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Spark plug gap?

Tiny
ANONYMOUS
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • 150,000 MILES
Fuel injection normal but engine is not recieving any gas spark plugs are dry what is the problem and what should I do
Thursday, October 18th, 2012 AT 6:45 PM

9 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Use a gage and check fuel pressure. Any applicable trouble codes? Do you have an injector pulse?
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Thursday, October 18th, 2012 AT 6:51 PM
Tiny
2120SEGURA
  • MEMBER
  • 1 POST
What is an injector pulse?
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Thursday, October 18th, 2012 AT 7:10 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
The computer pulses the injectors to spray fuel. You can use a noid lite to check. The autostore sells them.
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Friday, October 19th, 2012 AT 4:26 PM
Tiny
DERKAINER
  • MEMBER
  • 1 POST
  • 1995 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
Do different brands of spark plugs and wires fit each others and if so what is the brand to buy.
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Friday, June 26th, 2020 AT 12:28 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Delco is the best brand to use as it is OEM on that vehicle.
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Friday, June 26th, 2020 AT 12:28 PM (Merged)
Tiny
DAVE1951
  • MEMBER
  • 1 POST
  • 1993 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
What is the correct spark plug gap for a 5.7 L gasoline engine? The recommended spark plugs are CR43TS.
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Friday, June 26th, 2020 AT 12:28 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hello,

The gap for your spark plugs are - Gap: In.035 (mm 0.89). Here is a guide to help you change them out.

https://www.2carpros.com/articles/how-to-change-spark-plugs

Please let us know if you need anything else to get the problem fixed.
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Friday, June 26th, 2020 AT 12:28 PM (Merged)
Tiny
JOSH71411
  • MEMBER
  • 15 POSTS
  • 1993 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 220,000 MILES
I was wondering what I should gap my plugs at the underhood decal says 0.045 but everywhere else I read says 0.035 I am wondering which gap should I go with and which will give me the best performance and gas mileage
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Friday, June 26th, 2020 AT 12:28 PM (Merged)
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
If you got a 4.3L gap.045, if 3.1L gap.045 if 3.8L gap.060
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Friday, June 26th, 2020 AT 12:28 PM (Merged)

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