1987 Camaro Fuel Pump Replacement: A Complete Step-by-Step Guide

Replacing the fuel pump on your 1987 Chevrolet Camaro is a job you can do yourself with the right tools and patience. The most common and recommended method is the "trap door" technique, which lets you access the fuel pump from inside the car without dropping the fuel tank. This guide walks you through the entire process, from diagnosing a bad pump to testing your new one.

Signs Your 1987 Camaro Fuel Pump Needs Replacing

Before you start tearing things apart, make sure the fuel pump is actually the problem. A failing fuel pump in a 1987 Camaro shows several clear symptoms:

  • The engine cranks but won't start, or takes much longer to start than normal
  • You lose power when accelerating, especially going uphill or under load
  • The engine sputters, hesitates, or stalls while driving
  • You hear a whining noise coming from the fuel tank area
  • Your fuel economy drops noticeably

If you notice any of these signs, it's time to test the fuel pump. The simplest way is to have a helper turn the key to the ON position while you listen at the fuel filler opening. A working pump will hum for 2-3 seconds. No sound means the pump is likely dead.

What You Need to Know Before Starting

Safety comes first. Fuel is highly flammable. Work in a well-ventilated area, keep fire extinguishers nearby, and disconnect the negative battery cable before you start. The 1987 Camaro originally came with a mechanical fuel pump on some models, but most have an electric in-tank pump. This guide covers the electric pump replacement.

Two main replacement methods exist:

  1. Drop the fuel tank - This is the factory-recommended method but requires removing the rear axle, exhaust, and multiple suspension components.
  2. Cut a trap door - This is much faster and easier. You cut an access panel in the floor behind the rear seat.

Most DIY mechanics prefer the trap door method. It takes about 2-4 hours and saves you from dropping the entire rear suspension.

Tools and Parts You'll Need

Tools:

  • Socket set (metric and standard)
  • Screwdrivers (flathead and Phillips)
  • Fuel line disconnect tool
  • Wire cutters and strippers
  • Hammer and punch
  • Test light or multimeter
  • Fuel pressure gauge
  • Sheet metal and tin snips
  • RTV sealant
  • Safety glasses and gloves
  • Drip pan

Parts:

  • New fuel pump assembly (OEM or high-quality replacement)
  • Fuel filter (replace it while you're in there)
  • Gasket or sealant for the trap door cover
  • Fuel line clamps

Step 1: Prepare the Vehicle

  1. Park on a flat, level surface and set the parking brake.
  2. Disconnect the negative battery cable.
  3. Relieve fuel system pressure. Remove the fuel pump fuse or relay, then crank the engine a few times until it stalls. This releases pressure in the lines.
  4. Open the fuel cap to vent the tank.
  5. Siphon or drain as much fuel from the tank as possible. A near-empty tank is much easier to work with.

Step 2: Access the Fuel Pump Using the Trap Door Method

  1. Remove the rear seat cushion. On the 1987 Camaro, the seat simply pulls up and out.
  2. Pull back the carpet in the rear hatch area. You'll see a flat metal panel behind the rear seats.
  3. Mark the area where you need to cut. The fuel pump sits directly under the center of this panel. Measure carefully - you want to cut a hole roughly 8x10 inches.
  4. Use a drill to start a hole, then cut the panel with tin snips or a jigsaw. Be very careful - the edges will be sharp. Some people use a hammer and chisel, but a saw gives cleaner results.
  5. Keep the cut piece of metal you remove. You'll use it to seal the hole later.

Important: Some mechanics warn against cutting the car frame under the carpet due to safety concerns with fuel lines nearby. Cut only the sheet metal panel, not any structural frame members. The trap door should be in the flat area specifically designed for access.

Step 3: Remove the Old Fuel Pump

  1. Once you have access, you'll see the fuel pump assembly sitting in the top of the tank. It has fuel lines and electrical connectors attached.
  2. Disconnect the electrical harness. There are typically three wires: one for the fuel sender, one hot wire, and one ground wire.
  3. Use a fuel line disconnect tool to separate the fuel lines from the pump assembly. Have a rag ready - some fuel will spill.
  4. Use a screwdriver and hammer to tap the locking ring counterclockwise and remove it. This ring holds the pump assembly in place.
  5. Carefully lift the old pump assembly out of the tank. It may still contain fuel, so tilt it to drain into a drip pan.
  6. Remove and save the rubber O-rings and grommets from the top of the old pump. You may need them for the new pump.

Step 4: Install the New Fuel Pump

  1. Compare the new pump assembly with the old one to make sure they match. If you're installing an aftermarket pump like a Walbro, you may need to trim the gasket or modify the plastic housing slightly.
  2. If the new pump comes as a bare pump (not a complete assembly), transfer the old sending unit, strainer, and electrical components to the new pump. Make sure the float arm isn't bent.
  3. Place the new pump in the plastic housing. Use a fuel-safe epoxy or cement to seal the housing cover if needed.
  4. Connect the fuel lines to the new pump. For stock pumps, use the original plastic flex line. For Walbro pumps, cut about 1/2 inch off the supplied rubber hose and clamp it to the pump outlet.
  5. Plug in the electrical connectors. Make sure all connections are secure.
  6. Carefully lower the new pump assembly into the tank. Make sure the float arm doesn't hit the sides of the tank.
  7. Replace the locking ring. Use a screwdriver and hammer to tap it clockwise until it's tight.
  8. Reconnect the fuel lines to the top of the assembly.

