Symptoms of Fuel Injectors That Require Cleaning and Flow Testing Service
Dirty and clogged fuel injectors will have problems like fuel leak down, abnormal spray patterns, poor fuel atomization, and / or low fuel volume. Clogged injectors can cause the following problems:
- Excessive carbon deposits and build up on the injectors, valves, and pistons.
- Failed emissions with excessive exhaust pollution. Here, replacing a failed O2
sensor will not fix the problem.
- Computer Error Codes. The computer will either read a cylinder misfire code, O2 sensor code, or an air fuel mixture problem.
- Starting Problems. The engine is difficult to start hot or cold, or will not start at all.
- Idling Problems. Rough and erratic idling.
- Pinging and Knocking. Pinging due to pre ignition or worse, knocking due to detonation. Detonation can lead to catastrophic engine damage.
- Increased Fuel Consumption. The engine may have good performance and seem to run “fine”, but it is experiencing excessive fuel consumption.
- Poor performance and a Loss of Power. The car is just not performing like it should. The vehicle may have low or high speed hesitation and surging.
- Erratic Engine Performance with poor drivability.
Leaking Fuel Injectors that do not seal completely when turned “off” can cause the following problems:
Hard Starting – Hard starting Hot or cold due to fuel leak down with loss of fuel pressure, and little or no initial starting fuel pressure.
Increased Fuel Consumption – Poor fuel economy
Oil Thinning with gas, and cylinder bore “wash down”
Excessive Carbon and Varnish Buildup on valves and on the injector itself.
O2 Sensor Damage