1988 Chevy Truck No spark at plug

Tiny
TDECKER85087
  • MEMBER
  • 1988 CHEVROLET TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 178,000 MILES
I have no spark at the plug until I rotate the distributor (2 inches) while cranking the engine. I have replaced the rotor, distributor cap, module, plug wires. What should I look at next?
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Saturday, November 14th, 2009 AT 7:35 PM

4 Replies

Tiny
BMRFIXIT
  • EXPERT
Remove distributor cap and have a helper crank the engine for you as you check if the rotor
rotating
if not remove distributor and check gear and also check timing
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Sunday, November 15th, 2009 AT 8:05 AM
Tiny
TDECKER85087
  • MEMBER
The rotor does rotate while cranking. How do I check timing if the motor will not run?
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Sunday, November 15th, 2009 AT 6:54 PM
Tiny
BMRFIXIT
  • EXPERT
Can you clarify some thing for me
with engine cranking you have no spark you moved the distributor and you have spark know put no start
is that correct
or you have no spark at all
do you have spark at the coil
check coil and connector
one way to check if the rotor and crank shaft timed is to put the crank shaft at top zero center
check if rotor at or close to # 1 spark lug wire at the cap
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Sunday, November 15th, 2009 AT 7:01 PM
Tiny
TDECKER85087
  • MEMBER
That is correct. When I turned the distributor and sparked I had the engine crank several cycles and the plug would not spark again until I turn the distributor again and repeated it a few times.
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Sunday, November 15th, 2009 AT 7:09 PM

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