Step 5: Seal the Trap Door

  1. Take the piece of sheet metal you cut out earlier. Cut a new piece slightly larger than the original hole if the edges are damaged.
  2. Apply a generous bead of RTV sealant around the edge of the trap door opening.
  3. Lay the sheet metal over the opening and press it down firmly.
  4. You can secure it with screws or self-tapping metal screws for extra safety, though RTV alone will hold.
  5. Allow the RTV to cure according to the manufacturer's instructions before starting the car.
  6. Replace the carpet and reinstall the rear seat.

Step 6: Reconnect and Test

  1. Reconnect the negative battery cable.
  2. Reinstall the fuel pump fuse or relay.
  3. Turn the key to the ON position (don't start) and listen for the fuel pump to prime. You should hear it hum for 2-3 seconds.
  4. Turn the key OFF and ON a few times to get fuel all the way to the front of the car.
  5. Check for fuel leaks at all connections before starting the engine.
  6. Start the car and let it idle. Check for leaks again.
  7. Take the car for a short test drive to confirm the pump works properly at all speeds.

Testing the Fuel Pump After Installation

To make sure everything is working right, perform these checks:

  1. Listen for the prime - The pump should hum for 2-3 seconds when you turn the key ON.
  2. Check fuel pressure - Connect a fuel pressure gauge to the test port on the fuel rail. Turn the key ON. The pressure should build to specification (typically 12-15 PSI for TBI systems, 40-50 PSI for TPI systems).
  3. Test the electrical circuit - With the key ON, check for power at the fuel pump wires. If the wire is not hot, there may be an issue with the wiring or relay.
  4. Check the fuel pump relay - Remove the relay and short the two largest wires together. This applies power directly to the pump. If the pump runs, the relay is the problem.

Common Mistakes to Avoid

  • Not replacing the fuel filter - Always replace the fuel filter when you replace the pump. A clogged filter can burn out a new pump.
  • Running the tank dry - Never run the fuel tank low after replacing the pump. The fuel lubricates and cools the pump. Running it dry can destroy a new pump quickly.
  • Using the wrong pump - Make sure you get the correct pump for your 1987 Camaro. The 2.8L V6, 5.0L V8, and 5.7L IROC-Z all use different pumps with different pressure ratings.
  • Forgetting to check the wiring - Bad grounds or corroded connectors can cause a new pump to fail prematurely. Clean all connections before installing the new pump.

Why You Should Consider KEMSO Fuel Pumps for Your 1987 Camaro

When it's time to replace your fuel pump, choosing the right brand makes a big difference in reliability and performance. That's where KEMSO Racing comes in. KEMSO specializes in high-performance, OEM replacement fuel pumps that are built to last.

Here's what sets KEMSO apart:

  • Direct OEM replacement - KEMSO pumps are designed to match your 1987 Camaro's factory specifications exactly. No modifications or cutting required. They fit perfectly right out of the box.
  • High-performance flow rates - KEMSO pumps deliver up to 200-340 LPH, which is significantly more than the original 60-80 LPH flow. This means your engine gets all the fuel it needs, even if you've made performance upgrades.
  • Lifetime warranty - Every KEMSO fuel pump comes with a lifetime warranty. If your pump ever fails due to a manufacturing defect, KEMSO replaces it at no cost. This is a rare benefit in the automotive parts industry.
  • USA-based support - KEMSO is based in Houston, Texas, and their customer support team is staffed by USA technicians who know their products inside and out.
  • Compatible with ethanol-blended fuels - KEMSO pumps are designed for gasoline and ethanol blends like E85, so you don't have to worry about fuel compatibility.
  • Affordable pricing - At just $79.98 for most models, KEMSO pumps cost less than half of what you'd pay for dealer parts. Plus, they offer free shipping and easy returns.

KEMSO has built a strong reputation by providing reliable, high-quality fuel pumps for cars, motorcycles, ATVs, UTVs, and personal watercraft. Their pumps are serialized to guarantee quality control, and each one is tested to meet or exceed OEM standards.

Visit KEMSO Racing today to find the right fuel pump for your 1987 Camaro: https://www.kemsoracing.com/

Browse their full catalog, check customer reviews, and order with confidence. With KEMSO's lifetime warranty, you can install your new pump knowing it's backed by one of the best guarantees in the industry.

Final Thoughts

Replacing the fuel pump on your 1987 Camaro isn't as hard as it sounds. The trap door method makes it a manageable weekend project for anyone with basic mechanical skills and the right tools. Just remember to work safely, use quality parts, and test everything before you button it up.

If you're looking for a reliable, high-performance replacement fuel pump that comes with a lifetime warranty, KEMSO Racing is your best bet. Their pumps are direct OEM replacements, built to handle the demands of your 1987 Camaro, and backed by a company that stands behind their products.

For more information and to order your KEMSO fuel pump, visit: https://www.kemsoracing.com/


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