i cant seem to find the topic that shows all quests that can be completed staying level 3?

Free to Play

Black Knights' Fortress

Cook's Assistant

Demon Slayer[3]

Doric's Quest

Ernest the Chicken

Goblin Diplomacy

Myths of the White Lands

Pirate's Treasure

Prince Ali Rescue

The Restless Ghost[6]

Gunnar's Ground

Rune Mysteries

Shield of Arrav[8]

Swept Away

The Knight's Sword

Unstable Foundations

Members-only

A Tail of Two Cats[5]

Biohazard

Buyers and Cellars

Clock Tower

Cold War[4]

Digsite Quest

Druidic Ritual

Dwarf Cannon

Eagles' Peak

Elemental Workshop I

Enlightened Journey

Fishing Contest

Gertrude's Cat

Hazeel Cult

Hunt for Red Raktuber

In Pyre Need

Icthlarin's Little Helper

(Difficult)[5]

Jungle Potion

Lost City (Difficult)(9)

Lost Tribe

Merlin's Crystal

Monk's Friend

Murder Mystery

One Small Favour (Difficult)[7]

Perils of Ice Mountain

Plague City

Recipe for Disaster[1]

Ratcatchers[5]

Sea Slug

Sheep Herder

Shilo Village[2]

Tears of Guthix

The Feud

 

The Golem

The Tourist Trap

The Hand in the Sand

Tower of Life

Tribal Totem

Source:

http://runescape.wikia.com/wiki/Skill_pure

Correct me if I'm wrong, but don't the Shilo Village and Lost City battles potentially give you a combat level?

Read the link I gave you.