My 79 MGB has been giving me a little trouble and yesterday it finally quit runnning. The hubby got out his trusty, and well worn, Hanynes and Bently Manuals and says "I've have it back on the road for you shortly". Well it's a day later and it ain't back on the road. Seems as if he has encounted a problem with the coil/distributor set-up that he is not familiar with.
I told him we needed to contact the experts (you). He agreed and said to give give ya the following info:
1. It appears to have an aftermarket distributor which is very similar to the 45DE4 but does not have an Anti Flash Shield nor an amplifier mounted to it. It does have some type of box around it but no wiring. The vacuum unit is attached to the top of it.
2. There is, what appears to be, an amplifier on the firewall with three #12 AWG wires (red, black, & purple) and also a very small cable with three wires (black, gray, & white). The red wire from the amplifier is attached to the positive side of the coil, the black wire to the negative side of the coil and the purple wire is attached to a screw grounding it to the car body. The cable with the three very small wires goes to a pick-up in the distributor.
3. The positive side of the coil has a white/light green wire which is feed from fuse #5 and then through the resistor wire before it is attached to the coil. The red wire from the amplifer is also attached to the positive side.
4. The negative side of the coil has a white/black wire which goes to the tachometer. The black wire from the amplifier is also attached to the negative side.
5. When the key is in the on position seven volts (7 V) can be read when the multimeter is attched to positive and negative terminal on the coil.
6. When the coil wire is removed from the distributor and placed near ground it does produce a good blue arc when the engine is turned over.
7. When a spark plug wire is removed and placed near ground it produces a very weak, intermitten arc when the engine is turned over.
8. The engine does try to start but just doesn't quite make it. When any plug is pulled it is wet with gas (that's after trying to start)
9. He switched the distributor cap, rotor button, and all wires from the 80 MGB to the 79 and it still acts the same and won't start.
10. Oh, the connector with the white/blue, white, and white black wire, is not in use.
Problem: The car has been running great but in the last few days it was becoming harder and harder to start. Today it didn't, and hasn't.
PLEASE HELP THE HUBBY FIX MY MGB and he said he would love to know what type distributor the car has. the cap and rotor button from the 80 fit but the insides look completely different
Your turn,
Naomi (Owner of a 1964 MGB, a 1979 MGB and a 1980 MGB, all repaired hundreds of times but still loved /ubbthreads/images/graemlins/smile.gif
I told him we needed to contact the experts (you). He agreed and said to give give ya the following info:
1. It appears to have an aftermarket distributor which is very similar to the 45DE4 but does not have an Anti Flash Shield nor an amplifier mounted to it. It does have some type of box around it but no wiring. The vacuum unit is attached to the top of it.
2. There is, what appears to be, an amplifier on the firewall with three #12 AWG wires (red, black, & purple) and also a very small cable with three wires (black, gray, & white). The red wire from the amplifier is attached to the positive side of the coil, the black wire to the negative side of the coil and the purple wire is attached to a screw grounding it to the car body. The cable with the three very small wires goes to a pick-up in the distributor.
3. The positive side of the coil has a white/light green wire which is feed from fuse #5 and then through the resistor wire before it is attached to the coil. The red wire from the amplifer is also attached to the positive side.
4. The negative side of the coil has a white/black wire which goes to the tachometer. The black wire from the amplifier is also attached to the negative side.
5. When the key is in the on position seven volts (7 V) can be read when the multimeter is attched to positive and negative terminal on the coil.
6. When the coil wire is removed from the distributor and placed near ground it does produce a good blue arc when the engine is turned over.
7. When a spark plug wire is removed and placed near ground it produces a very weak, intermitten arc when the engine is turned over.
8. The engine does try to start but just doesn't quite make it. When any plug is pulled it is wet with gas (that's after trying to start)
9. He switched the distributor cap, rotor button, and all wires from the 80 MGB to the 79 and it still acts the same and won't start.
10. Oh, the connector with the white/blue, white, and white black wire, is not in use.
Problem: The car has been running great but in the last few days it was becoming harder and harder to start. Today it didn't, and hasn't.
PLEASE HELP THE HUBBY FIX MY MGB and he said he would love to know what type distributor the car has. the cap and rotor button from the 80 fit but the insides look completely different
Your turn,
Naomi (Owner of a 1964 MGB, a 1979 MGB and a 1980 MGB, all repaired hundreds of times but still loved /ubbthreads/images/graemlins/smile.gif