Facing multiple issues on my 2018 Mahindra TUV300
When we stopped for breakfast by the highway, I confirmed a fuel leak from the undercarriage.
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Last month, my Jan 2018 manufactured TUV300 T8 has had issues recently with the ‘Check engine light’ coming on due to a clogged intercooler and it had to be flushed. The turbo’s hose had to be changed and the EGR valve had to be replaced. Everything seemed to be back to normal. I hadn’t driven the car on the highway since then.
But on Saturday, on the highway, a couple of things happened:
- The car was losing diesel fast, based on what I could see on the fuel level indicator on the dashboard. When we stopped for breakfast by the highway, I confirmed a fuel leak from the undercarriage. It turned out to be a crack on the main fuel hose that feeds into the fuel pump. Got that replaced by paying Rs.600 at a local mechanic’s, near the Udumalaipet toll gate on NH 44.
- The car’s rear end, right upto the rear windshield and including the rear passenger footstep & rear hatch, was coated with black soot and ash. The rear passenger footstep (that leads into the 3rd row) had an inch of deposited greyish fly-ash. My rear window was dirty to the point where my IRVM was rendered useless.
#1 has been addressed and the hose’s crack is attributed to age-related rubber hardening.
#2 is weighing heavily on my mind now. Was it because the ECU detected a lower fuel inlet pressure (due to the fuel input leak) and overcompensated by pulling in lots more fuel – and this led to a rich fuel-air mixture? This can cause excess soot in the exhaust.
#2 can also be due to a dying turbocharger, worst case (yikes!). It could be due to a clogged engine air filter (unlikely, as it was checked recently). It could be due to fuel injector issues. I just pray that the intercooler flushing/cleaning that was done last month had dislodged all the carbon from within and maybe the car was merely letting all that loose…
For now, I’ll be looking at adding Liquimoly diesel additive to the fuel tank sometime soon.
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