Volvo RWD 120-130 Forum

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Rough Idle - SU problem? 120-130

The SU manifolds have a bypass tube that connects the two sides. If a throttle is closed on one carb it can pull through that bypass tube and the engine won't completely miss on those two cylinders.

On my Weber manifolds each individual cylinder is isolated from all the others - so it is very dificult to get them all doing the same thing at idle.






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New Rough Idle - SU problem? [120-130]
posted by  Tommy  on Tue Oct 7 09:00 CST 2003 >


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