Question about 1995 Mercedes-Benz C-Class

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Hi there, we broke the timing chain on a c220 while driving - will some valves definately have bent over in the process?

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Yes new heads are in order sorry

Posted on Sep 07, 2009

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YEP.IT DEPENDS ON WHERE PISTONS ARE.WHEN CHAIN BROKE.BY LUCK I HAD A 4 CYLINDER ENGINE.MY TIMING BELT BROKE.LUCKLY ALL MY PISTONS WAS MIDWAYS IN THE CYLINDER BORE.OUT A NEW TIMING BELT.IT CRANKED RIGHT UP NO DAMAGES.I WAS PREPARE TO SPEND MONEY ON ANOTHER ENGINE BY GODS WILL NO DAMAGE DONE.NOW YOU MIGHT BE LUCKY ALSO.REPLACE THE TIMING CHAIN SEE IF IT CRANKS.IF NOT.REBUILD OR BUY ANOTHER ENGINE.

Posted on Sep 07, 2009

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In most engines, the tops of the pistons are machined in such a way that the valves can not ever touch the pistons, no matter what. If you have bent valves, it's from excessive heat and torque.

Posted on Sep 08, 2009

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2 Answers

I was driving my Nissan Maxima engine made a weird noise engine shut off wont start timing cover broke what to do now


That doesn't sound good. Sounds like your timing chain broke, which almost certainly means you have valve damage too, as at least one set of valves would be down when the chain broke and the piston will have made contact.

Some Maxima have belts, but the fact it broke the cover, leads me to believe your is chain driven camshaft.

It is a big job best left to a garage.

https://ca.answers.yahoo.com/question/index?qid=20110315121415AA0ZBXX
https://ca.answers.yahoo.com/question/index?qid=20110315121415AA0ZBXX

Feb 09, 2016 | Nissan Cars & Trucks

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Timing chain broke on Rocam engine will it bend my valves


If the engine has a bore and stroke that are equal to each other is a square engine. An engine with a smaller bore than the engines stroke is undersquare. Engines with a larger bore then stroke are oversquare. If your engine is square the valves will be ok.

Sep 23, 2014 | Cars & Trucks

1 Answer

Was driving down road and car started making a funny noise like a belt broke so I pulled over and car cut off and now will not start but dose turn over


If the timing chain broke; your cylinders will not hold pressure because the valves letting air in to your cylinders would be bent. Have the cylinders checked for holding pressure. If your timing chain broke; you will need another engine used or new.

Mar 17, 2014 | Saturn L-Series Cars & Trucks

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Does a broken timing belt automatically mean bent vales?


No you don't always bend valves typically with 4 or 6 cylinder engines are equiped with free floating engines that when the chains or belts break it allows the engine from creating greater damage to other parts of your engine

Nov 12, 2013 | 1995 Honda Accord

1 Answer

Timing chain


bent push rods could have been caused when the chain broke and not from the chain been replaced wrong or the timing out.

if the engine was running when the chain broke the cam would have stopped leaving all the valves in the same positon as the mometum of the fly wheel continued to turn the pistons in the cylendars could hav come up and hitting the valves and bending the push rods. and or damaging the cylendar head.

recommend removing the head and have it checked for damage, as well as replacing the bent push rods, and cylendar gaskit. once the head is checked and the valves are seated well. then replace and follow instructions in the set up for the pistons and cam prior to replacing the chain and setting the timing.

I hope this was helpful.

Oct 20, 2012 | 1991 GMC C3500

1 Answer

Timing Belt broke at red light what other issues should I be concerned about for a timing belt change


The one main issue after a timing chain failure is to make sure that you don't have any bent valves. If after you replace your timing chain, you notice the car stumbling, misfiring or any sort of condition that it didn't do prior to the chain breaking, then the valves are most likely bent.

Jul 05, 2011 | Chrysler PT Cruiser Cars & Trucks

2 Answers

Timing chain broke replaced it now car runs rough. rechecked timing


Put a vacuum gauge on the intake manifold. (any port)...If the needle is bouncing, likely you have a bent valve. Some engines are "interference" but even those that aren't can still have a valve/piston collision if the chain (usually the top gear) fails. Also check firing order etc.

May 20, 2011 | 1994 Chevrolet Cavalier

4 Answers

The timing chain,cam gear and crank gear has all been replaced.the timing has been set and still the truck will not turn over,backfires once and does the same hollow noise.is this is a freewheeling engine...


It definately sounds as though you've got your cam gear set 180 degrees off.When your timing is at top dead center your crankshaft will be at TDC on the guage, the cam gear will have both of the lobes at 10:00 and 2:00 away from the surface of the valve they serve on the number one cylinder. This can only be see if the valve cover is removed, which at this point I'm sure it is. Thank you, Dana

Oct 06, 2009 | 1997 Chevrolet S-10 Pickup

2 Answers

Danger of bent valve and difficulty of replacement with broken timing chain


dealing with timing chains its harder then timing belts i mean if you have the right tools it can be done but it can be pretty difficult when dealing with the timing , and the chance of a bent valves it depends if you have a 2.0L DOHC there is definatelly a pretty good chance that u might have valve or piston damage, if you have 2.0 SOHC u wont have damage at all

May 28, 2009 | 1998 Mitsubishi Eclipse

2 Answers

Chrank but no spark


If the chain broke at highway speed then you have probably bent valves too. Does the motor spin fast? If it sounds different cranking then it may have bent valves. You can do a compression test to find out for sure. Good Luck

May 15, 2009 | 1990 Pontiac Trans Sport

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