Fuel injector failures

[southbay]

fuel injector failure

Speaking of which, many of our cars are not driven year round. So, fuel does sit in the injectors for longer periods of time as opposed to a daily driver. Do you think cars like ours need more REAL injector cleaning? Not the snake oil in a can but real cleaning on a bench? When you don't run fuel thru them on a daily basis, does more varnishing take place when the fuel can sit in one spot for days or weeks?

Personally, whenever there is an suspected injector problem, I advise people to take the injectors out an have them checked and balanced. On my diesels, I do them as PM every 100K. Not sure if what to do about injectors for gas injectors that sit like ours do sometimes.

Gas fuel injector maintanance is recommended every 50,000 miles. There are cleaners that are used, but they will only clean the inside of the injector, it will not take care of the carbon buildup at the tip besides there is no way of knowing the true effect without visually seeing the before and after. That is the beauty of what companies such as SouthBay fuel injectors, Witchunter, RC do. We get to see the results... before and after. When we clean our injectors they are degreased, placed into 2 different ultrasonic tanks, old parts removed, we check resistance, spray pattern, flow rate, leak down test at 60psi, and we reverse/ back flush with high pressure, we provide a before and after flow sheet. When we send your injectors back to you, they are as close to new as you can get.
Anyway, that's my take on fuel injector cleaner in a can vs full reconditioning on a bench.

 

[aklim]

besides there is no way of knowing the true effect without visually seeing the before and after. That is the beauty of what companies such as SouthBay fuel injectors, Witchunter, RC do. We get to see the results... before and after. When we clean our injectors they are degreased, placed into 2 different ultrasonic tanks, old parts removed, we check resistance, spray pattern, flow rate, leak down test at 60psi, and we reverse/ back flush with high pressure, we provide a before and after flow sheet. When we send your injectors back to you, they are as close to new as you can get..

I have always compared cleaners in a bottle to sweeping a room in the dark. Sure, you might get some crud off the floor but you are never really sure that you got everything or even how much. Best you can do is a make a SWAG on the cleanliness of the injectors. We won't even talk about getting them balanced to each other when it comes to cleaner in a can.

The only way I can see the cleaner in a can work is if you do it faithfully at every oil change so you are relatively sure that there is no build up. At which time, you probably spent more money than having someone do it at say every 50K.

Also, I am not sure but someone told me that the cleaners are usually gunpowder solvent that might strip off some of the coatings of the injectors. That is from a mechanic not an injector shop so I don't know the validity. Either way, I'd rather do it once ever 50K and KNOW it is right as opposed to dumping that stuff in and HOPING it might be ok.