No spark questions, and have questions

T

Tofast4U

Not-quite-so-new-guy
Jan 8, 2019
35
2
8
#1
I replaced my Cap and Rotor an Now have No spark. So after troubleshooting tonight I still have no spark and more questions.

I have power at the coil, I have power coming out of Coil.
No spark coming out of coil
No voltage at the Pickup coil. (Should I have Voltage at the Pickup coil????) I have 0 on volt meter. I would think you should get some readings.
Checked my fuses they are good.
checked my connections.
Electronic module had some corrosion on the pins, cleaned them up.

Any other idea's?
 
DRIVEN

DRIVEN

Geezer
Apr 25, 2009
5,498
4,911
113
Owyhee County
#2
Did you remember to swap the ground strap?
20190410_052131-jpg.110763
 
airboatgreg

airboatgreg

Royal Smart Person
Oct 2, 2016
1,478
1,361
113
#3
Make, model, year and engine?
Stock ignition?
 
TURNA

TURNA

Geezer
Jul 24, 2009
7,010
9,247
113
Socialist NY
#4
Like DRIVEN said plus the little springy thing in the center of the cap

If everything is there put the old one back on see if it starts
 
T

Tofast4U

Not-quite-so-new-guy
Jan 8, 2019
35
2
8
#5
87 monte SS with vortec 350. Where is that ground strap located? still using Stock ecm and the electrical.
 
DRIVEN

DRIVEN

Geezer
Apr 25, 2009
5,498
4,911
113
Owyhee County
#6
Sandwiched between the coil and cap. Often gets overlooked when replacing cap and rotor. New caps don't have them installed so you have to pull it from the old one and swap it over.
 
Dayzedandkonfuzed

Dayzedandkonfuzed

Master Mechanic
Feb 9, 2010
360
157
43
Anglemont, BC
#7
87 monte SS with vortec 350. Where is that ground strap located? still using Stock ecm and the electrical.
Vortec distributor or coil in cap?
 
84GP455

84GP455

G-Body Guru
Jun 19, 2007
756
70
28
Methuen Ma.
#8
Could be the HEI control module, I had them crap out on me many times they can be finicky and can quit without a notice, so I always keep a spare one on hand. If you are getting no spark but its turning over, I would try replacing the module and don't forget the thermal paste on the base of it or it will over heat and won't last long.
 
Last edited:
Gonzo1970

Gonzo1970

Master Mechanic
Supporting Member
Sep 30, 2018
342
354
63
#9
Sandwiched between the coil and cap. Often gets overlooked when replacing cap and rotor. New caps don't have them installed so you have to pull it from the old one and swap it over.
If he had to ask where it was, I'm betting he didn't swap it. I think you nailed it.

-Gonz
 
T

Tofast4U

Not-quite-so-new-guy
Jan 8, 2019
35
2
8
#10
My Rotor didn't have that part... Had Bad pickup coil on the distributor. Replaced with all new and runs better then ever... Thanks for the replies.
 

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