Question about 2002 Chevrolet Tracker

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Timing chain broke

Starting up the car when the timing chain broke its a 2002 v-6 duel cam. what are the odds of bent valves

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  • Anonymous Mar 26, 2014

    +2,0 4cyl engine

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  • 404 Answers

Hello,Bad Luck with timing chain failure,
Sorry to bear bad news but as far as I know Gm engines are NOT safe i.e. the valve miss pistons. It sometimes isn't too severe if very low rev's i.e. tickover, usually 2 or 3 exhuaust and same inlet. Let's hope no seats.
Cheer's!
Paul 'W'
Onyer~EDson(:0)~[><

Posted on Dec 09, 2008

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I followed your video step by step setting the timing chain with no marks for the 2002 2.0ltr ford focus it still wont start


ok did you follow the ignition timing and firing order set up correctly
did you turn either the crank or cam shaft/s with out the chain
did you do a compression test to check for bent valves

Oct 25, 2016 | 2002 Ford Focus

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

2 Answers

I have 2000 ls , took eng apart and found cam chain broke. and wonder what cause it to break clean? nothing is bang up.should i place cam chain and that be it or there more to it?


Very rare that a chain breaks. I'd replace the chain and before closing it up, turn the engine by hand and see if anything is binding or frozen in the valvetrain. Also look carefully at the valve springs to make sure that no valves have bent. (if bent, most times the spring will not return to normal height)

May 16, 2011 | 2000 Lincoln LS

1 Answer

Turns over but won't fire


well the plastic piece are from the timing chain guides are either broken or ripped off,and the metal rattling was probably the timing chain,,i think the timing chain jmped or broke and broke the guides,if thats the car you most likely bent the valves in the head,,,i would remove the cam cover and the timing chain cover and see what you got,you may need a engine

Oct 19, 2009 | 1992 Saturn SL1

1 Answer

If the timing chain broke on my 02 sunfire what the odds it bent a valve?


what motor do you have?? 2.4 yes get a new motor if a 2.2 your good to fix it. hope it is a 2.2

Oct 15, 2009 | 2002 Pontiac Grand Am

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

Broke timing chain replaced it now it will not start and has no c


if you are sure the chain was installed correctly then you have bent valves, my bet is on the chain install.

Sep 07, 2009 | 1987 Chevrolet Blazer

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

1 Answer

Engine has no compression, 02 Cav


if this engine is an interference fit engine, there is a good chance that the valves are bent, if you are sure that timing is correct, this is the most likely cause for no compression in this case, did you run a compression test? if you think the valve are bent you can check by removing the rockers and look at the valves. they should all look the same, I have been able to see a bent valve due to the height of the stem compared to others in the head.

Mar 30, 2009 | 2002 Chevrolet Cavalier Coupe

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