'83 Chevy Blazer (305) has no spark! Replaced lots!


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'83 Chevy Blazer (305) has no spark! Replaced lots!

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Auto Repair Home>> Automotive Repair>> Engine Troubleshooting

xluke
New User

Jan 31, 2009, 11:17 AM

Post #1 of 3 (3287 views)

'83 Chevy Blazer (305) has no spark! Replaced lots!	Sign In

Hello,
I have an ''83 chevy blazer (k5) w/ a 305 engine with about 180k but less on the engine as I put a newer one in. All of a sudden it has no spark.

I have:
1) replaced entire distributor (including module and condensor)
2) replaced cap and rotor (including coil)
3) checked that I do have 12v at coil.

What else could be wrong here? I know I''m not getting spark as I''ve used a timing light and examined the plugs directly.

Is there a computer that could be the problem? How can I diagnose more things here?

Thanks for the help!, my plow is useless w/o this truck!

Loren Champlain Sr
Veteran / Moderator
Loren Champlain Sr profile image

Jan 31, 2009, 11:32 AM

Post #2 of 3 (3282 views)

Re: '83 Chevy Blazer (305) has no spark! Replaced lots!	Sign In

Have you physically checked to make sure that the distributor is turning? (timing chain?)
Loren
SW Washington

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jan 31, 2009, 12:13 PM

Post #3 of 3 (3280 views)

Re: '83 Chevy Blazer (305) has no spark! Replaced lots!	Sign In

Definately check if dist rotor is turning as Loren said.

Also - was scratching head as to why no spark with all that you listed??

Guess/Maybe: Coil and the wires may be the problem. Make sure that some dang grounding thingy (nice Tom

) swapped over when doing the coil and that the spring loaded carbon pile is springy so it touches rotor.

This may have had the common module failure or wires inside now fixed and the coil swap might have failed. The metal thingy is like an "L" thing that goes under one of the hold down screws and I think it can be left out by mistake or fall if you weren't looking??

Couldn't find any great pics of the set up but here's one to look at anyway,

Ok - That's a better pic. I'm thinking of the hook like thing all metal shown top rightish in that pic,
T

(This post was edited by Tom Greenleaf on Jan 31, 2009, 12:22 PM)

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