Ford Tech Tip: Cackling Powerstroke Injector – UnderhoodService

Ford Tech Tip: Cackling Powerstroke Injector

Some Ford diesel vehicles with the 7.3L engine may experience a misfire or "cackle." The injectors in the 7.3L diesel run off of the high-pressure engine oil pump.The #8 injector is the farthest away from the oil pump, causing a filling problem, which may result in a misfire. Ford replaced the #8 injector in some vehicles as needed with a different injector to solve the problem.

Application:
1998-2003 7.3L Diesel E Series
1999-2003 7.3L Diesel Super Duty F Series
2000-’03 7.3L Diesel Excursion

Problem:
Some vehicles may experience a misfire or “cackle.”

Cause:
The injectors in the 7.3L diesel run off of the high-pressure engine oil pump.

The #8 injector is the farthest away from the oil pump, causing a filling problem, which may result in a misfire. Ford replaced the #8 injector in some vehicles as needed with a different injector to solve the problem.

Solution:
Most vehicles use eight AB or AD type injectors, but the 7.3L Powerstroke vehicle you’re
servicing may use seven AB or AD and one AE type.

CARDONE has made the AB, AD and AE types available. Identify the type installed in your vehicle by checking the two-digit alpha code on top of the solenoid. Note that the AE type may also be labeled LL, which stands for “Long Lead.” The part number for the AB type is 2J-204, the AD type
number is 2J-205, and the AE type is 2J-209.

Courtesy of CARDONE Industries.

You May Also Like

Belts and Pulley Alignment

A misalignment of the plane of the belt can occur when a pulley is not parallel to the other pulleys on the belt drive system.

Drive Belt Alignment Alignment is key to the health of an engine belt. The belt drive system is designed to create friction between the grooves on the belt and pulley to transfer power from the crankshaft to the alternator, water pump or power steering pump. If the grooves on the belt do not align with the pulleys, the friction won’t be evenly applied and can result in wear and noise.

Diagnosing Misfires

What if there are no codes and a misfire is intermittent? This is where it gets complicated.

Lifter Deactivation

The area of contact between the lifters and cam lobes is the highest loaded surface inside an engine.

Alternator Testing For No Charge Conditions

Many alternator problems turn out to be nothing more than a bad connection at the alternator or a bad wiring harness.

Understanding Coolants

All-season coolant used inorganic acid technology and worked great for almost 30 years.

Other Posts

Hybrid Vehicle Fluid Maintenance

There are opportunities your shop can’t pass up just because the car or SUV has a hybrid badge on the back.

Ignition Coil Output

To see inductance inside the primary windings, use an amp probe placed around the positive wire for the ignition coil.

Using a Scope

Ignition coil and plug diagnostics.

Scope-diagnostics
Repairing Wiring Harnesses

A guide to probing and poking.