Is there any difference between a 03 ecotec and 04 ecotec are the timming tensioners the same. Is this true???
There are updated service procedures to the timing chain and timing chain oiling nozzle due to design changes that have been made to both components on 2000-2003 GM 2.2L L61 Ecotec engines. All timing chain kits now available in service will include the oiler nozzle. This new nozzle has higher flow rate characteristics that will increase oil flow to the timing chain under low rpm operating conditions. Whenever replacing a timing chain, it is important to replace the oiler nozzle.
Now from what i have heard the 02 and early 03 Eco's did have an oil problem with the timing chain that would cause them to fail early. But as far as i know it was fixed with a redesign on the 03+ Eco's. If anyone else want to put there 2 cents here and confirm this.
