Printer pulls two or more sheets at once
Paper can stick together, the tray can be too full, or the guides can be holding the stack incorrectly. Try a small clean stack before assuming the printer needs repair.
Use one kind of paper
Do not mix Letter and A4, plain and photo paper, or noticeably different weights in the same tray for this test.
Separate the sheets
If the pages feel stuck together, loosen the stack gently and line the edges up again.
Use less paper
Make sure the tray is not overfilled. A smaller stack is useful for testing even when the tray does not look full.
Set the guides
Move the paper guides so they lightly touch the stack. They should not bend the paper or leave a wide gap.
Try several pages
If the printer now feeds one sheet at a time, the stack or tray setup was the cause. If it still grabs multiple sheets, the separation or pickup parts may need model-specific cleaning or service.
Manufacturer references
Printer Triage is an independent troubleshooting reference. Exact tray limits and cleaning procedures vary by model.