Tech Tip: Coil-On-Plug Misfire Diagnostic Tips For Ford/Lincoln/Mercury Engines
The misfiring cylinder must be identified through Self-Test misfire codes or through WDS Power Balance. Rule out base engine problems; rule out fuel problems; and then look at
ignition problems (be sure to rule out coil primary circuit issues).
Cylinder Head Oil Leak Or Weepage Found On Some 4.6L And 5.4L Engines
Some vehicles equipped with the Romeo 4.6L 2V engine or 5.4L 2V Windsor and 5.4L Supercharged engine may exhibit an oil leak or oil weepage from the cylinder head gasket at the right-hand rear or the left-hand front of the engine.
GM Tech Tip: Crankshaft Rear Main Oil Seal Leaks in Some 60-degree V6 GM Engines
Some GM owners may complain about external oil leaks from these engines. Before replacing the new design rear main oil seal, be sure the PCV system is operating correctly.
Tech Tip: Oil Leak Repair for 1990-’93 4.0L Ford V6 Engines
The 4.0L Ford V6 has been a problem engine for oil leaks for years. This engine has been used in the Aerostar, Explorer and Ranger pickups. The most common oil leak on 1990-’93 4.0L engines is often diagnosed as a rear seal leak, but in most cases, the problem is usually found to be the rear of the oil pan gasket.
Tech Tip: Stuck Oil Pressure Relief Valve on 2001-’02 Chrysler 3.3L and 3.8L Engines
There have been reported incidents of stuck oil pressure relief valve assemblies in the chain case cover. With a stuck oil pressure relief valve, the oil pressure is not regulated as it is supposed to be, resulting in possible low oil pressure and engine damage due to oil starvation.
Wrong Oil Filter Results in $3,200 in Damage to Engine
A car owner in Memphis, TN, decided to have her oil changed while she was at a local car wash. Unfortunately, the wrong oil filter was installed resulting in her being stranded in the middle of the road when the engine shut down. The repair bill to have the engine replaced was more than $3,000.
Tech Tip: What is Acceptable Oil Consumption in Diesel Engines?
There’s no simple answer to that question. Many factors can contribute to oil consumption, and correctly diagnosing if there is a problem and what’s causing it can save you a lot of money and down time. All engines will consume some amount of oil, and as an engine ages and wears we generally accept increases in consumption, but in low mileage or low hour engines oil consumption can be frustrating.
Tech Tip: Oil Leak by Crankshaft Seal on Porsche Boxter Engines
Engine oil leaks in area of crankshaft sealing ring on flywheel side may be coming from the crankcase and intermediate-shaft flange bolts.
Tech Tip: Honda’s V6 Engine Leaks Oil from Front/Middle/Rear
If oil is leaking from the front, middle or rear of one of the above engines, it may be due to the cast aluminum engine block may be porous in spots. Depending on the location of the leak, seal it with JB Weld or 3-Bond-coated sealing bolts.
Shell Ecobox Efficiently Delivers Oil to Engines; Significantly Reduces Plastic Waste
Recently at the Michelin Challenge Bibendum 2010, Shell Lubricants announced that it offers an innovative product called Ecobox, an alternative to traditional plastic packaging for motor oil.