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Need to reset timing

S

skyofavalon

Senior member
just changed my timing belt and water pump on my 2002 Daewoo Lanos, 1.6L DOHC. The valves are knocking.The belt was changed before it went so I fucked up the timing,thought I had it marked right ,but I guess not.

Anyone know the easiest way to reset the timing properly.I am dead set on seeing this job through to the end,I went through hell and back with this timing belt job.Any input is appreciated.My dad seems to think we can get it,but the more info the better.
 
The valves are knocking, as in hitting the piston? Is it an interference engine? Having the timing belt off by even one tooth off on an interference engine can spell doom...
 
interference engine ? I dont know,i'm not very auto savy, but being off by one tooth doesnt leave much margin for error.It makes a slight tapping noise .I havnt drove it around yet just started it up briefly

I may just have to take it to someone to change the timing before I damage something
 
Interference engines have valves and pistons that share the same space, just not at the same time. If the timing belt is off or breaks, the valves and pistons meet each other and things break.
 
First thing to do would be to not start the engine again...

Take off the timing cover and verify that the pulley marks are still lined up the way they should be.

If the marks aren't lined up then there is your problem. You'll need to take off the belt, reposition and try again. After installing a timing belt you will want to turn the engine over by hand 3-5 times. Use a big ratchet/wrench/breaker bar to turn it in the direction of rotation (Removing the spark plugs will make this much easier). After turning the engine over a few times double check to make sure that the timing marks are all lined up. Turning the engine over by hand will also allow you to ensure that the pistons aren't hitting the valves.
 
Originally posted by: skyofavalon

I may just have to take it to someone to change the timing before I damage something
Click to expand...

/thread

If you didn't understand what you were doing or could possibly do when you dove into changing a timing belt you shouldn't have done it.

 
Get a shop manual for your car / engine and follow the steps for
timing belt replacement exactly. On some cars, you need a tool
to hold the camshaft in place while you align and install the timing
belt. And as already said, you may have done damage to the engine
by starting it out of time.
 
Originally posted by: iamwiz82
The valves are knocking, as in hitting the piston? Is it an interference engine? Having the timing belt off by even one tooth off on an interference engine can spell doom...
Click to expand...

I didn't think that most cams were that aggressive.

But yeah, it's bad ju-ju either way.
 
If you don't know what an interference engine is or if you have one, then you shouldn't be changing your timing belt.
 
Originally posted by: jagec
Originally posted by: iamwiz82
The valves are knocking, as in hitting the piston? Is it an interference engine? Having the timing belt off by even one tooth off on an interference engine can spell doom...
Click to expand...

I didn't think that most cams were that aggressive.

But yeah, it's bad ju-ju either way.
Click to expand...

Aggressive cams with too much lift can cause this affect when properly timed.
 
DO NOT START OR DRIVE THE CAR!@!@


yes this is a interference engine. If you got the belt wrong then yes you can damage the engine. Have it towed to a shop and have them reinstall the timing belt. After they do that they can do a compression check to make sure the valves are ok. If they are then drive away. If not then the head will need to be removed and repaired.
 
Originally posted by: skyofavalon
interference engine ? I dont know,i'm not very auto savy, but being off by one tooth doesnt leave much margin for error.It makes a slight tapping noise .I havnt drove it around yet just started it up briefly

I may just have to take it to someone to change the timing before I damage something
Click to expand...

Chances are that the lifter/cam followers bled down.....if its just a slight tapping noise, and your relatively sure the belt it on correctly, let it idle for a few minutes and the noise will most likely go away.
 
Problem solved.I actually did it right in the first place. What happened was there is a pin that the Cam shaft gear sets into to hold it in place,well it broke off.I replaced the pin,set the timing marks up like I did before,and now runs perfect.I changed the Timing belt,water pump,Alternator belt,and A/C belt.

It was a pain in the ass this first time through,but when it comes time to do it again, if I start early on a Saturday I can have it done before noon.Plus I saved a ton of money which is always a good thing.

Thanks for the replies.
 
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