5 year, 25,5000 miles:
This was discovered in my final phase of bulletproofing my motor. An entire bank of cylinders with evidence of water, rings rusted to the wall, overheated due to coolant. EGR delete placed at 5K miles. Coolant run clean, oil changed regularly (except one 18 month/10,000 miles), all synthetic. No coolant leak in last 2 years (5 years old). Leak was traced to split where coolant filter was placed. Jody Tipton's 80 hsp econo tune. Ran the van up 10% grade and had a cylinder #3 code--that was the one that was fried in the photos below. 10 miles later the Airdog 2 motor went out. Injectors in for testing but look normal. The van did sit for 1 month in November and 10 weeks in Jan-March. No evidence of power loss prior to cylinder issue. Did have turbo underboost and fuel pump circuit high that have been running for over a year. Turbo is in mint condition except for actuator ring (large ring that controls the variable veins) had corrosion. Billet inner will be placed.
Will replace 3 or 4 cylinders, and re-finish the cylinder wall.
Mechanic is scratching head...cylinder head measures normal but could be mildly warped...in for measurements.
I have my hypotheses. What are yours?
Linear Mode
