Bleeding the Brakes on a 2007 Honda VFR800FI Interceptor

Shop parts for a 2007 Honda VFR800FI - Interceptor Motorcycle.

The 2007 Honda VFR800FI Interceptor uses hydraulic disc brakes at both ends, so the front lever and rear pedal both depend on clean fluid and a sealed system. Honda also built ABS-equipped versions of this generation, so check your bike for an ABS badge or ABS unit before you start. The caliper bleed described here is the normal service for refreshing fluid and removing air from the calipers and lines. If your bike has ABS or a combined braking system and air has entered the ABS unit or the system has additional bleed points, that portion is best handled by a shop.

When a Bleed Is Due — and Why It Matters

Brake fluid absorbs moisture from the air over time. That moisture lowers the fluid’s boiling point, and under hard or repeated braking it can turn to vapor in the lines. Vapor compresses, so the lever or pedal starts to feel soft, long, or spongy. A lever that pulls closer to the grip than it used to, a pedal with extra travel, dark or cloudy fluid in the reservoir, or a brake that fades under hard use are all signs to bleed the system. You should also bleed after any work that opened the hydraulic circuit, such as replacing a line, servicing a caliper, or repairing the master cylinder. Many riders refresh the fluid on a regular schedule even when the brakes still feel normal, because clean fluid is cheap insurance against a soft lever on a hot day.

Tools and Supplies to Have Ready

  • Fresh brake fluid of the type marked on the master cylinder reservoir cap, from a sealed container
  • A box-end wrench that fits the bleeder valve
  • A length of clear tubing that fits snugly over the bleeder
  • A clean catch bottle for the old fluid
  • Rags or shop towels, plus water for rinsing spills
  • A syringe or turkey baster for removing old fluid from the reservoir
  • A screwdriver or driver that fits the reservoir cap screws

A one-way check-valve bleeder or a vacuum bleeder can make the job easier when you are working alone, but the manual lever-and-bleeder method works fine with a little patience. Keep the fluid container capped when you are not pouring, and do not reuse fluid that has been sitting open.

Preparation and Protection

Put the bike on a secure stand so it is upright and stable. Turn the handlebars until the front reservoir sits level; if the reservoir is tilted, you cannot judge the fluid level correctly and it is easier to spill. Cover the painted bodywork, the instrument area, and any plastic near the reservoir with rags. Most brake fluid damages paint and plastic on contact, so wipe up any spill immediately and rinse the area with water. Work in a well-ventilated space, and keep the reservoir cap and diaphragm clean so grit does not fall into the fluid.

Bleeding the Front Brake

  1. Remove the reservoir cap and diaphragm. Use the syringe or baster to pull most of the old fluid out of the reservoir, but leave enough to cover the bottom so you do not push air into the master cylinder.
  2. Fill the reservoir with fresh fluid of the type marked on the cap. Keep the container sealed when you are not pouring.
  3. Fit the clear tubing over the front caliper bleeder and route the other end into the catch bottle with a little fluid in the bottom. The tube should fit snugly so air cannot sneak in around the bleeder.
  4. If your bike has more than one front caliper, bleed them one at a time. A common approach is to start with the caliper farthest from the master cylinder, then move to the other.
  5. Squeeze the front lever slowly and hold it. While you hold it, open the bleeder about a quarter turn with the box-end wrench. You should see fluid and possibly air bubbles move through the tube.
  6. Close the bleeder before you release the lever. If you release the lever with the bleeder open, air can be drawn back into the caliper.
  7. Repeat the squeeze-hold-open-close-release cycle. Check the reservoir after every few cycles and top it off before it gets low. Never let the reservoir run dry, or you will pull air into the master cylinder and make the job longer.
  8. Continue until the fluid coming through the tube is clean and free of bubbles, and the lever feels firm. Then tighten the bleeder snugly without overtightening it. Move to the other front caliper if your bike has one, using the same method.

Bleeding the Rear Brake

  1. Check the rear reservoir or the shared reservoir, depending on how your VFR800FI is arranged, and keep it topped with fresh fluid. The rear brake is hydraulic on this model, so it is bled rather than adjusted like a drum brake.
  2. Attach the clear tubing to the rear caliper bleeder and route it into the catch bottle.
  3. Press and hold the rear pedal. Open the bleeder about a quarter turn, let fluid and air out, then close the bleeder before you release the pedal.
  4. Repeat until the fluid is clean and bubble-free and the pedal feels firm and consistent. Watch the reservoir level throughout and top it off as needed.
  5. Tighten the rear bleeder snugly without overtightening. Wipe up any fluid that dripped on the caliper or wheel.

Finishing, Testing, and Troubleshooting

When both circuits are bled, fill the reservoir to the correct level marking, reinstall the diaphragm and cap, and clean any spilled fluid from the bike. Check the bleeder valves and the banjo fittings at the master cylinder and calipers for leaks. Pump the lever and pedal a few times, then hold steady pressure on each; they should feel firm and should not slowly sink. Spin each wheel to confirm the brakes are not dragging. Before riding normally, test the brakes at low speed in a safe area.

If the lever or pedal will not firm up after several bleeding attempts, if it firms only after pumping, if bubbles keep appearing, or if you see fluid leaking from the master cylinder or a caliper, stop and diagnose the problem. Air trapped in an ABS unit or a combined brake system can require a shop-level procedure, and guessing at the sequence is not worth the risk. A brake system that will not hold pressure should not be ridden until it is fixed.

Related Shopping Categories

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Shop Brake Tools for a 2007 Honda VFR800FI - Interceptor Motorcycle.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.