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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 75??? franken-trunk on April 24, 2008, 02:05:00 am

Title: no spark at all
Post by: 75??? franken-trunk on April 24, 2008, 02:05:00 am

i have an 84 chev with a 350 and hei... i recently had a engine fire and i decided to fix it. so i replaced the wiring harness cap, rotor, coil cover, (but not the coil) and wires, and i have no spark at all, there is no interior in the truck right now could that be the problem.

Title: Re: no spark at all
Post by: VileZambonie on April 24, 2008, 04:54:50 am

 ??? What do you mean? Why would having no interior make you have no spark? Do you have 12 volts at the coil with the key in the on position? Why did you have an engine fire?

Title: Re: no spark at all
Post by: choptop on April 24, 2008, 06:21:52 am

Did the spark control module get damaged? It will be under the dash and plugs in through the firewall behind the distributor.

Title: Re: no spark at all
Post by: 79scottsdale on April 24, 2008, 01:57:42 pm

This may help you a little:

http://nofrigginidea.com/e107/e107_plugins/coppermine_menu/displayimage.php?pid=9109&fullsize=1 (http://nofrigginidea.com/e107/e107_plugins/coppermine_menu/displayimage.php?pid=9109&fullsize=1)

Title: Re: no spark at all
Post by: 75??? franken-trunk on April 24, 2008, 09:16:21 pm

OK i replaced every thing, it runs, sorta... it backfires really bad all the wires are right, it has a edelbrock 600cfm that i cleaned out by disassembly. if i advance it it runs without backfiring until i lean the jets to tune the carb then it pops really bad again... but if i advance it any more after that it stalls out. Any ideas?

Title: Re: no spark at all
Post by: 78 BIG TEN on April 24, 2008, 11:41:50 pm

Make sure your firing order is correct as well as your timing.

Title: Re: no spark at all
Post by: VileZambonie on April 25, 2008, 04:46:56 am

Quote from: 78 BIG TEN on April 24, 2008, 11:41:50 pm

Make sure your firing order is correct as well as your timing.

This

Title: Re: no spark at all
Post by: Lt.Del on April 25, 2008, 09:13:25 pm

distributor 180 degrees off?

Title: Re: no spark at all
Post by: 75??? franken-trunk on April 26, 2008, 05:49:55 pm

never mind 7 and 2 were backwards