Bleeding the Brakes on Your 2007 Honda VFR800FI Interceptor ABS
Shop parts for a 2007 Honda VFR800FI - Interceptor ABS Motorcycle.
What You Are Working With on This VFR
The 2007 Honda VFR800FI Interceptor ABS uses hydraulic disc brakes at both ends, and the ABS badge on the bodywork tells you there is an anti-lock modulator plumbed into the system between the master cylinders and the calipers. That matters for this job in two ways. First, a routine fluid flush and air bleed done at the caliper bleeders is a normal garage task on this bike. Second, if air has been allowed into the ABS unit itself — because a reservoir ran dry, a line was disconnected, or the modulator was removed — the standard lever-and-bleeder routine will not necessarily purge it, and the bike needs to go to a dealer or a shop with the appropriate diagnostic equipment.
This article covers refreshing the fluid and removing air from both the front and rear hydraulic circuits. It does not cover pad or rotor replacement, and it does not cover the clutch, which is a separate hydraulic circuit on this model and should be bled on its own.
When a Bleed Is Due
Brake fluid is hygroscopic, meaning it pulls moisture out of the air over time. Moisture lowers the fluid's boiling point, and a boiling fluid creates vapor in the lines — which feels exactly like air in the lines and shows up as a lever that goes soft or long under hard, repeated braking. That is why many riders refresh the fluid on a regular interval even when nothing feels wrong.
Bleed the brakes sooner if you notice any of the following:
- A spongy or mushy lever or pedal, or a lever that now comes noticeably closer to the grip than it used to.
- Fluid in the reservoir that looks dark, cloudy, or contaminated with debris.
- A lever that feels firm after several quick pumps but fades again once you hold it.
- Any recent work that opened the hydraulic system — new lines, caliper service, master cylinder repair, or a reservoir that ran dry.
Tools and Supplies to Have Ready
Gather everything before you crack a bleeder open, because once the system is open you want to work without interruption.
- Fresh brake fluid of the type marked on the master cylinder reservoir cap, from a sealed container. Do not substitute a different fluid type and do not use a container that has been open and sitting on a shelf.
- A box-end wrench that fits the bleeder valve snugly. A box-end grips the hex far better than an open-end and is much less likely to round the bleeder.
- A length of clear tubing that fits tightly over the bleeder nipple, plus a catch bottle to route the old fluid into.
- A syringe or turkey baster for pulling the old fluid out of the reservoir.
- The correct driver for the reservoir cap screws, plus rags or shop towels.
- Optional but helpful for solo work: a one-way check-valve bleeder or a vacuum bleeder, either of which reduces the pump-and-hold coordination the job otherwise requires.
Setting Up Before You Open Anything
Put the bike on a stand so it is stable and upright. On the front circuit, turn the handlebars until the reservoir on the master cylinder sits level — a tilted reservoir will spill fluid the moment the cap comes off. Lay rags over the tank, the upper fairing, the instrument cluster, and anything else below the reservoir, because brake fluid attacks paint and clear plastics on contact. If a drop does land on a painted or plastic surface, wipe it up immediately and rinse the area with water rather than waiting until you finish.
The Bleeding Procedure, Step by Step
Work through one circuit at a time. If your bike has two front calipers, bleed each one in turn rather than trying to do both at once. As a general practice, start with the caliper farthest from the master cylinder and finish with the closest one.
- Wipe the reservoir cap and the area around it clean so grit cannot fall in, then remove the cap and the diaphragm.
- Use the syringe or baster to draw most of the old fluid out of the reservoir. Leave enough at the bottom that you are not pulling air into the master cylinder port.
- Top the reservoir up with fresh fluid from the sealed container.
- Push the clear tubing onto the bleeder valve and route the other end into the catch bottle, with the bottle positioned so the tube end stays submerged.
- Squeeze the lever (or press the pedal) and hold it steady. Do not release it yet.
- Open the bleeder about a quarter turn. Fluid and any trapped air will push out through the tube.
- Close the bleeder before you release the lever or pedal. Releasing with the bleeder open draws air straight back into the caliper, which is the single most common way this job goes wrong.
- Release the lever, then repeat the squeeze-hold-open-close-release cycle. Watch the tube: you are looking for a steady stream with no bubbles, and a color that matches the fresh fluid going in.
- Check the reservoir every few cycles and top it off. Never let it drop low enough to draw air into the master cylinder, or you will be starting over.
- When clean, bubble-free fluid is coming through, close the bleeder snugly — firm enough to seal, not so tight that you damage the seat or the caliper threads.
- Repeat the whole process on the rear circuit if you are flushing both ends.
Finishing the Job Correctly
With both circuits bled, fill each reservoir to the level marking on the body, not above it. Reinstall the diaphragm and cap and wipe down any residue. Then inspect the bleeder valves and the banjo fittings at the master cylinder and caliper for weeping or dampness, and check the reservoir seam and cap for leaks. A dry paper towel wiped around each joint will show a leak quickly.
Testing Before You Ride
With the bike still supported, squeeze the front lever and press the rear pedal. Both should feel firm and consistent, and neither should slowly sink toward the end of its travel while you hold steady pressure. Spin each wheel by hand to confirm the brakes are not dragging. Then, in a safe open area at low speed, apply each brake individually and confirm it engages smoothly and releases cleanly before you ride normally.
When to Stop and Take It to a Shop
If the lever will not firm up after several full bleeding cycles, if it only firms up when you pump it, or if bubbles keep appearing no matter how long you bleed, stop and have the bike inspected. The same applies to fluid weeping from the master cylinder or a caliper, and to any situation where the reservoir ran dry or the ABS modulator or its lines were disturbed — air trapped in the ABS unit on this Interceptor generally requires dealer-level equipment to purge properly. Recognizing that boundary is part of doing this job well.
Related Shopping Categories
Shop Brake Fluid for a 2007 Honda VFR800FI - Interceptor ABS Motorcycle.
Shop Brake Lines for a 2007 Honda VFR800FI - Interceptor ABS Motorcycle.
Shop Brake Pads for a 2007 Honda VFR800FI - Interceptor ABS Motorcycle.
Shop Stands for a 2007 Honda VFR800FI - Interceptor ABS Motorcycle.
Shop Brake Tools for a 2007 Honda VFR800FI - Interceptor ABS 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.
