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MG MGA - Electrical or ?
|Yesterday I was gave my MKII and extended warm up. I had driven about 10 miles and was making a U-turn when the motor died. I tried to start it with compression in the last few feet it was coasting to a stop. I tried to start it with the starter but was unsuccessful. The motor turn over quickly but no go. |
I lifted the hood and checked out the coil wire and removed the distributor cap, but found nothing out of sorts. When I got back in to try it once more, it fired up as nothing was wrong. It ran fine to the five miles to my house.
Today I cleaned all the electrical connections on the control box, fuse panel and distributor and coil. After cleaning all the connections and replacing one connector on the control box I thought it would run. The points looked a little gray from corrosion, but with a little emery cloth that should have cleaned them enough. However it did not start up.
I checked the voltage at the distributor with the ignition on and got about 12.50 volts.
While waiting for my son to help me check for spark I tried to start the motor one more time, and as you can guess it started right up.
((Last year I had a similar problem when the engine suddenly died. I rolled into a driveway popped the hood and wiggled the connections at the control box. As soon as I touch a connection I had power back,as I could see the the gas gauge come to life. It started fine at that time and has been no problem after numerous drives. ))
My coil is a Lucas sports coil,the points/condenser were changed about 12 years ago when I had the distributor rebuild, but has only seen about 6000 miles on those in that time.
Any ideas what may be the problem?
|Clean all your grounds!|
Checking out Barney's site there are more grounds than I thought there were. Sorry about taking so long to say thanks for your reply.
These are exactly the symptoms I had when the condenser failed in a brand new distributor. Once replaced I cut the failed one in half and I was not surprised it failed and then restarted. The contact was not soldered relying on the can to maintain contact by pressure. I presume when it got warm the pressure was reduced and contact was lost but when it cooled it made contact again. Unfortunately I didn't belief it was anything to do with the 'first trip disi' so I suspected coil and wasted a lot of time before eventually changing condenser.
I had a Healey 100-6 that would often die when you started from a stop if you let the engine fall below idle speed as you released the clutch pedal. It would restart if you "played around" in the engine bay for a while. It turned out to be a loose rivet connection at a terminal on the regulator (control box?). After finding it, you could just touch the connection and the car would start right up.
|C R Huff|
This thread was discussed between 22/04/2016 and 29/04/2016
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