Like it says; 91 350sd, 603 engine. Hold on a minute before you start bashing the 603 and referring to it as the rod bender!
This has been a good engine. Just recently i've developed a slight hesitation when your cruising and then coasting to slow down, as you gently start to accelerate I can feel a slight hesitation; like when the fuel filters need changed; but I already changed them. No vac. lines off.
I'm coming due for the timing chain replacement and I'm asking the experts if this could possibly be an indication of chain stretchage affecting the timing as the throttle is advanced.
thanks in advance for any good advice.