I have two JD F1145 mowers one starts right away and the other acts like it is going to start right away but then have to crank it about another 5 to 10 seconds before it starts and then it emits black smoke when it first starts ( I always wait for the intake heater to cycle ) but it runs good the whole time it is running and I changed the fuel filter and air filters but still the same . After it starts it runs fine it almost seems it loses prime any one had this problem ?
John Deere F1145 extended crank time to start
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Roadworthy
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Black smoke CAN be a sign of inadequate air flow. Be sure nothing is blocking the passage. It can also indicate the mixture is too rich, as in it's getting too much fuel.
joecdeere
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have you checked to see if heater is really working, not just the indicator?
TractorGuy
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May need to check compression.
Found this inexpensive kit at HF that might work. At least one review said they used it on a Yanmar engine in a JD garden tractor.
Diesel Engine Compression Tester 2 Pc.
My old gasser F725 has gotten hard to start. Having to use starter fluid to get it going and wait for the smoke to clear. I have a spare engine that had good compression last tested so may be a winter project.
Found this inexpensive kit at HF that might work. At least one review said they used it on a Yanmar engine in a JD garden tractor.
Diesel Engine Compression Tester 2 Pc.
My old gasser F725 has gotten hard to start. Having to use starter fluid to get it going and wait for the smoke to clear. I have a spare engine that had good compression last tested so may be a winter project.
TractorGuy thanks for the HF link , since it has a intake heater I'll have to pull the injectors to do a compression test , also heard from thepumpguysc there are some problems with the supply pump on the injector pump , it will be a little while before I get around to doing it since it is running and I'll update this thread when I get it figured out .
