Now I am not an expert on diesel engines but I am constantly learning. This is another opportunity, I hope.
I have Cummins, Perkins, John Deere (when they still made their own) and a Kubota diesel engines. Question/issue is with the Kubota (49Hp).
The Cummins and the Perkins all have timed relays running the glow plugs. The John Deere and the Kubota are timed by the operator.
Now this issue has existed since I got the equipment back in 2014. Not something new. The OEM told me just use whatever GP time was needed to get it to turn over.
I have always thought the Kubota had a battery that was a bit undersized by the OEM but that is what they installed so that is what fits and is in use. The battery tests good and has a full charge when this happens. If I run the GP for the recommended 10 seconds cold weather, most of the time it barely turns over 1/2 to 1 turn then the starter chatters as if it does not have adequate battery power. If I then run the GP another 10 seconds it will normally crank and start. Occasionally it still barely turns over then chatters. After the third 10 seconds the engine turns over and starts fine. Yesterday this was repeated so that I eventually had 60 seconds on the GP. Yes I know that is a lot.
Other than burning out the GP what is the issue with excessive use?
Assuming it is not the battery and if it was why would it be fine after multiple attempts to turn over and multiple GP drains?
I know the heating from the GP warms the cylinder and makes the engine easier to start. Does the heating effect of the GP in any way change the resistance of the engine in the power required to turn it over? I almost now think that is what is going on. With 10 seconds the battery does not have the required CCA to turn it over but with the heated air somehow reduces the torque required to turn the engine over. Are the GP's possibly a problem? Just seems odd that the more time the GP are on the easier it is to crank the engine. I thought it made it easier to start not crank.
I have Cummins, Perkins, John Deere (when they still made their own) and a Kubota diesel engines. Question/issue is with the Kubota (49Hp).
The Cummins and the Perkins all have timed relays running the glow plugs. The John Deere and the Kubota are timed by the operator.
Now this issue has existed since I got the equipment back in 2014. Not something new. The OEM told me just use whatever GP time was needed to get it to turn over.
I have always thought the Kubota had a battery that was a bit undersized by the OEM but that is what they installed so that is what fits and is in use. The battery tests good and has a full charge when this happens. If I run the GP for the recommended 10 seconds cold weather, most of the time it barely turns over 1/2 to 1 turn then the starter chatters as if it does not have adequate battery power. If I then run the GP another 10 seconds it will normally crank and start. Occasionally it still barely turns over then chatters. After the third 10 seconds the engine turns over and starts fine. Yesterday this was repeated so that I eventually had 60 seconds on the GP. Yes I know that is a lot.
Other than burning out the GP what is the issue with excessive use?
Assuming it is not the battery and if it was why would it be fine after multiple attempts to turn over and multiple GP drains?
I know the heating from the GP warms the cylinder and makes the engine easier to start. Does the heating effect of the GP in any way change the resistance of the engine in the power required to turn it over? I almost now think that is what is going on. With 10 seconds the battery does not have the required CCA to turn it over but with the heated air somehow reduces the torque required to turn the engine over. Are the GP's possibly a problem? Just seems odd that the more time the GP are on the easier it is to crank the engine. I thought it made it easier to start not crank.