Sewing Machine Skipping Stitches? 7 Causes and Fixes (2026)

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Skipped stitches are the ones that simply are not there: the machine sews along, and every few stitches a loop fails to form, leaving gaps in the seam. On stretchy fabric a skipped stitch is a weak seam waiting to split; on any fabric it looks unprofessional and unravels under stress. The good news is that skipped stitches have a short list of causes, and repair techs note that the fix is usually a fresh needle or a threading correction, not a broken machine.

A stitch forms when the needle carries the upper thread down through the fabric and the machine’s hook catches the resulting thread loop at exactly the right instant. Anything that disturbs that meeting, a bent needle, the wrong needle type, bad threading, or lint, produces skips. This guide covers the 7 causes in likelihood order.

TL;DR: Skipped stitches are most often fixed by installing a fresh needle of the correct type and size for your fabric (ballpoint or stretch needles for knits), rethreading the upper path with the presser foot UP, and cleaning lint from the bobbin area. Skips on knit or stretch fabric almost always mean you need a ballpoint or stretch needle. Skips on all fabrics with a new needle and correct threading can indicate a timing problem, which needs professional service.

The 7 Causes of Skipped Stitches

Work through these in order. Stop when the skips stop.

1. Bent, dull, or damaged needle

The number one cause. A needle that is even slightly bent cannot present the thread loop to the hook at the right position, so the hook misses and the stitch never forms. Dull needles push fabric down into the needle plate instead of piercing cleanly, which also disrupts loop formation. This cause is so common that a fresh needle should always be your first troubleshooting step.

The fix: Install a brand-new needle. Do not just look at the old one and decide it seems fine; bends are often invisible. Match the type and size to your fabric using our sewing machine needle guide.

2. Wrong needle type for the fabric

This is the classic cause of skipped stitches on knit and stretch fabrics. A standard sharp or universal needle pushes stretchy fibers aside instead of piercing between them, so the loop never forms properly. Owners report that switching to a ballpoint or stretch needle instantly fixes skipping on jersey, lycra, and other knits.

The fix: Use ballpoint needles for knit fabrics, stretch needles for highly elastic fabrics like swimwear material, and sharp or microtex needles for tightly woven fabrics like quilting cotton. Universal needles are a compromise that works on many wovens but is not ideal for knits.

3. Needle inserted incorrectly

A needle pushed only partway up into the clamp, inserted with the flat side facing the wrong direction, or left slightly loose sits at the wrong height or angle. Even a millimeter of difference changes where the thread loop forms relative to the hook, producing regular, rhythmic skipped stitches.

The fix: Loosen the clamp screw, push the needle fully up into the clamp until it stops, orient the flat side exactly as your manual shows, and tighten the screw firmly. If you recently changed the needle and the skipping started immediately after, this is the prime suspect.

4. Threading mistakes

If the upper thread misses a guide, is not seated in the tension discs, or has popped out of the take-up lever, thread delivery to the needle becomes inconsistent and stitches skip. Threading with the presser foot down is the usual culprit: the discs stay closed, the thread never seats, and tension fluctuates stitch to stitch.

The fix: Rethread the entire upper path from the spool with the presser foot UP. Confirm each guide, the tension discs, and the take-up lever. This same mistake causes jamming and thread nests too, so if you are seeing those as well, one careful rethreading may fix everything.

5. Lint and debris in the bobbin area

Lint packed around the bobbin case and feed dogs interferes with the hook’s rotation and the thread loop, causing intermittent skips that come and go. Skipping that gets gradually worse over a long sewing session is a classic lint symptom.

The fix: Remove the bobbin plate and clean underneath thoroughly with the machine brush. Pay special attention to the area around the bobbin case and feed dogs. Do not blow into the machine with your mouth; moisture causes rust. Clean this area every few projects, more often with fuzzy fabrics.

6. Wrong needle size for the thread or fabric

A needle too small for heavy thread cannot carry the thread down cleanly, and a needle too fine for heavy fabric deflects on impact, both of which disrupt loop formation. Sewing denim with a 80/12 universal needle, for example, commonly produces skips on the thick seams.

The fix: Size the needle to both the thread and the fabric. Heavy thread and heavy fabric need 90/14, 100/16, or larger. Fine fabrics need 70/10 or 80/12 so the needle does not push the fabric into the plate. When skipping happens only on thick seams, go up a needle size before anything else.

7. Timing is off (mechanical)

If you have a new correct needle, proper threading, a clean bobbin area, and the machine still skips on all fabrics, the needle-to-hook timing has likely slipped. Timing shifts after a hard needle break, a jam, or a drop. This is not a setting you can adjust at home on modern machines.

