ICT Propulsion Block: The Complete Guide

When you look at a three-candle Fair Value Gap, the attention naturally goes to the gap itself — the space between candle 1's close and candle 3's open. But the gap was created by something: the large displacement candle in the middle. That candle — candle 2 — is the propulsion block. It is the institutional delivery candle that moved price so aggressively it left an imbalance behind on both sides.

Understanding the propulsion block requires no new entry logic and no new theory. It is a label for the displacement candle that you are already familiar with. What it adds is a specific entry level within the FVG zone — the mean threshold at the 50% of candle 2's body — and a precise invalidation rule that makes position management cleaner than either a standalone OB or a generic FVG entry.

What the Propulsion Block Is — The Exact Structure

A Fair Value Gap consists of three candles: candle 1, candle 2 (the displacement candle), and candle 3. The gap exists between candle 1's close and candle 3's open. Candle 2 is the body that sits inside that gap — the candle whose momentum was so strong that it left price inefficiency on both sides.

The propulsion block is the body of candle 2. Not the full candle including wicks — specifically the open-to-close body of candle 2. The name comes from its function: this is the candle that propelled price away from the underlying order block that preceded it. It is the institutional execution candle — the moment the algorithm deployed the orders it accumulated in the OB and drove price toward the next liquidity target.

When price subsequently retraces into the FVG zone, it will enter the propulsion block. Within the propulsion block, the mean threshold — the 50% midpoint of candle 2's body (open + close) / 2 — is the primary entry level. This is the most concentrated zone of institutional order flow within the FVG. Entering at the mean threshold means entering at the centre of the candle that the algorithm used to deliver price — the point of maximum institutional density within the imbalance.

The connection to the FVG 50% CE: the 50% CE (Consequent Encroachment) of the full FVG is measured between candle 1's close and candle 3's open. The mean threshold of the propulsion block is measured between candle 2's open and close. These two levels are very close to each other — often within 2–5 NQ points — because candle 2's body is centred within the gap. In many setups they are effectively the same entry zone, just approached from two different measurement frameworks.

Propulsion Block vs Order Block — The Key Distinction

The most important conceptual distinction in propulsion block trading is understanding where it sits relative to the order block. These are not the same structure and they do not serve the same entry purpose.

The practical application: when price returns to the FVG zone, it first reaches the OB (which sits just outside the FVG) before entering the propulsion block. A valid setup produces two potential entry zones on the retrace — the OB as price approaches the FVG, and the mean threshold of the propulsion block (candle 2) as price moves deeper into the gap. Which to use depends on the confluence available and the R:R required:

Entry at the OB: earlier entry, wider stop (beyond OB wick), captures more of the FVG zone. Entry at the propulsion block mean threshold: later entry, tighter stop (stop at full FVG extent rather than OB wick), better R:R but requires more confidence that price will retrace to the deeper level.

The Mean Threshold — The Propulsion Block Entry Level

The mean threshold is the defining measurement of the propulsion block. It is calculated as:

Mean threshold = (Candle 2 Open + Candle 2 Close) / 2

For a bullish propulsion block (candle 2 is a large bullish candle in a bullish FVG): the mean threshold is midway between candle 2's close (higher value) and candle 2's open (lower value). As price retraces downward into the BISI, the entry is a long limit at the mean threshold — the 50% mark of the bullish displacement candle's body.

For a bearish propulsion block (candle 2 is a large bearish candle in a bearish FVG/SIBI): the mean threshold is midway between candle 2's open (higher value) and candle 2's close (lower value). As price retraces upward into the SIBI, the entry is a short limit at the mean threshold.

The mean threshold level has institutional significance beyond its geometric position. Candle 2's body represents the range within which the institutional delivery candle traded. The 50% midpoint is the level where, if price returns and closes a body beyond it, the institutional delivery momentum from that candle has been fully absorbed — the setup is invalidated. Conversely, if price retraces to the mean threshold but holds (no body close through it), the institutional order flow from candle 2 is still intact and the continuation move is likely.

Valid vs Invalid Propulsion Block

Propulsion Block and CRT — The Same Candle

Traders who have studied Candle Range Theory will recognise that the propulsion block and the CRT expansion candle (Phase 1) are the same thing. In CRT Phase 1, the expansion candle sweeps a prior extreme and creates the FVG inside the candle range. That expansion candle is candle 2 of the FVG — the propulsion block. The CRT Phase 2 retracement entry into the FVG at the 50% CE is the same as the propulsion block mean threshold entry.

