 Smoke show, Smoke machine results and a question |
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| Quinn Moore |
 May 28 2026, 04:20 PM
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Qmoore  Group: Members Posts: 130 Joined: 13-July 21 From: Lake Geneva, WI Member No.: 25,718 Region Association: Upper MidWest 
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'73 2.0 FI stock motor.
Has been running great. Until it wasn't. Idle issues, couldn't get it really dialed in. Running a little rough, idling around 1100. Not bad, but was rock solid at 950 rpm and smooth running (123 distributor) . Anyway, fast forward. Hooked up a smoke machine, found injector seal on #3 leaking. Ill replace. also noticed smoke (from the smoke machine) coming out of The butterfly valve (plate) rod ends. A tiny bit on the TPS side, and a little more on the other side. Not much, a little. Finally the question: Is that normal, serviceable, negligible? (The pictue of the TPS side, couldn't capture the smoke with my phone) Thanks for your input. QM   |
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| emerygt350 |
May 29 2026, 06:54 AM
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Advanced Member Group: Members Posts: 3,589 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
A leak is just going to increase the idle, not cause instability. That sounds more like a sensor issue. Have you got an air fuel gauge on it?
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