ashep91 Posted November 27, 2016 Share Posted November 27, 2016 Hi guys can anyone run me through how to do a compression test I know you should do it when hot and cold also I have a kit yo do it I take out king lead and crank is that it or anything else needed doing Quote Link to post Share on other sites
akyakapotter Posted November 27, 2016 Share Posted November 27, 2016 Do it when the engine is up to temp bud. http://www.dummies.com/home-garden/car-repair/fuel-system/how-to-check-an-engines-cylinder-compression/ cheers nick. Quote Link to post Share on other sites
ashep91 Posted November 27, 2016 Author Share Posted November 27, 2016 Cheers nick is the fuel pump fuse labelled of the fuse box if not which one is it? Some people say do compression test when cars cold some when cars warm Quote Link to post Share on other sites
ashep91 Posted November 27, 2016 Author Share Posted November 27, 2016 Which fuse done need to disconnect to disconnect the fuel pump? Quote Link to post Share on other sites
H_D Posted November 27, 2016 Share Posted November 27, 2016 Efi fuse. Quote Link to post Share on other sites
ashep91 Posted November 27, 2016 Author Share Posted November 27, 2016 Cheers h_d so this is the list of how to do it as I understand it Warm car up Turn car offTake out efi fuse and run car until it cuts out and burns off excess fuelTake out king lead Take out lead 1 and spark plug Put compression tester in And crankIs this right? Quote Link to post Share on other sites
Starlet__SR Posted November 27, 2016 Share Posted November 27, 2016 No need to run car till it cuts out. Fuel pump or injectors won't be operating. When cranking, do so with a wide open throttle Quote Link to post Share on other sites
ashep91 Posted November 27, 2016 Author Share Posted November 27, 2016 So just take out efi fuse and crank? Oys just the link above said to burning any fuel that might be left? Just don't want to blow myself up lol Quote Link to post Share on other sites
Starlet__SR Posted November 27, 2016 Share Posted November 27, 2016 So just take out efi fuse and crank? Oys just the link above said to burning any fuel that might be left? Just don't want to blow myself up lol Take out the EFI fuse, disconnect the king lead and crank, if there's no spark there's no bang. Quote Link to post Share on other sites
ashep91 Posted November 27, 2016 Author Share Posted November 27, 2016 Cool cheers Quote Link to post Share on other sites
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