No spark

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Author Message   Chris Tokarski Yet to post message Username: 49bentley Post Number: 1 Registered: 10-2024 Posted on Monday, 21 October, 2024 - 00:11:    Good Day. I'm a new member and require some help. Restoring a 1949 Bentley MK VI. Trying to start a rebuilt engine, but no spark for 1-2-3 cylinder. 4-5-6 look good. all new wiring, spark plugs and even changed rotor. All contacts in cap are clean, and ran a continuity check to all. Any help would be appreciated. Thanks   David Gore Moderator Username: david_gore Post Number: 4281 Registered: 04-2003 Posted on Monday, 21 October, 2024 - 07:18:    Check for wear on the rotor drive shaft and bush and clearances for each contact as the rotor rotates around inside the cap.   David Hughes Experienced User Username: wedcar Post Number: 175 Registered: 07-2004 Posted on Monday, 21 October, 2024 - 11:25:    Chris These distributors have two sets of points, one set fires 123, one set fires 456, ensure that the synchronisation of the points are correct. This is almost certainly your issue. MKVI Ignition MKVI Ignition.pdf (1178.0 k)   Jeff Martin Frequent User Username: jeff_r_1 Post Number: 702 Registered: 07-2018 Posted on Monday, 21 October, 2024 - 16:15:    Are you running the correct distributor cap, it should have the wires out the side, not coming out the top ?   Jeff Martin Frequent User Username: jeff_r_1 Post Number: 703 Registered: 07-2018 Posted on Monday, 21 October, 2024 - 16:19:    Here's a photo of the correct one:   Chris Tokarski New User Username: 49bentley Post Number: 2 Registered: 10-2024 Posted on Monday, 21 October, 2024 - 20:02:    Thanks David Gore, David Hughes and Jeff for the info. I'm using the correct distributor cap. I've ordered a new set of points, and will work on the synchronization. Thanks for the documentation. Will post results in about 2-3 weeks after parts arrive. Thanks again.   Jeff Martin Frequent User Username: jeff_r_1 Post Number: 704 Registered: 07-2018 Posted on Tuesday, 22 October, 2024 - 02:16:    For anyone else reading this: I use these points from BWD part #A61 They have a large contact area. Not sure if they're available in Australia though.   ChristopherCarnley Unregistered guest Posted From: 13.41.190.36 Posted on Monday, 21 October, 2024 - 19:41:    In figure M14, do not insert the small cell (battery), just leave the ignition switched on for a moment, to check. The lamp method is the best one to follow. (Message approved by david_gore)   Chris Tokarski New User Username: 49bentley Post Number: 3 Registered: 10-2024 Posted on Friday, 01 November, 2024 - 23:41:    Thank you all. New points arrived, and now installed. All cylinders firing.   David Hughes Experienced User Username: wedcar Post Number: 176 Registered: 07-2004 Posted on Saturday, 02 November, 2024 - 10:18:    Chris Great news, please advise us what was the problem, and the solution. Regards David   Chris Tokarski New User Username: 49bentley Post Number: 4 Registered: 10-2024 Posted on Saturday, 02 November, 2024 - 23:26:    Looks like on one of the points the fibre heel was partly broken. Replacing the points solved the issue.

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