Cost of parts: Timing kit $129.53, timing cover gasket $23.86, crank bolt $7, valve cover gasket, if needed, $25.27Ģ) Remove two 10mm nuts mounted on studs in the driver's side of the valve cover.Parts: Timing chain kit (Cloyes 9-4201S), timing cover gasket (Fel-Pro TCS46041), crank pulley bolt, valve cover gasket set (Fel-Pro VS50596R), if needed.Materials: Lacquer thinner, motor oil, oil catch pan.Tools: Floor or scissors jack, supports, 10,13 15,18 and 21 sockets, all sizes of ratchets, socket extension bars,universal socket adapter, 10mm allen wrench modified to 3cm, large straight blade screwdriver, pry bar for locking the crank pulley, torque wrench, (inch and ft lb) 10" long 10mm and 15mm box end wrenches, 18mm and 24mm wrenches, breaker bar(s).This is a challenging repair (we got a $1200 estimate) but we completed it successfully and I wish you good results if you tackle this job. We also felt confident that the chain coming loose on start-up made valve damage unlikely, as opposed to under load. A leak down test is ideal here, but we did not have the equipment. There is always the possibility, on an interference engine like this, that valve damage may have occurred. Then we will re-assemble and test the work. A new kit of timing parts will be installed. Correct cam, piston and crank timing will be re-established. Then the chain and associated components will be removed and inspected. This post will cover removal of the valve cover and a front engine tear down. Removal of the valve cover revealed a very loose timing chain. The starter seemed to be running free, as if under no load. One of the guides must have let go or the tensioner must died.One morning this past winter, a friend's 2003 Chevrolet Cavalier cranked but failed to start. I opened the valve cover on Saturday and yes the chain was loose. I need my car for work, I can't pay $100 round trip in taxi each day. Why does that mechanic has to be so slow, i feel like i have to push him in the bum to get moving. Its a long Weekend here in New Brunswick, Canada. Saturday, I go and my car still not in the garage. Said my car would go in the garage on Friday. After I finally got all the parts for the work on last Thursday. It was far more common to have a camshaft gear lose a tooth, but that does not mean that it was a highly regular occurence. My former experience in aftermarket auto parts and repair never revealed a failure on this part. The odds of a crankshaft gear being damaged are very low. One member in the L-Series Forum did a micrometer check on the gears being replaced and found the wear was very minimal. In general, when starting with a new chain it's always preferable to have new gears. And the quality would have been well doubthfull. Some kit from (china) had the balancer chain and timing chain everything in it, but I would only get it in August. Another factor was how quick I would get the part at home. This is the only kit from Cloyes that fits my 2.4 : Cloyes 9-4201SX Timing Chain. If thats the case then i'll be ****, cause that mean more ordering and more time down. More then likely the chain will be damage or stretch more then a gear missing a tooth. Unless is something wrong with the 3 sprokets. Cause I wanted the AC Delco kit specifically regardless. Questions: have you purchased the kit already? If so, was there a reason why you choose one that did not include replacement crank and camshaft gears? ( This is simply out of curiousity and nothing more.) With regard to the ACDelco 12680750 kit, this is an OEM set which I found at my preferred OE parts website and I would have no qualms about installing it. I will be installing Cloyes brand sets (all gears and tensioners included) on my car soon. The 2.2L and 2.4L Ecotec engines utilize the same timing chain and balance shaft chain components.
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