John's 4X4 Center
6367 Arapahoe Rd, Boulder, CO 80303 303.449.2640

Engine and Exhaust

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Fuel Injector Cleaning At John's 4X4 Center In Boulder

Something we hear quite frequently from Boulder residents is that their fuel economy is down and their vehicle just doesn't have the pep it used to. When that happens, one of the things we look f...
Published on: Feb 23, 2025

Fuel System Cleaning At John's 4X4 Center In Boulder

Fuel, whether gasoline or diesel, is delivered to your engine to be burned to generate the power needed to keep you moving.  This fuel leaves a residue as it moves through your fuel system. ...
Published on: Dec 01, 2024

Better Service At John's 4X4 Center For Better Fuel Economy

{{ image('MzA5') }} Boulder drivers who maintain their vehicles make them more efficient. A car or truck that is well-maintained works the way it was designed to, and that means it uses less fuel and...
Published on: Jul 14, 2024

A Clean Fuel System In Boulder

Your fuel system encompasses everything it takes to get fuel from your tank to your engine.  Starting with your fuel pump, which is in the tank, there are the fuel lines, fuel filter, throttle as...
Published on: Mar 14, 2024

Fuel Saving Tip: Fuel System Cleaning at John's 4X4 Center in Boulder

A lot of gas is wasted in dirty fuel delivery systems.  Let’s start at the tank.  The gas tank gathers of dirt, rust and sediment over the years.  That’s why there’s a...
Published on: Nov 18, 2023

Time To Take Another Look at Diesels

{{ image('MzU1') }} If you haven't looked into diesel engines lately, you may be interested in today's post. Why should you care about modern diesel engines? Fuel efficiency, for starters. Because di...
Published on: Oct 12, 2023

How To Save Gas In Boulder

{{ image('MTk4') }}   High gas prices have hit most of our budgets in the Boulder area. If increased fuel costs are consuming a bigger portion of your budget, you may be tempted to skimp in som...
Published on: Jul 27, 2023

Minimizing Blind Spots In Boulder For Safer Driving

When we Boulder travel around CO, each of us must deal with blind spots. We can greatly reduce our blind spots by properly adjusting our vehicle mirrors to give the widest coverage possible. We should...
Published on: Apr 09, 2023