Fuel Injection Cleaning

use lucas upper cylinder lubricant with injection cleaner and fuel conditioner works great use it every time i fuel up in boat,diesel pick up and 328,also starbrite has a great cleaner conditioner called startron good for ethanol fuel phase seperation headaches either one is great

 

by the way you can get startron at west marine

 

Hi, I just replaced the injectors on my Mondy QV. They were inexpensive and simple to change. Noticeable performance improvement. Good Luck

 

+1, I did that last year too. If the injectors are the originals, it's time to just replace them, if they are the newer brass versions, then just cleaning them would be in order. (a bottle of Techron injector cleaner might be enough to clean them)

 

They are 380/500 mercedes injectors. Any Bosch distributor will have them. I would reccomend Mike at IPCO 770-381-1114.

Larry

 

The best price I have seen was at http://www.autohausaz.com. The are located in Phoenix AZ.

 

Here are the part numbers for the injectors and the rubber donuts:

http://www.ferrarichat.com/forum/showthread.php?t=161225&highlight=308+injectors

Absolutely replace them if they are the old steel ones.

Shop around the Net with the Bosch part numbers for the best deal.

 

Yes Autohaus AZ is another good one. They have been one of my distributors for several years, good honest people.

Larry

 

There are companies that do just cleaning, testing and calibrating injectors. As expensive as most injectors are it is worth sending them off to be professionally cleaned. if I locate that one company that I saw in GRM I will pass it on.

 

Not in the instance of a 1980's vintage 308/328/Mondial or Testrarossa. At that time, Bosch made the injectors from steel, and with age, have many problems with rust and spray pattern problems. Since new ones (when purchased online) are only around $30 each, it is better to just replace them with the updated brass versions, which solve the problem once and for all.

 

Hate to be a parrot but Dave Helms- a well respected mechanic cleaned my stainless injectors and showed me the much improved spray pattern. He stated the brass injectors are "junk" and simply to clean the SS ones.

 

Ok, here we go.........

I know I'm going to probably going to want to shoot myself for asking this......

Brass vs. SS.

What are the Pro's and Con's of each?

 

Should probably be Brass vs. Steel. I'm pretty sure the non-brass are not Stainless Steel although the bits inside of both are likely steel or stainless steel.

I'd also like to know why the brass may be considered inferior (after I just got done installing all brass ones on my car.

Certainly they look prettier

Weapons loaded?


Well,

 

I'm also wondering... I haven't tried to study the design of these injectors, but if the fuel "orifice" (if that's the correct term) is also brass in newer ones, it would seem the brass would erode much faster than steel ones. But perhaps steel corrosion is a tradeoff you pay for lower erosion. I'd like to hear from Dave Helms or others who have seen, inspected, and changed many of these. Thanks.
Rick

 

There is a "sticky" in the 308/Mondial section.

 

+1, I would like to hear from the master as well!

 

regarding the need to change fuel injectors on the 3x8's.
what are the common symptoms which might lead one to make the change?
is it an obvious change in engine behavior or something more subtle or simply
a consequence of age and the logical preventative maintenance?

 

It would apply to any fuel injector on any car but..... if it leaks/drips when the engine is shut off that could cause flooding, black smoke on start-up, running rich maybe leading to overheating cat(s). Full blockage or serious partial blockage would lead to lean running in that cylinder which would cause other problems and both could be felt as the engine being down on power and smoothness.

More likely is probably deterioration with age due to wear and build-up of tiny crud at the nozzle which can cause a poor spray pattern. This would result in less than ideal atomization of the fuel and would no doubt be pretty subtle and hard to pin down. You would really have to pull the injectors and check the spray pattern and flow rate.