I am thinking about buying a 1989 Mercedes 300E. The owner says he thinks the fuel injectors need work and that the car has slow accelleration under a heavy throttle. How hard is it to fix this, and how expensive?|||I doubt the injectors themselves are the problem. They rarely go on these vehicles. This problem will require someone that is familiar with the M103 ( inline 6 engine ) to diagnose the problem first. Throwing parts at it, hoping to fix it, will be both costly and time consuming as the bogging under acceleration could be any number of things.
As recommended above. Ask to have the vehicle brought to a dealer or shop of your choice first to have the problem diagnosed ( as well as giving the car a general inspection ) as part of the purchase agreement.|||Unfortunately, older Euro makes are verrry spendy when things go wrong. Ask if you can take it to a shop for a diagnosis. If you are a AAA member, call your club for their Approved Auto Repair garage near the seller. If you can%26#039;t do that, the order of problems to address is 1. Spark plugs. 2. air filter 3. fuel filter, 4. plug wires, 5. injector cleaner. Check these items before purchasing, they may be ok. If these simple checks don%26#039;t give improvement, I%26#039;d pass, because it gets real expensive from there.
