Re: Hard Starting PowerMajor

I want to revisit the question about the "max fuel adjustment". If this was adjusted improperly, would this impact starting? It clearly did where it was used to adjust idle speed.

How would you check adjustment?

There is also the valve guides and seals question on the head?More than likely it is the rings than this area but you never know???

Also a word of caution when tinkering with the injection pump, if you do something wrong it could cost you the whole motor.Check the lift pump by cracking the bleed bolt on top of the fuel filter, if it is the original style, and see if fuel flows while cranking the motor.You can use the compression relief lever on front of the valve cover if you have one while turning the motor over.My lift pump has a "priming lever" on it and I use this instead of turning over the motor with the starter.

Also maybe Majorman and Sandymac can advise you on checking the cam timing.It is something I have not yet done to my small fleet.The injection pump timing would not be correct if the cam timing is off even if you set it to 23 degrees.

A couple other ideas came to mind about the hard starting...

1. When I had the engine apart to change pistons/rings I replaced the head gasket with a composite type whereas the original was copper. Would this make enough difference in compression?
Also what are your views about reusing head gaskets? NH said the copper type gasket was no longer available.

2. What about leak back thru the lift pump? There is no visible signs of leakage but maybe internal? I purchased a new pump for another tractor and will try that.

Do not re use head gaskets as this will lead to other problems like oil in the water or visa-versa.

Lack of hard work or a serviced injection pump at a reputable service agent are the most likely answer to your problem. I would try the easy one first, a run on a dynamometer could sort things out if you have no hard work.