Found problem intermittent starting on 4520.

[Cidertom]

Problem: Intermittent starting issue 4520
Symptoms: Key on, fuel solenoid pulls in. on move key to "start" Gages cycle and the tach gage starts "ticking" one a second increasing reading each time. No starter function.

Tests: Battery above 12 Volts holds voltage during attempt to start. Battery posts clean and tight Ground cable attachment sound. Voltage at starter terminal 6 volts.

Troubleshooting: Using a needle probe through insulation on battery cable , found 6 volts 1/2 inch from positive battery terminal.

Replaced end on cable and no more problem.

Examination of faulted part: The factory potted end looked good, but on cutting it open it had corrosion inside and was not making good connections. Many of the copper wires had deteriorated to nothing.

 

[jenkinsph]

Thanks for posting your end results.

 

[kebo]

Poor connections on battery terminals, spade lug terminals, and mate-n-lock (in line) connectors and other styles of connectors have caused MANY intermittent issues over the years for a lot of people, and some never get totally figured out. Some of them can be very hard to debug or diagnose, though.

 

[sunnyside360]

Nasty, nasty problem. Congrats on figuring out rare type of failure.