Introduction
Old fuel, sulfur rich petrol and carbon make a residue that builds up inside the fuel injectors and clogs them, causing uneven quantity between separate cylinders, inferior spray pattern, poor atomization or leaking fuel when no current is passing through the injector coil. Diagnosing a faulty injector is not an easy task, because its symptoms may be the same as a bad coil/cable or a bad spark plug. There are a lot of DIYs on the web on how to clean your injectors using carburetor or brake cleaners and compressed air, fuel additives, etc. but the only and most effective way to deal with that issue is to have your injectors bench tested and professionally cleaned.
Here is where we step in.
Symptoms
Starting issues, uneven power delivery, rough idle, increased fuel consumption, poor emissions, mediocre engine performance, surging and stumbling under partial throttle loads, random engine knocks and detonations are clear signs that your injectors may need servicing. Leaking injectors are the worse since they can have all the symptoms listed above plus some fuel odor inside of the car and around the engine bay.
How we do it ?
We usually receive old and dirty injectors. Some of them have bad o-rings, cracked spacers, broken caps or even ripped/clogged microfilters.
We provide comparison data (before-after) for every set of injectors, that’s why our first job is to mark and test them as they arrive.
In some cases before the cleaning procedure injectors show poor spray pattern, with weak or no atomization, or even have leaks all over the place.
We simulate different engine rpm and loads and putting the injectors into 9 different test modes:
– Idling rpm test
– Idling spray volume test
– Accelerating test
– Shifting speed test
– Medium speed test
– Medium spray volume test
– High speed test
– High speed spray volume test
– Leak test at high pressure and no actuation
We’re disassembling injectors by removing all the o-rings, spacers, caps and microfilters and thoroughly examine for any mechanical damage, preparing them for the ultrasonic cleaning – inside and outside .
Brand new rubber and plastic components are installed and injectors are going through the same 9 tests again.
After we make sure your set is within specification, we package the injectors carefully, attaching the test results data and they are ready to be sent right back to you.
We also are returning all the old stuff we’ve replaced – o-rings, pintle caps, microfilters.
Placing an order.
If you want to do the job by yourself we could supply complete injector repair kit.
Otherwise all you need to do is to remove the injectors from the engine, place your order for servicing and send them to our address.
The procedure takes one day. Your set will be headed back to you in no time.
Please note that sending more than one set can get you up to 20% discount ( spread the word among your local bmw buddies. ).
Price for a set* includes :
– Bench testing on the arrival (used for before-after comparison data)
– Outside ultrasonic cleaning ( degreasing and removing the dirt on the injector housing )
– Inside ultrasonic cleaning ( using CYCLO’s fuel injector cleaning agent and electrical pulse)
– Reverse flush ( if necessary, applies to super clogged injectors )
– Bench testing simulating 9 different tests. (used for before-after comparison data)
– Brand new microfilters
– Brand new o-rings
– Brand new pintle caps and washers.
– Return shipping fees.
*A set is considered to be a batch of injectors up to 8 pcs.
Injectors of a 4, 6 or 8 cylinder engines will count as one set.
2 sets of 4 cylinder engine injectors will count as one set
Injectors of a 10 or 12 cylinder engines will count as two sets.
2 sets of m30 injectors (12) and a set of m10 injectors (4) will count as two sets aswell etc.