kskane

Hi Guys, first up thank you for reading it and hope you don't jump to next topic since this is about Fuel Injector Cleaner Additives. I know this is a well discussed topic in different forums and I would like to know is it going to help my particular problem at all and/or has Fuel Injector Additive got any drawbacks.

I have a 2004 525i M54 with Auto trans. Recently over the past months, the car has done rough idle when stationary about four times. Once you push the pedal and car is running, the rough idle has gone. I have checked and verified the MAF Sensor appears clean, Disa Valve is good and functional with its O-ring showing wear as normal at 145K's, I have put new spark plugs and engine mounts seems okay.

Everything so far is pointing to Fuel Injectors to be bad. I really do not want to change the Fuel Injector unless that is the last option. So I searched the forums for Fuel Injector cleaning additive. There are mixed opinions on using and not using Fuel Injector Cleaners. Following seems to be the most likely Fuel Injector Cleaners people have used and recommended.

1. Chevron Techron
2. Redline SI-1
3. BG 44K
4. STP (something)
5. Pro-Guard Fuel Injector Cleaner

I called my local dealer here in Australia. and according to the parts specialist BMW does not sell any Fuel Injector Cleaner Additive solution. Although, most or some of the people in US have posted that the BMW dealers tried to rip them off by Fuel Injector cleaning service for about US$180-275.

Another important point that I am concerned is, that my E60 the fuel filter is inside the petrol tank. So I would like everybody's opinion (who wants to share) - is adding Fuel Injector Cleaning Additive has any drawback to the Fuel Filter or the Injectors on the 2004 E60 ( I know the later E60 has a bad batch of injectors, not mine).

Also, if the answer is yes to use the Fuel Injectors, then which one out of the above list have you used ?

Thanks for your contributions.

Margal

I am using chevron techron fuel system and injector cleaner every 3 full tanks alternating them. I am really do not know if it is helping or not but I heared all good things about chevron techron. BMW sells fuel system cleaner same as chevron techron. I do not think that it will fix the bad injectors but you have to try and see. I do not know in Australia but here in US I send my injectors for cleaning and they came back like new with all new orings. Cost me $27 per injector. You may search and there might be someone who does same service

luigi524td

It's possible that a high mileage engine has, if consuming a diet of "average" quality gasoline, become carboned up. Unfortunately a few bottles of gasoline additives won't fix that. There is a lot of talk about a service to clean-up the heads that some dealers promote that can be done without removing the heads. But, I've owned and driven my BMW < 200K miles without experiencing the problem so I can't personally relate to a "fix". BTW, even though I have usually bought "tier 1" gasoline I have also used Chevron Techron 1-2 times a year in each of my cars. Bought at area autoparts stores whenever on sale ($4-$5 a bottle) seemed like a reasonable investment even thought I'm no longer driving 50K - 70K miles a year.

seahawk

Hi Margal,

Can you tell me where you send in to clean your injectors ?

Thank You
seahawk
Long island
06 550i

Margal

RC Fuel Injection
They are fast and the injectors come back clean

seahawk

Thank you, I thought you had send it to somewhere local here in Long Island.

seahawk