Hi
I have a 2003 Isuzu Pickup with a 4JA1-T Engine. Top mount inter cooler.
Recently it has started hesitating randomly when driving along the road in any gear.
I have replaced the fuel filter and glow plugs upto yet with no change.
What could be the possible cause of this? If I put my foot to the floor it seems there is nothing there. If I let it creep up slowly it will get there eventually, but not like before where you could put 100% throttle and feel it pulling.
It has got worse since changing the fuel filter. Could it be linked to injectors?????
Thanks....