B7100 won’t start weird glow plug indicator

Turk999

Member

Equipment
B7100 HST
Feb 17, 2014
51
0
6
Weirton, WV
Went out to star the b7100 and it would turn over a black smoke came out. I checked the glow plug indicator to find it not turning red. So I figure it went being I could not see in the hole very well. When the new one came one I pulled the old one to find it still intact. I went head and put the new one, being I had the old one out already. Then when I turned the key to heat it the new melted in half a second. I then took it out and put the put one back in. Turned the key and nothing. I mean I can turn it to start and it does turn over and the black smoke comes out but I’m not sure what is going here. The old indicator never gets hot. Any help or idea would me great. Thanks
 

Roadworthy

Well-known member
Lifetime Member

Equipment
L2501 HST
Aug 17, 2019
1,649
526
113
Benton City, WA
A glow plug may fail open or shorted. Yours may have shorted, burning out your first indicator without you seeing it. Put an ohmmeter on the old one. It should read about zero ohms. If it reads open it's burned out. Try replacing the glow plug(s) and the indicator.