Well apparently the tool is nationally back ordered and gonna take months to get. They later stated that there is a special tool need to hold the lifters or something along those lines. This also makes me wonder the high cost of sealing this timing chain cover during the new engine assembly by Mazda. ram250044 said: i took my truck to the dealer for diagnoses to find the leak coming from the timing plate so they say anyway.I believe thats why Kedis82ZE8s Mazda dealer couldnt fix the problem after 2 tries. The repair procedure is complicated and its hard for the tech not to screw it up. If you read the TSB which features very detailed explanation of why the front timing chain cover leaks, and how the Mazda dealer would fix the problem. I, for one, wouldnt want to do that just for checking these leaks, until to the time Im changing the ATF. That means you need to take the under-cover down in order to see the leaks. But if you follow that long thread Kedis82ZE8 created more than 3 years ago, you would find it takes some effort to detect these leaks from BOTTOM. Most would assume this wont happen to a fairly new engine. I would like to thank the Orlando Aston Martin technician for taking these photographs.Click to expand.Firstly, most people including me, wont bother to look for these engine seepages or leaks. This gives you an idea of why replacing the Timing Cover gasket is so damm expensive, it’s the labor. Suspension parts, shocks, springs, rotors, calipers, inner fenders, wheels etc. Suspension cradle with sway bar and steering rack is re-installed by lowering car down onto rack.
#Front timing cover leak install#
Note seal install tool in photograph below. The Timing Cover is re-installed with the revised Timing Cover gasket.Ī new crankshaft seal is installed. Photographs below show Timing Cover removed. Everything is removed to gain access to the timing cover. Serpentine belt, pulleys, oil reservoir, crankshaft damper, alternator, power steering pump, oil filter etc. This now allows unfettered access to the bottom and front of the engine (photograph below). With the front steering cradle bolts removed, the car is then lifted up to reveal removed cradle with front sway bar and steering rack attached. A specially designed support is put under the front steering rack cradle. Wheels, brake rotors, suspension arms, shocks, inner fenders etc. The car then is put on a lift and the necessary underbody panels removed to gain access to the engine's timing cover. The engine is supported from the top of the engine bay with an engine support beam secured at each shock tower. The repair starts with protecting the front half of the car with a huge bra like covering.Įngine strut brace, coil packs, spark plugs and both valve covers are removed. One other thought, you want this done right the dealer will have the necessary tools and expertise. (See photograph below)Įngine support brackets that attach on to the engine support beam. In addition to an engine support beam, the following tools are needed. If you are thinking of doing this yourself, note that special tools will be needed for this project. The oil reservoir needs to be removed so an oil change will be part of the process. The difference might be less that you think.Īs part of this fix, the dealer will change not only the timing cover gasket, but the valve cover gaskets as well, which are also prone to weep oil. It’s expensive whether it’s done by the dealer or an independent shop. Labor estimate for this job is approximately 20 hours. The only solution is to replace the gasket with the revised version. Invariably, the leak would re-appear at some point, in most cases when the car was out of the Factory's warranty. This was not only rubbish, but an absolute waste of time. The Aston Martin technicians were instructed to apply an external sealant. If a customer brought in a car with a leaking timing cover, It seems Aston Martin's strategy for this issue was to delay the inevitable. Somewhat of an issue with a small number of 4.7 engines, this improved gasket has, for the most part, fixed this problem. If you own an Aston Martin with the 4.3 V-8 Engine the Timing Cover gasket will probably leak.Īston Martin designed an improved gasket that made its debut with the introduction of the 4.7 engine. Replacing The Timing Cover Gasket Replacing The Timing Cover Gasket
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