Quote:
Originally Posted by 97 SL320
On the 2nd engine, did it shut off clean or did it smoke / run away? When a diesel is cranking, it is at max fuel ( Governor is at zero RPM so the rack is at full stroke ). Some engines ( usually industrial that have a low operating max limit. ) have a cold start lever that increases cranking fuel even more.
Can you rotate the engine by hand easily?
What are you using for an oil filter / housing / cooler?
Have you pulled the glow plugs and tried to crank? This would determine if there is a near hydralock condition.
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In the condition when it's hard to crank, it is also "harder" to turn over by hand. It never stops turning over, just cranks slower/harder. As for the cooler it is omitted. The oil filter is a remote housing kit from Mercedes diesel 4x4. Oil pressure is great and it idled cold around 80 psi. When cranking it even climbs to 80 psi. I've had the glow plugs and injectors out. Glow plugs all glow red hot when switch is on.
The second motor shut off as if I pulled the stop switch. It just "fell on its face". Just like any diesel when you kill the fuel to the engine. It smoked a lot when cranking but smoked a lot less when it fired up. Nothing seemed different than any of my other Diesel engines I've run in other applications.
I just pulled the valve cover and checked and I'm actually at 5* chain stretch. I wouldn't have thought that's enough to do this but maybe it is? I pulled all five injectors. Cylinders 2,3,5 have a ton of fuel and grime in the prechambers. I'm gonna clean the prechambers out and crank the motor a little without the injectors and see what comes out.