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when is cylinder #1 on its compression stroke?
Posted by Smeter [Email] (more from Smeter) on Mon, 1 Oct 2007 15:29:22
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I wanted to do a "leak down test" on a 9000 with a DI cartridge. To do a proper leak down test, you need the piston to be at TDC on the compression stroke for the cylinder you are testing. Figuring out if cylinder #1 (as an example) is at TDC on its compression stroke is not a big deal if the car has an ignition rotor.
However, this is a little more challenging when you have a DI catridge to work with. As an aside, I'm not in the mood to take off my valve cover to note the postions of the cam lobes. Instead, I was thinking of working with the firing order that is noted on the valve cover (or is it the on the DI... forget... sorry). The question I have is ... when you put a b234 engine with cylinder #1 at TDC and the crank pulley at its timing mark (in the same way you set up the engine when you want to take the head off), is cylinder #1 on its compression storke or exhaust storke?
Any help would be appreciated. TIA.
posted by 207.112.44...
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