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Have a quick question. Disabling ignition?

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Old Jul 18, 2010 | 01:28 PM
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Default Have a quick question. Disabling ignition?

Hi everybody. Im still a SC noob and I wanted to do a compression test on my car. Whats the best way to disable the ignition on our cars? thanks
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Old Jul 18, 2010 | 03:56 PM
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Not ignition.....fuel pump. Remove the fuel pump fuse, start it couple of times until it dies, then go to work.
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Old Jul 18, 2010 | 03:57 PM
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disconnect the spark plug wire that goes to your coil
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Old Jul 18, 2010 | 04:07 PM
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remove the ignition fuse
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Old Jul 18, 2010 | 04:39 PM
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Originally Posted by topdog849
remove the ignition fuse
Originally Posted by LEX_MAN
Not ignition.....fuel pump. Remove the fuel pump fuse, start it couple of times until it dies, then go to work.
Im going to take both fuses out

which fuse box is the fuel pump fuse in?



Just to clarify but I figure the fuse labeled "IGN" is the ignition fuse correct?
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Old Jul 18, 2010 | 05:29 PM
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unplug the dist. Or both above will work fine. I am assuming your working on the 93 sc3- right?
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Old Jul 18, 2010 | 05:41 PM
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EFI fuse is in the engine compartment fuse box. Electronic Fuel Injection...i think thats how it translates..
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Old Jul 18, 2010 | 08:36 PM
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Originally Posted by frankdms
unplug the dist. Or both above will work fine. I am assuming your working on the 93 sc3- right?
Correct. Thanks everybody. Hope my comp test comes out even across the board
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Old Jul 18, 2010 | 09:46 PM
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You definitely want to pull the coil wire off the distributor. Disabling the fuel pump isn't gonna do squat to eliminate the spark that's gonna be at the end of your plug wires... looking for something/one to bite while you're checking the compression. Kill the spark!
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Old Jul 19, 2010 | 08:33 AM
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Pull the EFI fuse- no need to pull anything else. I've done this on an SC and supra for checking compression, works the same. DO NOT JUST DISABLE YOUR IGNITION. Your engine will flood with gas.
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Old Jul 19, 2010 | 08:48 AM
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Originally Posted by Klaus
Pull the EFI fuse- no need to pull anything else. I've done this on an SC and supra for checking compression, works the same. DO NOT JUST DISABLE YOUR IGNITION. Your engine will flood with gas.
Word. EFI fuse. Done.

Good luck,
Jonny
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