| We
get asked daily on what you can change that might
prevent catastrophic engine failure or what causes
this. Our experience has enabled us to come up with
a general list to the most frequently asked questions
concerning Mercedes Benz engines and engine parts. |
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| Mercedes
Engine Noises |
| Mercedes
Timing Chain And Mercedes Timing Chain Tensioner |
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We
can not stress enough the importance of changing
the Mercedes timing chain, Mercedes timing chain
tensioner and Mercedes timing chain guide rails
every 100,000 miles. Failure of any of these components
will, not might, cause considerable damage. It is
our opinion that this is inexpensive maintenance
to get you through the next 100,000 miles.
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| If
you start your engine, after it sits all night, and
you hear clatter which quickly subsides when you get
oil pressure you probably are on borrowed time. Change
the timing chain tensioner pronto regardless of how
many miles on the engine. |
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The
typical Mercedes timing chain tensioner applies
tension to the chain via hydraulic pressure.
The tensioner is supposed to hold this pressure
after shut down. The noise you are hearing,
on start up, is probably not lifters but the
chain and the tensioner doing some wild gyrations
behind the timing chain cover waiting for
oil pressure to come to their aid. While those
wild gyrations are occurring the plastic guides
are taking a beating and will break and so
on and so on. The end result is the valve
timing becomes so adversely affected to the
point where a piston hits a valve and now
you have a real expensive mess.
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| The
good news is that the Mercedes tensioners on most
of the Mercedes engines are not difficult to change.
They simply bolt right into the passenger side of
the timing cover and timing cover removal is not necessary.
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| Valve
Tapping |
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Lifter,
hydraulic compensator, noise is not that common. Usually
the cause of valve tapping is due to a worn rocker
or camshaft. Remove the valve cover and inspect each
cam lobe and rocker for scoring and wear. If you find
a worn lobe on your Mercedes camshaft the camshaft
and rocker arms will need to be replaced. This not
that difficult of a job on most Mercedes Benz engines
since they are overhead cams. Consult your service
manual.
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| On
V8 engines the right hand camshaft is usually the
first to go. If you are hearing a valve tap on the
right side of the engine it is usually due to a worn
camshaft. |
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| We
see many people just change the right camshaft and
wait for the left to follow, that is your call. The
labor is not redundant except for the oil change.
Some Mercedes engine parts to consider replacing are
your Mercedes camshaft or camshafts, rockers, valve
cover gasket or gaskets, camshaft oiler kit or kits
and of course your oil filter. |
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| If
you need Mercedes engine parts just search our Mercedes
parts online catalog or call us toll-free at 1-888-628-3247 |
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