Finding your distributor gear chewed up is a frustrating experience for any car enthusiast. This critical component in older vehicles (mostly those with points ignition systems) transfers rotational motion from the engine to the distributor, which in turn fires the spark plugs. Damage here means your engine won't run, and the repair requires careful attention. This guide will detail what to replace when your distributor gear is damaged, how to identify the problem, and steps to prevent future issues.
What Parts Need Replacing When the Distributor Gear is Chewed Up?
The most immediate replacement is the distributor gear itself. This is the primary culprit showing the damage. However, the damage to the distributor gear often points to a larger problem: wear or damage on the camshaft gear. This is the gear that meshes directly with the distributor gear. If the camshaft gear is worn, replacing only the distributor gear will lead to rapid re-damage.
Therefore, you'll likely need to replace both the distributor gear and the camshaft gear as a set. Ignoring the camshaft gear is an expensive mistake. Inspecting both components for wear is crucial before making any purchases.
In some cases, significant damage might necessitate a distributor shaft replacement. This is less common but should be considered if the shaft itself shows significant wear or damage alongside the gear.
How Do I Know if My Camshaft Gear is Bad Too?
Visual inspection is key. Once you've removed the distributor, carefully examine the camshaft gear. Look for:
- Worn teeth: Similar to the distributor gear, the teeth on the camshaft gear should be clean, sharp, and uniformly sized. If they're rounded, chipped, or uneven, it's time for a replacement.
- Excessive wear: Even if the teeth aren't chipped, excessive wear can be indicated by a noticeable difference in the height or width of the teeth compared to a new gear.
- Scoring: Look for any grooves or scratches on the gear surface, indicating friction and wear.
If you're unsure, comparing it to a picture of a new camshaft gear can help.
What Causes Distributor Gear to Chew Up?
Several factors contribute to premature wear and damage to distributor gears:
- Insufficient lubrication: Lack of proper lubrication is a significant culprit. Ensure the engine's lubrication system is functioning correctly, and consider using a high-quality engine oil.
- Incorrect gear mesh: Poor alignment between the distributor and camshaft gears can lead to uneven wear and rapid damage.
- Worn or damaged camshaft gear: As mentioned earlier, a worn camshaft gear will directly lead to the chewing up of the distributor gear.
- Using the wrong gear: Installing a distributor gear with incorrect specifications for your engine can cause rapid failure.
- Metal shavings: Metal debris in the oil can abrade the gears over time.
Can I Just Replace the Distributor Gear Without Replacing the Camshaft Gear?
While it's possible to replace just the distributor gear, it's strongly discouraged. The underlying cause of the damage likely involves the camshaft gear as well. Replacing only the distributor gear is a temporary fix that will likely result in the new gear being damaged shortly thereafter, leading to repeated repairs and wasted money.
How Much Does it Cost to Replace a Distributor Gear and Camshaft Gear?
The cost will vary depending on the vehicle, the specific parts needed, and labor charges. The parts themselves are relatively inexpensive, but labor costs can add up, particularly if the distributor is difficult to access. It is best to obtain quotes from your mechanic before proceeding with the repair.
This guide should equip you with the information needed to address a chewed-up distributor gear. Remember – prevention is key! Regular maintenance, including oil changes and lubrication checks, can significantly prolong the life of your distributor and camshaft gears. Always address both parts to ensure a lasting and functional repair.
