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- Thu Oct 24, 2019 2:57 pm
- Forum: MGB Technical
- Topic: Vacuum advance misfire
- Replies: 33
- Views: 41555
Re: Vacuum advance misfire
It could be well worth considering whether there is a leak in the 'diaphram' that pulls the base plate back and forth in the distributor. This would cause air to enter the inlet manifold and cause symptoms similar to the ones you describe. A quick and easy check would be to detach the hose at the ma...