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Author Topic:   E-TEC throttle linkage

cinegamma posted 06-16-2010 10:21 PM ET (US)
I will try my best to explain this. On my 90 hp E-TEC the throttle cable from the console is connected to a black plastic bracket on the side of the cylinder block. That bracket pushes a roller which moves a metal rod to open/close the throttle. There is a "stop" built into the cylinder block that keeps the black plastic bracket from moving past a certain point when the throttle control is set to wide open. However, the roller and metal rod still have about 1/2 inch of movement beyond the "stop". Is there extra throttle beyond the "stop" in the throttle linkage?

jimh posted 06-16-2010 11:44 PM ET (US)
On an E-TEC 90-HP, the moving portion of the remote throttle cable connects to the throttle cam, which pivots on a boss machined into the engine block. The throttle cam pushes against a roller on the throttle lever. The shape of the throttle cam translates the motion of the remote throttle handle into movement of the roller and thus the throttle lever. The throttle lever connects via a metal rod linkage to the throttle body shaft, opening the throttle. The throttle is considered to be wide-open then the throttle plate is oriented in the throttle body so as to have minimal restriction of the air flow. If the throttle body is rotated further, the air flow is restricted as the throttle begins to close the passage.

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Author	Topic: E-TEC throttle linkage
cinegamma	posted 06-16-2010 10:21 PM ET (US) I will try my best to explain this. On my 90 hp E-TEC the throttle cable from the console is connected to a black plastic bracket on the side of the cylinder block. That bracket pushes a roller which moves a metal rod to open/close the throttle. There is a "stop" built into the cylinder block that keeps the black plastic bracket from moving past a certain point when the throttle control is set to wide open. However, the roller and metal rod still have about 1/2 inch of movement beyond the "stop". Is there extra throttle beyond the "stop" in the throttle linkage?
jimh	posted 06-16-2010 11:44 PM ET (US) On an E-TEC 90-HP, the moving portion of the remote throttle cable connects to the throttle cam, which pivots on a boss machined into the engine block. The throttle cam pushes against a roller on the throttle lever. The shape of the throttle cam translates the motion of the remote throttle handle into movement of the roller and thus the throttle lever. The throttle lever connects via a metal rod linkage to the throttle body shaft, opening the throttle. The throttle is considered to be wide-open then the throttle plate is oriented in the throttle body so as to have minimal restriction of the air flow. If the throttle body is rotated further, the air flow is restricted as the throttle begins to close the passage.