What is the spark plug gap on a 1986 Toyota mr2?
The recommended spark plug gap for a 1986 Toyota MR2 is 0.028 to 0.031 inches (0.7 to 0.8 millimeters). This gap setting is crucial for the proper functioning of the vehicle's ignition system and engine performance.
Importance of Spark Plug Gap
The spark plug gap is the distance between the center electrode and the ground electrode of a spark plug. This gap is designed to create a controlled electrical arc that ignites the air-fuel mixture in the engine's cylinders. If the gap is too wide, the spark may not be able to jump across it, leading to misfiring and poor engine performance. Conversely, if the gap is too narrow, the spark may be too weak to effectively ignite the mixture, also resulting in misfiring and reduced engine efficiency.
Recommended Spark Plug Gap for a 1986 Toyota MR2
According to the manufacturer's specifications, the recommended spark plug gap for a 1986 Toyota MR2 is 0.028 to 0.031 inches (0.7 to 0.8 millimeters). This gap setting is designed to ensure optimal ignition timing and combustion, which in turn contributes to the engine's power output, fuel efficiency, and overall performance.
How to Check and Adjust the Spark Plug Gap
- Locate the spark plugs, which are typically accessible from the top of the engine.
- Use a spark plug gap tool, also known as a feeler gauge, to measure the gap between the center and ground electrodes.
- If the gap is not within the recommended range, carefully bend the ground electrode to adjust the gap to the proper specification.
- Repeat the measurement and adjustment process until the gap is within the 0.028 to 0.031 inches (0.7 to 0.8 millimeters) range.
Maintaining the correct spark plug gap is an essential part of routine engine maintenance for a 1986 Toyota MR2. Ensuring the gap is within the manufacturer's specifications can help optimize engine performance, fuel efficiency, and overall vehicle reliability.
What is the torque on the spark plugs on a mk3 MR2?
Tighten it to 25 nm torque. Install the ignition coils to the spark plug wells. Make sure you hear a click indicating that it is locked in place. Don't tighten the plugs with excessive force.
How much is a 1986 MR2 worth?
The price for a 1986 Toyota MR2 varies widely, with prices typically ranging from about $4,150 to over $22,000, depending on condition, mileage, and rarity. A good, average example can be expected to cost around $12,000, while well-maintained, low-mileage examples can command prices closer to $17,000–$22,000, and those needing significant work can sell for under $5,000.
Price factors
- Condition: The most significant factor. A well-maintained, rust-free, and highly original car will be worth much more than a project car that needs extensive repairs.
- Mileage: Lower mileage, especially on the original drivetrain, increases the value significantly.
- Rarity and history: Cars with a detailed maintenance history or desirable original features will fetch higher prices.
- Market: Prices can differ based on your geographic location and the current market demand.
Price ranges
- Low: In the recent past, the lowest auction sale was around $4,150 for a car with significant maintenance needs.
- Average: A good, average-condition car is often valued around $12,000.
- High: For exceptional, low-mileage, or rare examples, prices can reach $22,000 or more at auction.
What is the recommended spark plug Gap?
Close and Wide Spark Plug Gaps: Pros and Cons
Naturally aspirated combinations tend to perform better with a hotter plug that's gapped from 0.030 to 0.035-inch. Conversely, forced-induction and nitrous-assisted mills are happier with cold spark plugs gapped at 0.020 to 0.025-inch.
What is the spark plug Gap on a 2.5 L?
0.049–0.053 in
Engine Specifications - 2.5L
| Specifications | |
|---|---|
| Cubic inches. | 152 |
| Compression ratio. | 9.7:1 |
| Spark plug gap. | 0.049–0.053 in (1.25–1.35 mm) |
| Required fuel. | Minimum 87 octane |
