. I started the other day 1/2 turn at 19degrees F. Now the temps are in the 50's and it's starting on 4 cylinders at cold idle. It seems to run fine when warm though. It had the same symptoms about 3 months ago which was a faulty glow plug. The glow plugs seem to check out ok. Could this be an injector issue? It's due for a valve adjustment, however I don't think that would be the cause of starting on 4 cylinders. Any suggestions?

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85 300TDT 456,000 orig. miles

I just had the same issue on my 300D with a "weak" GP that was showing about 10 or 20 ohms cold. It would start on 4 of 5, then nail for about 10 seconds.

All my glow plugs seem to be around 1 OHM. Isn't that ok?, or am I reading it wrong?.

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85 300TDT 456,000 orig. miles

That's about right, but it is possible for one to be weak and still give the correct resistance. I would adjust the valves first if it's due.