Glassdude
Full Access Member
Here are the symptoms. Idles rough when cold, gets worse as motor warms up. Stumlbes and misses on acceleration. I have changed the UVC harness and valve cover gaskets. Ran a CCT with AE and got code P0284 Clylinder 8 Fault/Balance. Injector buzz test was normal. Looked at PERDELS for each cyl. Cyl 3 varied between 1.2 and 2.3. Cyl 8 was between 5.9 and 7.6. Checked the Inj Control Pressure - varied between 475 - 490 at idle. Inj Control Pres volts - .78 - .90. Inj Control Duty Cycle - 9.7% - 10.16%.
I'm thinking I need a new injector. The truck has 240,000 on the clock. What else can I check other than fuel pressure which I'll get this weekend?
I'm thinking I need a new injector. The truck has 240,000 on the clock. What else can I check other than fuel pressure which I'll get this weekend?