Misfiring on two cylinders

Tiny
TROD38
  • MEMBER
  • 1989 CHEVROLET CHEYENNE
  • 5.0L
  • V8
  • 2WD
  • MANUAL
  • 2,000,000 MILES
If I unplug the electronic spark control, is the engine suppose to die and could a bad ESC cause two cylinders to not fire and make the engine miss?
Do you
have the same problem?
Yes
No
Sunday, August 28th, 2016 AT 9:02 PM

1 Reply

Tiny
HMAC300
  • CERTIFIED MECHANIC
  • 48,607 POSTS
Try pulling one plug wire at a time to try to find cylinders that are missing then check plug wire for resistance, spark plug and compression. Also check for a vacuum leak under TBI unit. They blow gaskets there. Yes if you unplug ESC the engine will quit. It may be a distributor cap or low compression so check all this first.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, August 29th, 2016 AT 6:55 AM

Please login or register to post a reply.

Related Engine Misfire Content

Intermittent Misfire
VIDEO
Intermittent Misfire
Instructional repair video
Misfire Random Code P0300
GUIDE
Misfire Random Code P0300
The world of automotive diagnostics can be complex, with numerous codes and potential issues to keep track of. One of the more common engine diagnostic codes is P0300, which...
VIEW MORE

Sponsored links