| | Re: Having Jerk in Tata Indigo LS 2005 Diesel
Hi, this is common in most of the pump driven diesel engines which doesn't have common rails with high pressure pumps,
The issue you are facing is due to less fuel to the engine at low rpm, even how much u clean the injectors or service the pump, issue won't get fixed, these issues always comes on higher mileage cars of these kinds eg: uno,lancet ,old Indica, indigo, sieana etc.
As the pumps are driven directly by camshaft, at low rpm the old worn out pump can't make enough pressure to fuel the car , also the wear and tear of engine leads to leaving a necessity of needing more fuel, which pump can't make though, only when Roma rise u can make the engine run okay,
.only fix is source a new pump or live with it, that would be a cheap fix.
Change gears after higher rpm.
You can try tuning the pump but it won't work, dont doubt on injectors, they are fine, if not cleaned in its life time, have a try on it,