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FJR Motorcycle Forums
Technical & Mechanical Problems
Help with the The Really, Definitely Completely Un-Authorized TBS
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<blockquote data-quote="Constant Mesh" data-source="post: 1144486" data-attributes="member: 615"><p>I assume that the '13 & 14 FJR's don't have this "stone age" fast idle system. With the servo controlled throttle valves maybe the engine idle is totally controlled by the engine computer.</p><p></p><p>Has your cold idle dropped back down to 2K or so?</p><p></p><p>I assume there's no user adjustment on the '13 & 14 idle speed. I wonder if the idle is smoother and less erratic on these units?</p><p></p><p>Getting rid of the wax motor, the coolant hoses, and all the paraphernalia on the throttle bodies had to be a good thing.</p><p></p><p>I believe there's good info to be had by hooking up your syncing tool before the engine is warm. The fast idle air valves are open at a cold start so you'll see lower vacuums at the beginning and then the vacuums gradually increase as the air valves slowly close. If an air valve is misbehaving relative to the others you'll notice it immediately. I believe you would have spotted this problem with your syncing tool and a cold start.</p></blockquote><p></p>
[QUOTE="Constant Mesh, post: 1144486, member: 615"] I assume that the '13 & 14 FJR's don't have this "stone age" fast idle system. With the servo controlled throttle valves maybe the engine idle is totally controlled by the engine computer. Has your cold idle dropped back down to 2K or so? I assume there's no user adjustment on the '13 & 14 idle speed. I wonder if the idle is smoother and less erratic on these units? Getting rid of the wax motor, the coolant hoses, and all the paraphernalia on the throttle bodies had to be a good thing. I believe there's good info to be had by hooking up your syncing tool before the engine is warm. The fast idle air valves are open at a cold start so you'll see lower vacuums at the beginning and then the vacuums gradually increase as the air valves slowly close. If an air valve is misbehaving relative to the others you'll notice it immediately. I believe you would have spotted this problem with your syncing tool and a cold start. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Help with the The Really, Definitely Completely Un-Authorized TBS
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