opossum,

Probably not but it depends on what is wrong. Do you have raw fuel leaking into a cylinder? Are there loud and unusual mechanical noises? Are you experiencing very low MPG? Unusual oil consumption?

I think injector clogging is more prevelent than a lot of people realize. Most drivers in America take it easy, don't do sustained high engine speed driving. Fuel quality varies a lot and some people don't see the value in running the right octane.

The 300E will run poorly and stumble when warm and eventually also with cold starts when I have done the injector cleaning in a long while. This car has 207k miles and has never had the injectors replaced ....

How is it running now?

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)