Close

Difficult Cold Start

Problems

Several things could be causing difficult cold starts for your 5.9L Cummins:

Problem: Poor fuel quality If you suspect poor fuel quality, treat with Diesel Extreme. In winter, treat with a half-dose of Diesel Extreme and a full dose of Diesel Winter Anti-Gel.

Problem: Grid heater problem

Details

A problem with the grid heater could be something as simple as corroded battery cables, making the heater not work at full capacity, or it could be a complete failure of the grid heater. If you have any questions, feel free to contact one of our diesel experts.

The contents of HotShotsSecret.com, such as text, graphics, images, and other material contained on the Diagnose Your Diesel section are for informational purposes only. Always seek the advice of your mechanic or other qualified professional with any questions you may have regarding your vehicle’s condition.

TALK TO AN EXPERT

800-341-6516