Compression Release

SykotikDisaster · Post by **SykotikDisaster** » Sun Jan 27, 2008 11:17 pm

Hi, not quite sure how to phrase this, but...My uncle is fixing my 2000 Daewoo Lanos (no engine upgrades or anything). Well, the timing belt went out and he is replacing it. Well, he thinks that there may be a compression problem and is wondering if there is a compression release valve. Any help would be appreciated. We are hoping that we don't have to replace the head or the engine due to any stuck or bent pistons.

Post by **PrecisionBoost** » Mon Jan 28, 2008 12:01 am

If your engine is a 1.6L DOHC and the timing belt broke then odds are you have a damaged valve or two..... so your Lanos won't run until you replace the cylinder head or have it rebuilt.

I don't want to put you down or anything but the only "compression release valve" is the exhaust valve.

Sorry for the bad news, let us know where your at in the USA and perhaps you might be able to find someone on here with a decent cylinder head.... or know where to get one.

Spider · Post by **Spider** » Mon Jan 28, 2008 3:24 am

I agree with PrecisionBoost. 99% chance the engine has bent valves.
And I would like to add this:
When you replace the timing belt you should also replace the water-pump and the tensioner pulley as well.
If the old water-pump freezes up? Your new t-belt will suffer and you will be back to doing the whole job all over again.
Even if your an excellent mechanic but never worked on a Daewoo before ? A factory service manual is highly recommended for procedures and spec's.

good luck

SykotikDisaster · Post by **SykotikDisaster** » Mon Jan 28, 2008 6:30 am

Thanks to both of you. We kinda assumed that it was the valves, but were hoping for a different answer.

i am located in california, and we are looking for a service manual as well. we did use the timing belt instructions from here to fix it, and did also change out the water pump and pulley.

i am unsure of the costs of buying a new/rebuilt cylinder head would run me, but if anyone has a guesstimate, that would be greatly appreciated!

Thank you both for your quick responses!

PS. PrecisionBoost, no offense taken! According to my uncle, Chevy's (I think that's what he said) have a compression release valve, so he wasn't sure about the Daewoo. And since he has no internet access, he left it to me to find out the answer's on here. I don't know a whole lot about cars

, so if what I wrote seemed silly...well, I'm sure you understand now!

BosnianLanos · Post by **BosnianLanos** » Tue Jan 29, 2008 7:48 pm

Local junkyards and automobile recyclers are well-stocked with Daewoo heads. You can get used parts, new parts, or rebuilt parts.

When I was looking for a head for my Lanos that had a bad head gasket, prices were as low as $60. But you should be able to get something nice and decent for under $300.

Check http://www.car-parts.com

SykotikDisaster · Post by **SykotikDisaster** » Tue Jan 29, 2008 11:18 pm

Awesome! Thanks for the link, it's got some decent prices there! Thank you again!