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Leakdown test.......
Posted by jimmy (more from jimmy) on Thu, 21 Dec 2023 21:14:04
In Reply to: Re: When the diaphragm fails...., Saabterranean
[Profile/Gallery]
, Thu, 21 Dec 2023 17:50:12
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Measures the ability of the cylinders to seal. It is done by removing all of the spark plugs and hooking up the cylinder leak down tester and applying compressed air with the piston at TDC.
It's similar to a compression test, but more accurate.
For checking the fuel system you will need a CIS fuel pressure gauge to measure system pressure and control pressure.
Do you have a Saab service manual? You will need it to do the fuel system tests.
Small amounts of oil in the bottom of the air filter is from the crankcase ventilation hose from the valve cover. If you have trashed pistons and a bunch of blow-by there will be lots of oil in the air filter box. Good Luck!
posted by 172.59.1...
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