[R129 SL] ticking sl500

[mrthor at att.net]

It does not always make noise when cold. It comes and goes all the time. This morning I started up the car no noise. Drove it to a appointment about 1/2 an hours drive it was ticking. Then I drove it maybe 5 miles to work and no ticking when I parked it and put up the top??? 

The oil preausre is between 2 and 3. Around 2 at idle and 3 when driving.  I have put 1 small bottle of clean into the engine however I am not sure how much cleaner I should add before taking it to the next level? I was also told that I could use automatic transmition fluid to cean it???? But I have not done so. 

Thanks 

Thor

Chicago, IL



-------------- Original message from mid-co <mid-co at ix.netcom.com>: -------------- 


> Does it make the sound just 
> at a cold start ? What's your 
> oil PSI showing when it 
> "ticks" ? 
> 
> Sounds like a hydraulic lifter not pumping up , 
> or a timing chain issue. You can isolate it 
> with a short length of garden hose. Put 
> one end to your ear and the other near 
> the area of the sound , taking care not 
> to get any clothes tangled in moving 
> parts. 
> 
> I've had LOTS of internal engine issues with 
> my one owner , low miles '95 SL 500. 
> This car has been on Mobil-1 , changed at 
> 3.5 - 4-K intervals. Dealer serviced & PAMPERED. 
> 
> I'd have the OIL TUBES checked. It's hard for 
> me to believe that a car that costs 90-K would 
> have a PLASTIC tube carry the oil to the top 
> of the engine , but this one does. ( I believe 
> these were replaced "quietly" , under warranty 
> on many cars ). 
> 
> 
> More : Seems there was a timing chain issue 
> with mid-90's 5 liter engines. I believe 
> this was very year specific. Maybe another 
> member knows just what years to look 
> out for. 
> 
> The lifters also can be a problem in 
> the 5 liter motor , even at low miles. 
> 
> 
> 
> Bruce in Nashville. 
> 
> 
> 
> 
> 
> The MB Coupes Website! 
> R129 SL Mailing List 
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