Re: 1934 1101 coil problems, HELP!

Posted by HH56 On 2021/8/15 10:25:22

Faulty capacitors -- even brand new out of the box after coming straight from the store -- have been issues for several. It could be heat is causing a problem that goes away when cool again.

Others have had issues with a poor ground at or in the distributor body. If your distributor is a type that has a plate the contacts mount on which is moved by an advance mechanism and no wired ground connection to the case, some have had ground problems caused by worn bearings at the plate-case connection. On other distributors where the advance rotates the distributor case instead of a plate, a missing or broken external ground wire from the case to the advance mounting bracket for a solid connection to the block has had the same result. Vibration could be causing a shaky ground in either place to become intermittent.

Coils typically have their own separate voltage supply contact in the ignition switch so the switch itself might be at fault if that IGN or COIL contact is heating up and high resistance is causing an intermittent poor connection.

A ground issue can be ruled out with temporary jumper wires and might be worth trying. Temporarily hot wiring the coils might rule out an ign switch problem.

If everything ignition is ruled out what about some interruption in the fuel supply such as a partially clogged screen or filter where suction is pulling rust particles up and lets them fall away when the engine is off or something in the tank is floating around and temporarily interrupting the flow or even something partially blocking the tank vent opening. All have been found by others and cause issues such as the engine runs fine at idle and slow speed but as soon as more fuel is needed for actually moving or picking up speed the engine starts acting up.