Archive: April 2008

Intake manifold test.

Engine started nicely again. Performed intake manifold vacuum test (just stick this gauge into one the vacuum hoses, then start the car and note the vacuum reading). Results are good, maybe a little high though. Results below (in inches of Mercury): Fully depress throttle, needle jumps between the two throttle blip indicators. At idle the needle flickers with a range of ~0.7 sits at about 22.5. As throttle is gradually…
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Compression test again.

Car started straight away today. Thought I’d do the cylinder compression test again before moving on to test the intake and fuel fump vacuum pressures. But, battery run out after the compression test, so intake vacuum will have to be tomorrow. The difference in results from yesterday, although minor, are probably due to the engine being hotter as the test was conducted quicker this time round. Curious why number 4…
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Compression test.

Car would not start today. Ha. Gravity fed petrol into pump then reattached fuel lines and car runs. Unsure of problem. Performed compression tests on the cylinders of the engine – remove all spark plugs, then screw the gauge into each spark plug hole whilst turning the engine over.   An engine overhaul is intended (new gaskets, piston rings etc.) but this test should flag up any serious problems. Diagnosed…
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