It had already ingested part of the intake plate if this is the case. I would heavily pressure your dealer into "dealing" with this. By the sounds of it, you require a new long block at the least. These Yanmar engines are really reliable, but when outside influences cause failure, is when it hits the fan. (or the top of the piston then out the side in this case)T2timmy thank you for your insight. I guess I just need to convince John deere on this. Our dealer I'm not convinced has the knowledge to put 2 in 2 together. When I ordered that part I would think that they had at least of heard of this issue. Seems kinda coincidence that not even a week after replacing that it happend. Now that I think of it the tractor was running rough n that time . My wife would look at me when she heard it (coughing) is what she called it.
These motors always start a bit chokey and smokey at first cold start. That is common. But they are excellent engine and run forever. But your issue is totally related to the broken valve cover due to the air cleaner mount. No If’s And’s or But’s. Read through the very long posts on this issue. Youl see.1962lark.. would that cause it to run rough and spit and sputter. I actually thought maybe was bad gas or something
Absolutely it can. Having an imbalance of compression/airflow across the engine can cause an upset in the other cylinders. Considering we've only got 3, it doesn't take much.1962lark.. would that cause it to run rough and spit and sputter. I actually thought maybe was bad gas or something