Change the pre=heat (glow plug) relay.
Had the same problem with my transit, turned out to be fuel starvation due to blocked fuel filter.
Yes the glow plug fuse is the R2 relay in the fuse box, there is a fusible link as well that is the thick red one coming out the front of the fuse box
no glow plugs
You can test each glow plug while still installed in the engine. Just get a test light and connect it to the positive terminal of the battery and touch the point of the test light to each glow plug terminal. If the light lights up the glow plug is good if not it is bad. You can replace the one or more that are bad or replace them all since they may not be too far behind.
If its th glow plug light ie orange and looks like a a spring that can be as simple as a dirty egr valve or an ecu fault.
You have a glow plug failing. The black smoke is unburned fuel.
how to install glow plug on ford f350 l997
Where is it heater glow plug fuse isuzu
We're do I find glow plug relay
where is the glow plug relay on a vw sharan 97
you need to check your glow plug relay it is most likely going out you can jumper it to see if the glow plug light will come back on to start engine