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I'm no engine wrench by a long shot but I have serviced some Perkies, oil, filters, ect. Dirty oil means nothing in reality. Being a new engine, I would not think that oil would dirty so quickly however, you must look at all aspects of this as well. What are the operating conditions?
How good is the fuel you're using?
How clean is the air filter?
Is the engine running correctly?
Is something damaged on the engine?
What type of engine crankcase oil are you using?
With such low hours, I would suggest following Greg's advice and calling the dealer/service rep. first. Bad fuel would be my first suspect on the gripe. I know of two perkies that have well over 5000 hours on them and there is no problem with starting even when the temps are down below 30F unless the fuel is gelled or has water in it. If you're using heating oil or marine fuel, the blend may be off which will cause the same problems, dirty oil and hard starting. These engine like nice clean filters and plenty of air too. I've seen them run smokey because of plugged air filters that actually look clean. The crankcase oil means a lot too. Junk oil will cause many problems with engine diesel or gas. If the C-C oil is junk, you may have already caused serious damage to the engine components even with low hours. Warranty or not, best to get a pro wrench in there that is qualified to work on Perkins engines. I had a Cummins that ran me in circles trying to figure out why it was not running properly. I wasted many hours and many dollars trying to fix it myself. I gave up and finally called in the Cummins service wrench who replaced the one bad O-ring in the injection pump in less than 5 minutes and billed me a whole 50 bucks. If I had just done that to begin with, I would have saved about $400.
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