84 Mustang question

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84 Mustang question

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84 Mustang question - 12/4/2007 4:40:12 AM

mayerst

Posts: 6
Joined: 7/5/2005
Status: offline

Good Morning,
I have an 85 302 carb motor with no spark. When I connect a spark plug to the coil wire it will spark but, not when connected to the plug wire. What to check first? The cap and rotor are new. In advance thanks to any and all who answer.

Tom

Post #: 1

RE: 84 Mustang question - 12/5/2007 11:33:35 AM

oldtimer35

Posts: 333
Joined: 11/27/2007
Status: offline

If you are getting spark from the coil, is it a hot spark (blue fire and will arc about 1 1/2 inches). If so, then the coil output voltage is good. If just a short arc, then maybe the coil is weak and cannot fire the plugs. If the fire is good, then it must be going to ground internally in the distributor, unless the problem is the connection from coil wire to distributor. Follow the fire and it will tell you were the problem is.

(in reply to mayerst)

Post #: 2

RE: 84 Mustang question - 12/28/2007 6:50:38 PM

mustang1337

Posts: 10
Joined: 8/27/2007
Status: offline

i agree with oldtimer, i had the same problem and fixed it by toying with the distributer

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