1. Identify the Problem:
* Is the door completely stuck, or can you slightly move it? A slightly movable door suggests a minor obstruction, while a completely stuck door might indicate a more serious issue.
* When did the jamming start? Did it happen after an accident, rain, or other significant event? This gives clues to the cause.
* What sounds or feels do you get when trying to open the door? Grinding, binding, or no movement at all all provide diagnostic information.
2. Common Causes and Fixes:
* Worn or Damaged Door Latch Mechanism: This is a very common problem in older cars.
* Check the latch: Carefully inspect the latch mechanism itself. Look for broken parts, bent components, or anything out of alignment. You might need to lubricate moving parts with a penetrating oil like WD-40 (use sparingly and wipe off excess). A replacement latch mechanism might be necessary.
* Check the striker plate: The striker plate (the metal plate on the doorjamb that the latch engages with) might be bent or loose. Try gently adjusting its position.
* Door Regulator Problems (Power Windows): If your Electra has power windows, a malfunctioning regulator can jam the door.
* Check the window: Is the window fully up? Sometimes, a slightly lowered window can interfere with the door's movement. Try raising it completely. If the window mechanism is the problem, you'll likely need repairs or replacement.
* Stuck or Frozen Door Seals: Weather stripping can swell and freeze in cold weather.
* Check and lubricate the seals: Use a silicone-based lubricant to lubricate the weather stripping around the door. This can help it move more freely. If the seals are severely damaged, they may need replacing.
* Debris in the Door Jamb: Dirt, leaves, or other debris can prevent the door from closing or opening properly.
* Clean the door jamb: Use a brush, compressed air, or a vacuum cleaner to thoroughly clean the door jamb. Pay attention to the area around the latch mechanism.
* Bent or Damaged Door: A severely bent door frame or a damaged hinge can cause jamming.
* Visual inspection: Carefully examine the door and its hinges for any visible damage. This often requires professional repair or replacement.
3. Advanced Troubleshooting:
* Interior Door Handle: Try opening the door from the inside. If this works, the problem is likely with the exterior handle or the connecting linkage.
* Exterior Door Handle: If you can't open from the outside but can from the inside, the exterior handle mechanism or linkage is probably faulty.
* Remove the Interior Door Panel: Carefully remove the interior door panel (there are many online guides for this, specific to the 1968 Buick Electra 225). This gives access to the door's inner workings, allowing a thorough inspection of the latch and other components.
Important Notes:
* Safety First: Be careful when working on your car. Use appropriate tools and safety glasses.
* Consult a Repair Manual: A repair manual specific to your 1968 Buick Electra 225 will provide detailed diagrams and instructions.
* Professional Help: If you're not comfortable working on your car yourself, or if the problem persists after trying these steps, take your car to a qualified mechanic.
Remember to systematically work through these steps, carefully examining each component. Often, a simple lubrication or minor adjustment will solve the problem. But if the issue is more complex, professional assistance is recommended.