CRT provides the framework (which phase is the market in?). The propulsion block provides the specific entry structure (which candle's midpoint is the entry?). They describe the same price event from different angles. A CRT Phase 1 expansion candle that is also the propulsion block of the 1st Presented FVG after a BSL sweep is the exact same setup labelled from three different frameworks simultaneously. This is not coincidence — all three frameworks are describing the same institutional delivery mechanism at the candle scale.

Propulsion Block Mean Threshold vs FVG 50% CE

The most common practical question about propulsion blocks: is the mean threshold the same as the FVG 50% CE? Usually, but not exactly always — and understanding when they diverge matters.

FVG 50% CE: Measured from candle 1's close to candle 3's open. The midpoint of the gap zone.

Propulsion block mean threshold: Measured from candle 2's open to candle 2's close. The midpoint of the displacement candle's body.

When candle 2's body is perfectly centred within the FVG (its open is at candle 1's close level and its close is at candle 3's open level), the two levels are identical. In practice, candle 2 has wicks — it opened slightly inside the gap range and closed slightly inside it, with wicks extending toward the FVG boundaries. The result is that the mean threshold is typically within 5–10 NQ points of the 50% CE, near the centre of the gap.

When the two levels meaningfully diverge — more than 10–15 NQ points apart — trade the mean threshold of the propulsion block. The propulsion block mean threshold measures the density of institutional execution, not the geometric midpoint of the gap. The institutional order fill concentration is in candle 2's body, not the gap's midpoint.

Full Walkthrough — NQ Bearish Propulsion Block

Pre-session: Daily bias bearish. Pre-market high: 21,508 (BSL). OB identified from prior session: last bullish candle before prior session's bearish displacement — body range 21,382–21,436. OB is in premium (above daily EQ 21,220). Plan: Judas sweep above 21,508 at NY open → MSS → propulsion block entry.

9:30 AM — Sweep: NQ spikes to 21,554, sweeping BSL above 21,508. Body closes at 21,472 — back inside range. Sweep confirmed.

9:48 AM — C2 propulsion block fires: A large bearish candle opens at 21,484 and closes at 21,308. This is a 176-point C2 displacement candle. It creates a FVG: C1 close 21,484, C3 open 21,292. FVG range: 21,292–21,484. FVG 50% CE: 21,388. Mean threshold of C2: (21,484 + 21,308) / 2 = 21,396.

Entry: Limit short at 21,396 (mean threshold — 8 points above FVG 50% CE). Price retraces from 21,308 to 21,402 at 10:08 AM during Silver Bullet window.

Stop: Above sweep wick at 21,554 — buffer to 21,560. Distance: 164 points.

T1 (IRL): PDL at 21,180 — 216 points, 1.3R. Hit 10:56 AM. Close 50%, stop to BE.

T2 (ERL): Equal lows 20,940 — 456 points, 2.8R. Hit following session.

Common Propulsion Block Mistakes

Confusing the propulsion block with the order block. These are adjacent structures, not the same structure. The OB is the candle before the move. The propulsion block is the large displacement candle during the move. On a chart where both are visible, the OB sits just outside the FVG and the propulsion block sits inside it. When price retraces, it enters the OB first (before the FVG boundary), then moves into the propulsion block. Trading the OB is a valid earlier entry; trading the propulsion block's mean threshold is a later but tighter entry. Know which you are trading.

Using body close of candle 2's wick as the mean threshold. The mean threshold measures candle 2's body — from open to close — not its full high-to-low range. Candle 2's wicks extend beyond the body into the surrounding gap. Using the wick midpoint instead of the body midpoint places the entry level outside the zone of maximum institutional density, degrading both the entry quality and the invalidation clarity.

Entering at the mean threshold without the liquidity sweep precondition. A propulsion candle that forms without a preceding liquidity sweep is a continuation candle — it represents price moving in the direction of an existing trend without the institutional manipulation sequence. These propulsion-looking candles can form valid entries, but they are not 1st Presented Propulsion Block setups. The sweep → propulsion block sequence is what elevates the setup to highest-priority. Without the sweep, you have a displacement candle but not a propulsion block in the ICT sense.

Not checking the zone — bullish propulsion in premium or bearish in discount. A large bearish displacement candle that creates a FVG in the discount zone is a bearish propulsion block in the wrong zone. The mean threshold entry from below (short in discount) is countertrend to the dealing range structure. The zone filter applies to propulsion blocks identically to any other PD array entry. Bearish propulsion = must be in premium. Bullish propulsion = must be in discount.

Frequently Asked Questions