JeffEzack

I have 2 6.0 engines apart right now, 1 is to repair blown head gaskets (customers concern was that coolant is blowing out of the resovoir). Head gaskets blown between #3#5 and #4#6. Inspected heads for warpage had .004" in the same areas of where the gaskets had blown. The second engine has external oil leaks from the right side headgasket. Removed the head and again checked for cylinder head flatness, same clearance issue, same area. Ordered 4 heads, 2 heads came in on Fri. I checked them for flatness and had .004" clearance in the same area on both new heads. Went to a machine shop thinking my bar was off but their bar showed the same measurements. Hotline instructed me to wait for the other set of heads to come in and check them, they came in today with the same clearance issues!! Hotline is stumped, later in the afternoon International phoned and asked that when the heads are sent back, to address them to certain people for inspection. Has anyone had any similar problems. I hope they don't have a bad batch of heads (there are sure a great deal of blowing coolant out of the resovoir concerns). These customers have been both truckless for about a month.

Well I tried the IDM and it seemed to cure the problem until the engine achieved operating temperature. If the truck is at idle in Park or Drive it feels like a small miss and has about 4% on #8 cylinder delta pid. If I raise the engine rpm off idle or cruise all cylinders stay at 0% and the engine runs smooth. Performed oil Areation test - Passed, (changed it anyway), fuel pressure is 60 P.S.I, truck has 26,000 Km and is well maintained, checked to see if there was a later PCM update but it has the latest PCM update.

I am working on a 2003 F-250 with a 7.3 in it. It is running rough, performed contribution test, flagged injector #8. Replaced #8, still running rough, performed engine basics (compression test, etc, even removed valve cover and observed valve train operation, operating normally). Has anyone had a concern of this nature and if so what was the fix? any help would be appreciated.