These are rather tricky jobs for any mechanic, due to the location of the pump and the detailed steps involved in safely accessing and replacing it. This pump is located inside the fuel tank in most vehicles, which must be partially or fully removed. Most replacements take between 2 to 4 hours depending on the make and model. Labor costs vary anywhere from $75 to $150 per hour, depending on the mechanic, so labor can be upwards of $600 for a complex replacement. This does not include the cost of the pump itself, which can be from $50 in basic models to $300 or more for OEM and high-performance options.
The major complication in fuel pump replacement is that it requires the relief of pressure of the system safely, seeing as fuel-injected systems run between 30 and 60 psi. If that is not depressurized, the possibility of fuel spray is highly risky. Mechanics also normally use appropriate fuel line disconnect tools and safety equipment for handling these risks, not forgetting proper ventilation to avoid the risks of flammable fumes. For the average do-it-yourselfer, this requires great attention to detail and safety gear since high-pressure fuel means complications with performing the task.
Corrosion or rust around the fuel tank area can further complicate this process, especially in high-mileage vehicles or in those that have been exposed to harsh weather. This could add an hour or more to the job for corroded fuel lines or bolts that take a lot of time to remove or replace. Mechanics often suggest replacing associated parts, such as fuel filters, in conjunction with replacing the pump. This adds a little extra to the cost but aids the efficiency and longevity of the new pump by preventing blockage.
Replacing the fuel pump also differs according to vehicle design. For example, some SUVs and trucks have removable panels that provide easy access to the fuel pump, thus limiting the need to drop the tank. But on most sedans and compact cars, the tank still needs to be removed, thereby adding complexity and increasing labor time.
Most automotive experts recommend taking this replacement to a professional mechanic, as it can be a complex and even hazardous procedure. Indeed, according to Chris Fix, an ASE-certified technician: “Improper installation can result in leaks, low erratic fuel pressure, or complete pump failure.” That shows just how critical proper installation is. Are you looking for options regarding reliable fuel pump maintenance or any further advice? Visit Fuel Pump.