Hesitation
 

My 1989 300ce was stored for over a year and now it has a hesitation problem. It comes and goes. Usually it happens at take off. Today,I put in some Liqui Moly Ventil Sauber (valve clean). Then I ran Liqui Moly Engine Flush and changed the oil . I used Liqui Moly MoS2 10W40 oil and afterwards removed the resistor next to the master cylinder, Mercedes part # 000 540 24 81. I'm also going to change the spark plugs and air filter next. Anyone ever experience this problem?

Has anyone ever experienced an hesitation during acceleration?

Hi Lino,

I had the problem recently. I changed the spark plugs first and the problem went away, but I went ahead did a fuel injection service also.

nd

I am going to change the spark plugs today. I am not sure which plugs to get though. I started a thread on this matter and member "Nautilus" says that on the plate in the engine bay are specified H8DC. My parts supplier says:

1. H 9DC - I think this one is Bosch Super
2. H9DC0- I think this one is the OEM

So now I am not sure which ones to buy.

Uhmm.. Yes!

Freestyler

The number in the spark plug is the heat range - a higher number is a "colder" plug. The science of changing plug heat ranges to affect performance and/or cooling is kinda voodoo... (At least my understanding is on about the same level as voodoo...)

What I do know is that the difference between one heat range (changing from 8 to 9 or 9 to 8 or ?) is minimal - you should not worry about running a 9 if it calls for an 8 (or a 10)...

-David
92 500sel
500cc Superbike (not for street use...)

Thanks for the info guys.