
✕
0

injection pump

02/16/2026
VP44 Failure Guide
Published by VFI Diesel on 02/16/2026
Categories

5.9 Cummins VP44 Injection Pump Failure: Complete Diagnosis & Repair Guide

The Bosch VP44 injection pump on the 1998.5–2002 Dodge Ram 5.9L Cummins is notorious for failure — and in most cases, a dead lift pump is the real culprit. Learn the common VP44 failure symptoms, diagnostic codes (P0216, P1688), what actually causes the pump to fail, and how a $300 lift pump replacement can prevent a $1,500+ injection pump failure.
Do you like it?0
0 Read more
01/14/2026
CP4 Injection Pump Failures
Published by VFI Diesel on 01/14/2026
Categories

CP4 Injection Pump Failures: Symptoms, Causes, Repair Costs, Prevention

The Bosch CP4.2 injection pump in 2011+ Duramax engines is one of the most failure-prone components in modern diesel trucks. When it fails, it sends metal shavings through the entire fuel system — turning a $600 pump into an $8,000–$12,000+ catastrophe. Learn the warning signs, what causes failure, prevention options, and whether a CP3 conversion makes sense.
Do you like it?0
0 Read more
11/12/2025
Why Your Diesel Engine Cranks But Won’t Start
Published by VFI Diesel on 11/12/2025
Categories

Why Your Diesel Engine Cranks But Won’t Start — 7 Common Causes (And How to Fix Them Fast)

Your diesel cranks strong but won't fire — now what? The problem is almost always fuel, air, or heat related. From dead lift pumps and air-locked fuel systems to failed glow plugs and worn injectors, here are the 7 most common causes of diesel no-start conditions and how to systematically diagnose each one without throwing parts at it.
Do you like it?1
0 Read more
09/24/2025
VP44 vs Common Rail Injection System
Published by VFI Diesel on 09/24/2025
Categories

Common Rail vs VP44: Which Diesel Injection System Is Better?

The 1998.5–2002 Dodge Ram uses a Bosch VP44 rotary injection pump, while the 2003+ trucks switched to Bosch common rail. Both systems have strengths and weaknesses. This technical comparison covers how each system works, which years got which system, common failure patterns for both, and what repair and maintenance costs look like from technicians who service both daily.
Do you like it?0
0 Read more
12
Common Rail vs VP44: Which Diesel Injection System Is Better?
This website uses cookies to improve your experience. By using this website you agree to our Data Protection Policy.
Read more