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MG MGB Technical - Engine spluttering solved (I hope).

A while back I posted about my B totally losing power and spluttering a lot when I tried giving a workmate a lift in it. The problem went away by itself only to reappear yesterday.

This time I think I found it though. I was carefully checking everything. Carbs OK, coils leads all OK. I just happened to notice when I revved the engine though that a wire was coming off one of the terminals on the coil. Seems it was the wire between the coil and the distributor. The spade where it connects to the coil was loose.

When the engine revved there was just enough movement and vibration for the spade to slide off the terminal. The engine would then splutter and start to die and the spade would remake contact so it would fire again. The wire is short enough and stiff enough that it wasn't falling away when the spade came loose.

A quick pinch with some pliers and shifting the coil down slightly in it's bracket sorted it!

Simon
Simon Jansen

Yup, that sounds about right Simon. It reminds me of my 57 Healey 100-6. It had a loose rivet on the regulator, and if the RPM dropped too low, the engine would quit.

I was trying to sell it to a Frenchman in Albuquerque, New Mexico, and when I drove it, it was fine. When he drove it, it died every time. I almost sold it to him just because he got so mad that I could drive it and he couldn’t.

I couldn’t find anyone willing to give me $1000 for the car, so I gave up and traded it straight across for a 58 BSA 650 Super Rocket about 3 days before the coldest winter in Albuquerque history. Riding a motorcycle when it is 15F below zero is no fun. I finally sold the BSA for $800 and bought a Mini for $200 and left town.

Too bad I wasn’t smart enough to keep this stuff, eh?

Healey pic attached. How many of you would give $1000 for it today?

Charley

C R Huff

Dang Simon, a lot of people pay big bucks for rev limiters and and you went and defeated a free one ;-) Cheers - Dave
David DuBois

Here is another rev limiter, although it worked on temperature! An old magneto ignition motorcycle. Started up cold ,fine ran along quite well for a while , then when it got hot started to miss fairly regular. Allowed to cool fired up again ok, ran ok till hot again, miss started all over again. Problem; inside the coil( of the magneto.), was a break in the wire. While cold, conduction was good as it heated up there was actually a separation of the wires, just for intermittent contact. Devil of a job to figure! MIke
J.M. Doust

This thread was discussed on 04/04/2011

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