The 87 190e 2.3 is probably due for a timing chain and tensioner. I know the head was done by the PO.

I have searched the threads for timing chain stretch and seen some discussions regarding aligning the TDC on the crank balancer, but can anyone provide further details?

When first starting I hear a rattling that I posted about previously but amazingly seems to go away quickly when using Mobile 1 15W50 oil. This leads me to think the tensioner is going.

The other observation is pinging. With the ambient temps above 78-80 F the engine will ping. I am using 91 Octane, quality fuel. I retarded the timing slightly and it has helped, but still pings which makes me wonder if this is another symptom of chain stretch.

What does it take to change the tensioner? Anything else I should change while doing it such as ramps?

Thanks in advance for the help,

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)