Dieselroller
New member
Truck runs fine till about 50mph. Then starts acting like it has a miss and stumbles. A code for cylinder 3 and sometimes 8 comes up. Says combustion imbalance. What is this and how do you fix it. Just had it at ps magic several months ago got new heads , head studs ,oil cooler the whole coolant system replaced.i also notice one of the bolts on the exhaust manifold looks missing when cold it idles a little ruff. Any help would be great