replaced timing belt and will not start

babycar · Post by **babycar** » Tue Feb 20, 2007 10:43 pm

hello!
so i have another timing belt question, so the serpentine belt failed and a little piece worked it way onto the crankshaft where the timing belt goes and cause it to slip. i replaced the both belts, to be safe and now the car will not start, it just cranks, but will not fire. have gas at the fuel rail, there is a spark at the plug. will a car with a bent valve still start? what are some other things what could have gone wrong? thanks for all the help in advance. oh the car has 1.6 liter engine in the aveo.

MMamdouh · Post by **MMamdouh** » Tue Feb 20, 2007 10:50 pm

bent valve ---> no compression ---> engine failure.

MMamdouh

Audacity Racing · Post by **Audacity Racing** » Wed Feb 21, 2007 12:28 am

Even with a bent valve it would sputter and spark. Were you sure to re-connect the cam position sensor and the crank position sensor?

Spider · Post by **Spider** » Wed Feb 21, 2007 2:59 am

Sorry to say but engine damage did occur if the timing belt broke.

As stated above, the valves interface with the pistons if the timing belt breaks or a tooth or two come off it.

Your engine may be refusing to start because it is trying to keep you from doing more damage to it.

Many good posts in this forum with timing belt information, here is just one.

http://www.daewootech.com/forum/viewtopic.php?t=8378

keep us posted, you can get lots of help and encouragement in this forum

babycar · Post by **babycar** » Thu Feb 22, 2007 6:45 pm

thanks for the help guys,
so from reading other post i understand it is less expensive to buy a used engine than repair the damaged one?
know where i can find one?

i did reconnect all the sensors, now i am going to have to pull the valve cover. i guess i was hoping for some quick fix, anyhow thanks.

Post by **PrecisionBoost** » Thu Feb 22, 2007 10:27 pm

Spider wrote:Sorry to say but engine damage did occur if the timing belt broke.

You missed the original post..... the timing belt did not break.... it slipped.

Odds are that two of the cylinders would have bent valves but if it just "slipped" I would guess that the other two cylinders are ok.

So I agree with Audacity..... it should sputter.

Even with bent valves the spark should still ignite the fuel in the cylinder.... it's just that the flame front/ pressure would come out the exhaust or out the intake....creating mild backfire sounds.

If it's completely dead, perhaps you have something else going on.

I would suggest removing all the spark plugs and rotate the engine (via crankshaft bolt and ratchet wrench ) to see if it's free wheeling.

If you find a point where there is resitance... don't try to turn it past.... odds are your problems might be bigger than you think (such as a valve protruding through a piston )

Like Audacity said.... check that all your connectors are plugged in and make sure you didn't mix up the spark plug wires.

eurotech · Post by **eurotech** » Sat Feb 24, 2007 6:05 am

you can do a test compression... before you`ll open the engine.