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After tune up the engine runs very rough

Tiny
KEVIN JONES4
  • MEMBER
  • 1995 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 227,000 MILES
Truck listed above is a k1500. I have changed plugs, wires rotor button, distributor cap, ignition coil, ignition control module. It will start upon plugs not being flooded when it starts it runs very rough, timing has been set to #1 plug several times and sometimes it takes a long start to turn over to a very rough run.
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Sunday, March 1st, 2020 AT 5:10 PM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

Do you mean the truck floods?

Did you check the actual fuel pressure? I would start there.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Are there any codes set? The coolant sensor does send a signal to the ECM for rich and lean commands.

Roy
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Sunday, March 1st, 2020 AT 5:31 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,785 POSTS
This guide will help you get the codes:

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Let us know what you find.
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Monday, March 2nd, 2020 AT 7:56 PM

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