The fix: Take the machine to a service shop. Timing adjustment is precise professional work. Continuing to sew on a mistimed machine can damage the hook and needle plate, turning a routine adjustment into an expensive repair.

Diagnose It: Skip Pattern to Cause

Skip pattern	Most likely cause	First thing to try
Skips only on knit or stretch fabric	Wrong needle type	Switch to ballpoint or stretch needle
Skips on all fabrics, started suddenly	Bent or dull needle	Install a brand-new needle
Skips started right after a needle change	Needle inserted incorrectly	Reinsert fully up, flat side correct, tighten screw
Irregular skips plus loopy stitches	Threading mistake	Rethread with presser foot UP
Skips that worsen over a long session	Lint in bobbin area	Clean under the bobbin plate
Skips only on thick seams or heavy fabric	Needle too small	Go up one or two needle sizes
Skips on everything after trying all fixes	Timing off	Professional service

Quick Fixes by Fabric Type

Knits and stretch fabrics: Ballpoint or stretch needle, slightly longer stitch length (3mm), and do not stretch the fabric while sewing. A walking foot helps on very stretchy material. Polyester thread (which has some give) outperforms cotton here.

Wovens (quilting cotton, linen, broadcloth): Fresh universal or sharp needle in 80/12, correct threading, middle tension. Skips on plain quilting cotton with a new needle almost always mean a threading or lint problem.

Denim and heavy fabrics: Denim or jeans needle in 90/14 or 100/16, slower speed, and never force thick seams through. If the machine struggles, hand-crank over the thickest intersections.

Sheers and lightweight fabrics: Sharp or microtex needle in 70/10 or 80/12, and support the fabric so it does not get pushed into the needle plate. A straight-stitch plate (single small hole) prevents fabric from being pushed down and eliminates many skips on sheers.

When to Get Professional Service

Take the machine to a service shop if:

Skipping persists on all fabrics with a new correct needle, proper threading, and a clean bobbin area. You have eliminated every user-fixable cause; timing or hook wear is the likely culprit.
The needle hits the bobbin case or needle plate. Stop sewing immediately. This is a timing problem, and every stitch risks further damage.
Skipping started after a violent needle break, a bad jam, or a drop. These events knock timing out of alignment even when everything else looks normal.
The hook or bobbin case shows visible wear, nicks, or rough spots. Worn hook surfaces cannot catch the thread loop reliably, and hook replacement is professional work.
It has been more than a year or two of regular use without service. Wear accumulates, and a standard $75 to $150 service restores stitch quality on machines worth keeping.

FAQs

Why does my sewing machine skip stitches on stretchy fabric?
You are almost certainly using the wrong needle type. Standard needles push knit fibers aside instead of piercing between them. Switch to a ballpoint needle for knits or a stretch needle for very elastic fabrics, and the skipping usually stops immediately.

Can old thread cause skipped stitches?
Yes, indirectly. Weak, fuzzy, or degraded thread does not form a clean loop for the hook to catch. If your thread is old or bargain quality, try a fresh spool of decent polyester thread as part of your troubleshooting.

Why does my machine skip stitches only sometimes?
Intermittent skipping points to lint buildup (worsens as you sew), a thread path snag, or a needle that is only slightly bent. Clean the bobbin area, check the thread path, and install a fresh needle.

Should I adjust the bobbin tension for skipped stitches?
No. Bobbin tension is factory-set and is not a cause of skipped stitches. The causes are the needle, threading, lint, and in rare cases timing. Leave the bobbin screw alone.

My machine skips after I changed the needle. What did I do wrong?
The new needle is probably not pushed fully up into the clamp, or the flat side faces the wrong direction. Loosen the screw, reseat the needle firmly, and tighten. Also confirm you installed the right type and size for your fabric.

Is skipped stitching a sign I need a new machine?
Rarely. On machines that originally cost $150 or more, skipped stitches are almost always fixed by a needle change, correct threading, cleaning, or a professional timing adjustment ($75 to $150). Only very cheap machines with worn-out hooks are better replaced than repaired.

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Verdict

Skipped stitches are a needle problem until proven otherwise: fresh, correct type, correct size, fully seated. After the needle, rethread with the foot up and clean the lint out of the bobbin area. Match the skip pattern to the diagnostic table, fix in likelihood order, and you will resolve nearly every case without a service visit. When nothing user-fixable works on any fabric, let a professional check the timing rather than sewing on and risking real damage.