ajc8
Junior Member
I found the culprit on majority of the Hemi 5.7L tick on cold start.
It is a fuel pressure issue, and here is the procedure of determining.
At a cold start, turn on the ignition, but do not start. After hearing the fuel pump stop, turn the ignition off. Then turn it back on, do not start. Wait for the pump to stop.
Then start the truck. It should be a quiet and normal start without the ticking. If it still does, do the above 3 times, then start. If ticking does not happen with doing the above, then it is a fuel pressure issue, and not a manifold, not lifters, not an oil issue.
Mine never ticks after doing it 2 or 3 times before start.
So, I want to point to a new fuel filter, or new fuel pump, or new fuel regulator.
Try it for yourselves.
It is a fuel pressure issue, and here is the procedure of determining.
At a cold start, turn on the ignition, but do not start. After hearing the fuel pump stop, turn the ignition off. Then turn it back on, do not start. Wait for the pump to stop.
Then start the truck. It should be a quiet and normal start without the ticking. If it still does, do the above 3 times, then start. If ticking does not happen with doing the above, then it is a fuel pressure issue, and not a manifold, not lifters, not an oil issue.
Mine never ticks after doing it 2 or 3 times before start.
So, I want to point to a new fuel filter, or new fuel pump, or new fuel regulator.
Try it for yourselves.