4430 has a miss

Everyone,

I purchased a 4430 this year and it has been an awesome tractor. Tons of power, was told the engine had 500 hours on it but sat in the shed and used very little for about 10 years.

I noticed the other day it sounds like it has a slight miss. Where should I start looking? I was just getting ready to put it in the shed, and do a cab kit, lights, steps, muffler, and more.

It does smoke a little blue like rings stuck, thinking of maybe pulling the head and doing a ring job just to see.

Starts awesome if plugged in during cold weather, down to about 25 starts without plugging in or a can.

What does everyone think??
 
Not sure what's causing your miss but my
4430 has always had a little blue smoke
when first started and idling. Bought it
at 3,000 hrs. I've never had to add oil
between changes and it's got 10,000 hrs on
the original engine. Yes I use a squirt of
ether when the temp is under 50.
 

I think due to the fact tractor has been sitting in shed for 10 yrs I'll recommend adjusting rocker arm to valve clearances then adding some fuel conditioner to fuel tank & put tractor to work pulling a plow. Then if engine miss persists check compression on all cylinders.
 
An engine miss at light load/idle speed on tractors with Bosch A size D series injection pumps can be caused by one or more delivery valve gaskets broken inside a delivery valve holder the injection line threads on to. A quick check is to remove the suspect line from the holder and operate the hand primer while watching the holder outlet, there must NOT be fuel shoot out the holder. If fuel DOES come out when primer is used that holder has the high pressure gasket 1 410 105 001 broken. Engine miss can also be caused by severely worn plunger control sleeves, as equal fuel delivery between cylinders is not possible with worn sleeves.
 
I would NOT start by pulling anything apart, more than likely a fuel delivery issue, I have had good luck with adding seafoam.
 

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