RedDawg
Bronze Member
I posted a few months ago about a 2012 Mahindra 5010 with 690 hours on it losing power. It starts and idles fine but if you put it under any load, including even running it down the road in 2nd gear with nothing attached, it bogs down like it is not getting fuel. That thread is here.
A synopsis is that at first I thought it was the low pressure fuel pump since it wasn't keeping the fuel bowl full. I replaced that and it didn't fix it. Then I figured out the gasket behind the fuel (Off-On-Air) selector on the fuel filter assembly was bad. It was allowing air into the system when it was only supposed to allow fuel, hence the air getting into the fuel filter bowl. You can't buy just that gasket, I made one which was pretty intricate. That didn't work. So I bought the entire fuel filter assembly (ouch) and that also didn't fix it. As part of my efforts I've had the fuel tank off and washed out, all lines are free, air filter has been replaced, the original fuel pump is back on and fuel flows back in the return line like it's supposed to when the tractor is running. You can see that here. Completely fresh fuel. There is no smoke of any kind. There is no moisture or leaking around any injector lines or connections. It will start, idle and run (while sitting the shop) at PTO speeds all day but run up the RPM's and put it under any load and it bogs down.
Before I take this to the Mahindra dealer for really expensive diagnosis and repair, what am I missing? Where else should I look? Thanks.
A synopsis is that at first I thought it was the low pressure fuel pump since it wasn't keeping the fuel bowl full. I replaced that and it didn't fix it. Then I figured out the gasket behind the fuel (Off-On-Air) selector on the fuel filter assembly was bad. It was allowing air into the system when it was only supposed to allow fuel, hence the air getting into the fuel filter bowl. You can't buy just that gasket, I made one which was pretty intricate. That didn't work. So I bought the entire fuel filter assembly (ouch) and that also didn't fix it. As part of my efforts I've had the fuel tank off and washed out, all lines are free, air filter has been replaced, the original fuel pump is back on and fuel flows back in the return line like it's supposed to when the tractor is running. You can see that here. Completely fresh fuel. There is no smoke of any kind. There is no moisture or leaking around any injector lines or connections. It will start, idle and run (while sitting the shop) at PTO speeds all day but run up the RPM's and put it under any load and it bogs down.
Before I take this to the Mahindra dealer for really expensive diagnosis and repair, what am I missing? Where else should I look? Thanks.