Slow turning over 6.5 GM Diesel
Looking for some help with my 20 year old 6.5 GM Diesel. Just recently it started turning over real slow when starting. We replaced both batteries, same results. Checked connections at battery aga...
Forum Discussion
2003silverado wrote:
I don't want to beat a dead horse about connections, but...one of my work trucks is a 1987 6.2 diesel. Last fall into winter I had a hell of a time with slow cranking. I thought I checked all pertinent connections, but still had to jump it at times. I thought that since it wasn't used too often we compromised the batteries that were only 2 years old. I replaced the batteries but that did not fix the problem. Prior to this problem I also converted the truck to top post batteries from side post batteries. However, when checking connections I neglected to check the connection between the cable and the top post terminals which is tightened with 2 bolts per terminal. Those 2 bolts were very loose and slightly corroded on all terminals. After I cleaned and tightened those connections The truck started like new.
Not saying this is your problem, but I want to make sure you exhaust all cheap solutions before you replace the starter.
X2!!
I don't know how many cars and trucks I have helped with a "dead Battery" by simply cleaning the battery connections!
That being done, yes a diesel needs to spin at a certain speed to start. If like my 2001 5.9 with mechanical injectors at the correct speed it takes about a half engine revolution to start.
