SPONSORED LINKS

Rough idle

Tiny
NUCHEMIST
  • MEMBER
  • GMC
1999 GMC Yuckon Denali 145,000miles. It has a 5.7L vortec engine. I notice a rough vibration when idling. It isn't something big just something I notice a lot. I recently replaced The TP sensor, Spark Plugs, Spark Plug wires, Fuel Filter, Air Filter and serpentine belt. I just want it to idle nice and smooth. I am thinking it might be the Vehicles timing but don't want to waist all the money if it ain't the problem. I was wondering if there is anything else I can do to get rid of this rough/poor idle? When I replaced the spark plugs I noticed that one of my plugs had oil around the threads Is this something to worry about I checked my oil and noticed that it was low. What could this problem be?
SPONSORED LINKS
Thursday, June 29th, 2006 AT 7:39 PM

1 Reply

Tiny
KENVCR
  • MEMBER
  • 105 POSTS
Hi, you mentioned oil around the threads of a spark plug. Since you have changed the plugs with new ones, go back out and removed the one that was oily. Is it still oily? If so you will be experiencing lower compression in that cylander hence the rough vibration.
Do not for any reason try to adjust your timing unless you have the proper tools and instructions on how to do it. Your on-board computer monitors and manages the timing of your engine.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, August 12th, 2006 AT 8:56 PM

Please login or register to post a reply.

Related Engine Idle Rough Content

Rough Engine Idle
GUIDE
Rough Engine Idle
A rough engine idle condition is a common issue that many drivers face often indicating underlying problems within the engine, fuel or ignition system. We have created this...
VIEW MORE

Sponsored links