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  3. HONDA 18625-MN0-680

HONDA 18625-MN0-680 Ac Air Suction Valve

fits model: Vf700c. make: Honda. year: 1987-88.

18625-mn0-680 Honda Oem Motorcycle 1987-88 Vf700c A Ac Air Suction Valve Stay

( Manufacturer Part Number: 18625-MN0-680 ), ( Part Type: Ac Valve Suction ), ( Country Of Origin: Japan )

Review HONDA Oem Motorcycle 1987 Ac Air Suction Valve Stay fits VF700C 1987-88

The **Honda 18625-MN0-680 Air Suction Valve** is a precision-engineered component designed specifically for the **1987 1988 Honda VF700C F4**, a classic sport-touring motorcycle renowned for its balance of performance, comfort, and reliability. This valve is a critical part of the **air induction system**, playing a pivotal role in regulating airflow into the engine s carburetors, which directly impacts throttle response, fuel efficiency, and overall engine performance. Crafted from high-quality materials, the valve is built to withstand the demands of high-speed operation while maintaining durability under varying thermal and mechanical stresses. Its unique design ensures smooth, consistent airflow, minimizing turbulence and maximizing combustion efficiency a key factor in preserving the VF700C s legendary smoothness and power delivery. Whether restoring a vintage bike to its original glory or upgrading an existing system for enhanced performance, this valve is an essential replacement part that adheres to Honda s stringent engineering standards. Its compatibility with the VF700C s carbureted setup makes it a straightforward yet vital component for maintaining optimal engine function, ensuring that riders experience the same refined power and refined ride that defined this iconic motorcycle during its era. For enthusiasts seeking authenticity or those looking to fine-tune their bike s performance, this valve serves as a reliable, high-performance solution.

### **Pros and Cons of Buying a 1987-1988 Honda VF700C (18625-MN0-680) with Air Suction Valve Issues**

#### **Pros**

1. **Classic Design and Reliability**

The VF700C is a well-regarded classic motorcycle known for its timeless design, smooth power delivery, and overall durability. Honda s reputation for build quality means many of these bikes last for decades with proper maintenance.

2. **Strong Engine and Performance**

The 688cc parallel-twin engine is a fan favorite, offering a balanced mix of low-end torque and mid-range power. It s capable of handling highway speeds comfortably while remaining manageable in city traffic. The engine is also known for its longevity if maintained correctly.

3. **Comfortable Ergonomics**

The VF700C features a relaxed riding position, making it suitable for both short rides and long journeys. The seat is relatively comfortable for its era, and the overall geometry is forgiving for riders of average height.

4. **Good Fuel Economy for Its Class**

Compared to modern sportbikes, the VF700C offers decent fuel efficiency, averaging around 40-50 mpg (depending on riding style). This makes it a practical choice for daily commuting or weekend rides.

5. **Aftermarket Support and Customization**

The VF700C has a strong aftermarket following, with parts readily available for upgrades (e.g., exhausts, carburetors, suspension, and electronics). This makes it easier to modify or restore to personal preference.

6. **Lower Running Costs (Compared to Modern Bikes)**

Parts, labor, and fuel are generally cheaper than for newer high-performance bikes. Insurance and registration costs are also lower than for modern sportbikes.

7. **Nostalgia and Community Appeal**

For enthusiasts who appreciate classic motorcycles, the VF700C holds a special place in the community. Owning one can be a rewarding experience for riders who enjoy the history and craftsmanship of the era.

---

#### **Cons**

1. **Air Suction Valve Issues (Your Specific Concern)**

The air suction valve (also called the "air bleed" or "air injection valve") in the carburetors is a known weak point on the VF700C, especially in the 1987-1988 models. When it fails, it can cause:

- Rough idle or stalling.

- Poor throttle response.

- Increased fuel consumption.

- Difficulty starting the bike.

Replacing the valve is relatively inexpensive (parts cost around $10-$20 each), but if multiple valves fail or the carburetors are already worn, a full carburetor rebuild may be necessary (costing $100-$200).

2. **Carburetor Maintenance Requirements**

The CV carburetors (or later CVX in some models) are prone to clogging or leaking over time. They require periodic cleaning, adjustment, or replacement of jets and seals. Neglecting this can lead to drivability issues.

