My big toy has been
sitting on my neighbor's land (on top of our hill) for a while
now due to engine not starting up problem. I have been busy working on the
retaining wall project so have not had time to look at it.
The weekend
before last, my friend Siao-Yeh from repair shop came visit for a barbecue
party, so we went up the hill for a look at my Mercedes. It is much easier for two persons
to check on the problem than one; one can stay in the car turning the key, while
the other one can check on the engine compartment or underneath the car (like fuel
pump). And the diagnostic we had the day was either the fuel pump or the fuel
pump relay because no fuel has been delivered and there was no operating noise
from the fuel pump. And the electric system was all fine.
So last
weekend, I went get an old relay from a nearby junk yard, and tried it on. But
strangely enough, my MB didn’t start right up with the “new” relay, and instead, it suddenly started up when I put the old relay back! Well, the best
guess I have for this situation is - the replay I got from the junk yard is not
functioning right (it has a different part number) but the original relay is a bit damaged but not totally broken yet,
and just happened to recover its function when I re-plug it back on. So well, since the engine had
started, I reckon it would be good to do a warm up run, and put some gas in
too.
During
the drive, I realized one of the left turning signal lamps must be broken. The
blinking frequency was faster than normal pace. And it was the front left one.
I happened to have a few spare light bulbs in the trunk, so I decided to change
it right away.
Now,
this is the part why I have this blog today!
Interestingly
enough, I have never change a light bulb for my MB before yet. I picked two
kinds of bulbs I have in the trunk, and also grabbed a screw driver since I was
expecting to use it; Opened the hood, and funny, I can not find any screws for
securing lamp chamber at all. The only thing I can see is a big round hand
screw knob (in below picture).
