[WPTA] 1979 Spitfire Carb Adjustment

[Gerald Van Vlack]

Are you certain the choke is fully released. That of course will cause a rich condition.
I'd be looking there for an issue.

JVV
________________________________
From: Wpta <wpta-bounces at autox.team.net> on behalf of candkkuhn--- via Wpta <wpta at autox.team.net>
Sent: Sunday, May 18, 2025 4:18 PM
To: wpta at autox.team.net <wpta at autox.team.net>
Subject: [WPTA] 1979 Spitfire Carb Adjustment

Hello All,

My 1979 Spitfire is running very rich (to the point of black smoke coming out of exhaust).  I attempted to adjust the carburetor needle valve by starting with the needle valve all the way out and turning using the Allen key adjustment tool to turn 1/4 turn at a time.  This had no effect.  Using a screwdriver to lift the carb piston still resulted in the engine rpm increasing.  I started over in the full rich position and turned the Allen key 3 turns to the lean position.  This had no effect.  Any suggestions?

Much appreciated,
 Chuck Kuhn
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