3. **Outdated Technology**

The bike lacks modern features like:

- Electronic fuel injection (EFI).

- ABS (anti-lock braking).

- Traction control.

- Digital instrumentation (early models have analog gauges).

- Modern suspension tuning (shock absorbers and forks are basic by today s standards).

4. **Rust and Wear on Older Examples**

Many 1987-1988 VF700Cs have seen significant mileage, and rust (especially in the swingarm, frame, and exhaust) is common in regions with harsh winters. A thorough inspection of the frame, suspension, and drivetrain is essential before purchasing.

5. **Limited Modern Safety Features**

The braking system (single disc at the front, drum at the rear) is less effective than modern dual-disc setups. Tires are also narrower and less grippy than contemporary options, which can affect handling in wet conditions.

6. **Higher Maintenance Needs**

Unlike modern bikes with sealed components, the VF700C requires regular attention to:

- Chain and sprocket maintenance.

- Valve adjustments (every 10,000 miles).

- Belt or chain drive (if applicable) tensioning.

- Periodic oil and filter changes (synthetic oil is recommended for longevity).

7. **Resale Value**

While not a dealbreaker, the VF700C does not hold its value well compared to newer or more rare classics. If you plan to sell it later, you may not recoup a significant portion of the purchase price.

8. **Noise and Vibration**

The engine and exhaust are louder than modern bikes, which may not be ideal for urban riding. Vibration levels can also be higher, especially at certain RPM ranges, leading to rider fatigue on long rides.

---

### **Ending Conclusion**

The 1987-1988 Honda VF700C is a fantastic motorcycle for riders who appreciate classic design, reliability, and a balance of power and comfort. However, it comes with notable drawbacks, particularly regarding carburetor maintenance and the air suction valve issue you ve identified. If you re mechanically inclined or willing to invest time in upkeep, this bike can be an excellent choice. For someone seeking a plug-and-play experience with modern conveniences, a newer bike might be more suitable.

**Recommendation:** - **Buy it if:**

- You re comfortable with carburetor maintenance and are prepared to address the air suction valve issue immediately.

- You value the bike s classic appeal, reliability, and aftermarket support.

- You plan to use it for casual riding, commuting, or weekend cruising rather than high-performance track use.

- You find a well-maintained example with a clean title and minimal rust.

- **Avoid it if:**

- You want a bike with modern features like EFI, ABS, or advanced suspension.

- You re not willing to invest time in carburetor tuning or are uncomfortable with basic mechanical work.

- The air suction valve issue is severe, and the seller refuses to replace it or provide proof of recent carburetor service.

- You prioritize resale value or plan to keep the bike for an extended period without maintenance.

**Final Tip:**

Before purchasing, have a trusted mechanic inspect the bike thoroughly, especially the carburetors, exhaust, frame, and suspension. If the air suction valve is confirmed to be faulty, budget for its replacement or a full carburetor rebuild. With proper care, the VF700C can be a rewarding and enjoyable ride for years to come.

Details:

part #: 18625mn0680 price

  • $14.59

specifications intakefuelmotorcycle:

  • for models: Vf700c
  • for makes: Honda
  • for years: 1987-88
  • mpn: 18625-mn0-680
  • part type: Ac Valve Suction
  • country of origin: Japan

shipping intakefuelmotorcycle:

  • cost: $10.60
  • carrier: USPS
  • service: USPS Ground Advantage, USPS Priority Mail, USPS Priority Mail Express
  • transit: 3-8 Days
  • class: Standard, Expedited
  • type: Calculated

seller intakefuelmotorcycle:

  • city: Hinckley, Minnesota
  • # reviews: 15259
  • rating: 99.9%

general intakefuelmotorcycle:

  • condition: New other see details
  • Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery

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offer intakefuelmotorcycle:

  • quantity: 1
  • availability: In Stock
  • started: May 4, 2026
  • sold: 0
  • options: Ship-to-home
for models: vf700c, for makes: honda, for years: 1987-88, part type: ac valve suction, country of origin: japan,
category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery, sku: 23715475830488751,
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  • New other (see details). Offer #1 priced at $14.59 + $10.60 shipping estimate = $25.19* total. NOS HONDA MOTORCYCLE AIR SUCTION VALVE. 87-88 VF700C A, AC.+$10.60 shipping

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