Hi
I own an old 300E in Lebanon, which is a bit of a project which i have rescued. When i drove it away, i noticed it ran smooth when cold, but the moment it got up to operating temp, it became v sluggish and shook upon acceleration.
So, i am in the process of looking at all the usual suspects. Have changed to date
plugs
Air filter
Fuel filter x 2
But i think the car was 'tuned' to accomodate its previous incorrect settings and is consequently running too rich (black plugs and high fuel consumption)
I am about to install an 02 sensor, which the previous owner disconnected as he couldn't be ****d to get a hole drilled out for it when he changed the exhaust. I suspect this is drastically effecting the mixture.
But here's my question. Would you change the o2 sensor THEN look at mixture adjustment. OR, could i leave the sensor and just LEAN up the fuel distributor with the infamous 3mill alan key. And if so HOW FAR down should i push before i know that the key has engaged (am very scared of pushing too far and messing it up)
Also, is it worth changing the coolant temp sensor in case this is sending wrong info to the (is it the EHA?)
Any help would be enormously appreciated.
thanks
I own an old 300E in Lebanon, which is a bit of a project which i have rescued. When i drove it away, i noticed it ran smooth when cold, but the moment it got up to operating temp, it became v sluggish and shook upon acceleration.
So, i am in the process of looking at all the usual suspects. Have changed to date
plugs
Air filter
Fuel filter x 2
But i think the car was 'tuned' to accomodate its previous incorrect settings and is consequently running too rich (black plugs and high fuel consumption)
I am about to install an 02 sensor, which the previous owner disconnected as he couldn't be ****d to get a hole drilled out for it when he changed the exhaust. I suspect this is drastically effecting the mixture.
But here's my question. Would you change the o2 sensor THEN look at mixture adjustment. OR, could i leave the sensor and just LEAN up the fuel distributor with the infamous 3mill alan key. And if so HOW FAR down should i push before i know that the key has engaged (am very scared of pushing too far and messing it up)
Also, is it worth changing the coolant temp sensor in case this is sending wrong info to the (is it the EHA?)
Any help would be enormously appreciated.
thanks