Real ChatGPT answer · index seede2miyFR5PSscompleteAutomotive · car repair and maintenancecomparison

What compression and leak-down test numbers indicate a healthy motor when conducting a PPI on a high-mileage turbocharged Subaru STI engine?

ChatGPTgpt-62 queries11/1/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
What compression and leak-down test numbers indicate a healthy motor when conducting a PPI on a high-mileage turbocharged Subaru STI engine?
2 real searches · 1 real-search pass
Subaru EJ257 factory service manual compression pressure standard 142 171 psi maximum difference 7 psi leak down test specificationGoogle ↗
OBSERVEDConsequence
Subaru STI EJ257 leak down test acceptable percentage high mileage ringland PPIGoogle ↗
OBSERVEDReason

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

ChatGPT real searches (2)
Short factOther / navigationalComparisonConsequence50%Reason50%DefinitionInstructionYes / no

Classes come from the query-classifier (a local Laya model). 2 of 2 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.

Searches and sources

ChatGPT2 real searches · gpt-6
Subaru EJ257 factory service manual compression pressure standard 142 171 psi maximum difference 7 psi leak down test specification Google ↗
Subaru STI EJ257 leak down test acceptable percentage high mileage ringland PPI Google ↗

Queries

2 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
Subaru EJ257 factory service manual compression pressure standard 142 171 psi maximum difference 7 psi leak down test specification
OBSERVED
Google ↗
AI Mode ↗
—Consequence——1x
of 1
Subaru STI EJ257 leak down test acceptable percentage high mileage ringland PPI
OBSERVED
Google ↗
AI Mode ↗
—Reason——1x
of 1