So my Blazer is having a no start but cranking issue. I managed to get it to start when it was around 60 degrees out, but in the morning when it's around 30, it wont start. The starter, relay and glow plugs are new. I have seen people replacing their fuel pump and filters to fix this issue.I have also seen posts about barely turning the key to start. I was thinking it may be the distributor. It is a 24v system and both the batterries are good. I was curious if there was anything else to look at first before replacing the filter.

 

24V. glow plugs, distributor - OK I'm lost what you running for a engine ?

 

It’s a 6.2L V8

 

6.2' S don't have a distributor
Sounds like the glow plugs are not cycling. It' common for the auto cycle unit to go out - It's mounted at the back of the engine close to where the distributor would be in a gas engine,

Also check the auto cycle solenoid, usually mounted on the inner drivers side fender well [ it looks like a ford starting solenoid ]

There is also on usually the riders side head a temp sending unit for glow plugs -

Is the dash glow plug indicator light coming on with key on? { but some times it does activate even tho all the glow plugs are not activating - all it takes is one plug to work and it will come on

And by the way just incase you didn't know - by being 24V your blazer should be a old military vehicle.