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Keep throttle body's flap/butterfly open during smoke test?

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YOUR RESEARCHKeep throttle body's flap/butterfly open during smoke test?

Leading reported evidence

Smoke-test should i just open

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Suggestion · Original poster
If I want to open that for a smoke test should I just open that manually and put something under the flap so that it's stays open or is there a more sophisticated method for that?
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Keep throttle body's flap/butterfly open during smoke test?

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Leading evidence: 'Smoke-test should i just open' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Smoke-test should i just open' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Use gorilla force

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Suggestion
The issue with using gorilla force on the TB plate is possible damage to the sensor rotor attached to the sector gear at the end of the plate shaft that tells the ECU the TB plate is at the commanded angle.
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Keep throttle body's flap/butterfly open during smoke test?

Use piece of wadded up rag

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Suggestion
I just use a piece of wadded up rag for smoke tests but anything soft should work.
Original post Read captured discussion
Keep throttle body's flap/butterfly open during smoke test?

Use standard coiled spring

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Suggestion
tell you that I my '99 cable throttle car it uses a standard coiled spring on the shaft to the right of the throttle body.
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Keep throttle body's flap/butterfly open during smoke test?

Frequently discussed actions (4)

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Smoke-test should i just open

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Suggestion · Original poster
If I want to open that for a smoke test should I just open that manually and put something under the flap so that it's stays open or is there a more sophisticated method for that?
Original post Read captured discussion
Keep throttle body's flap/butterfly open during smoke test?

Use gorilla force

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion
The issue with using gorilla force on the TB plate is possible damage to the sensor rotor attached to the sector gear at the end of the plate shaft that tells the ECU the TB plate is at the commanded angle.
Original post Read captured discussion
Keep throttle body's flap/butterfly open during smoke test?

Use piece of wadded up rag

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
I just use a piece of wadded up rag for smoke tests but anything soft should work.
Original post Read captured discussion
Keep throttle body's flap/butterfly open during smoke test?

Use standard coiled spring

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
tell you that I my '99 cable throttle car it uses a standard coiled spring on the shaft to the right of the throttle body.
Original post Read captured discussion
Keep throttle body's flap/butterfly open during smoke test?

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4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Rennlist: 1 discussions

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Generation: 20261026T165820Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Kind of basic question but what kind of spring/gear mechanism is behind that throttle body's butterfly flap? If I want to open that for a smoke test should I just open that manually and put something under the flap so that it's stays open or is there a more sophisticated method for that? Of course another method is to remove that TB completely but I would like to keep that in place so that possible leak from that TB seal is also possible to detect.

POST 2Original post

You can just put something in there to keep it open , just don’t turn on the power and make sure it’s not something that will fall in

POST 3Original post

Quotes source posts: 17594950, 17594950

You don't list your year so it's hard to say. I can tell you that I my '99 cable throttle car it uses a standard coiled spring on the shaft to the right of the throttle body. I don't know how it works on e-throttle cars. I just use a piece of wadded up rag for smoke tests but anything soft should work.

POST 4Original post

OP - The TB has a mechanical drive geared with an electric stepper motor metered by a couple of potentiometers.The gears are sturdy enough to move hundreds of thousands of times while still overcoming the significant torsional strength of the closing spring. The issue with using gorilla force on the TB plate is possible damage to the sensor rotor attached to the sector gear at the end of the plate shaft that tells the ECU the TB plate is at the commanded angle. When I smoke my intake system, I push the butterfly valve at the bottom and wedge a 3/4” silicon stopper.

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