1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

COmpression test, how do u stop fuel pump?

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Old 02-13-06, 03:17 PM
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COmpression test, how do u stop fuel pump?

I want to do a compression test on my 12a (85 GS) and was wondering what wire/wires and where they are to shut off the fuel pump.
Thanks!
Justin
Old 02-13-06, 03:32 PM
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Pull the fuse:P its located under da dash, DS. should be a 15 amp (red one) in a verticle pos.
Old 02-13-06, 03:34 PM
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nevermind, found it
Old 02-13-06, 03:35 PM
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20amp labled 'engine'
Old 02-13-06, 03:45 PM
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lol there ya go... my bad.. sorry but ya got it figured. (Y)
Old 02-13-06, 03:52 PM
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thanks zd!
Old 02-13-06, 04:11 PM
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theres also a nother.....laymans way of doing compression test, just take out the trailing plugs, crank it.....you should hear three equal puffs from each rotor.

If you here 2 puffs i think it means a side seal is gone, and only one puff an apex... i dont remember how it works but if ya dont here the three.. somethings wrong lol
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