[W126 Coupe] Engine Ticking 89 560 SEC & Harder Starting

[mramay at att.biz]

Bet I have the answer and it won't cost you a dime for the repair. 

The fan is barely touching the lower edge of the fan shroud because the
motor mounts are getting older and all you have to do is release the two
clips on the shroud, lower it a bit, and put the clips back on.

In the morning before you start the engine, rotate the fan by hand and see
if it isn't hitting the plastic shroud or is VERY close to it. It's a one
minute job to lower it, which you can do before you leave for work.

Mike R.

Original Message:
-----------------
From: Dick Spellman spell.yy at verizon.net
Date: Tue, 19 Dec 2006 14:16:29 -0500
To: mbcoupes at mbcoupes.com
Subject: Re: [W126 Coupe] Engine Ticking 89 560 SEC & Harder Starting


Hi jack:

Can you pull the spark plugs and have a look at them?  Might be you have 
one fouling out a bit from oil or fuel.  You don't mention when the 
injectors were done.  Could also be a tired hydraulic compensator that 
needs a moment or too for the typical engine oiling to quiet it down.  
What viscosity motor oil and type are you using?  Engine runs smooth at 
cold start and thereafter, right?

Regards,

Dick

and it's XKEOTS at aol.com wrote:

> Hi,

>

> I am starting to develop a more frequent ticking in my 89 560 SEC motor.

> It used to happen once every month now it is happening every other day.

> When I do my first start of the day I hear a ticking in the motor 

> until I rev it a few times or drive it to a decent rev then it goes away.

> The motor is also not starting as quickly as it was (more cranking) 

> even a month back. I even have to hold the gas pedal to the floor once 

> in a while to start it.

> The car has 171,000 on it.

> At 160,000 I had a new fuel dist, new timing chain & tensioner, plugs, 

> dist cap & rotor, idle speed switch, idle speed control actuator, 

> lambda set, all fuel filters & (oil filters, & oil 5,000 with Mobil 

> 1), timing set, new valve cover gaskets. I think a little more but I 

> cannot recall.

> Any suggestions?

>

> Thanks

> Jack

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