SPONSORED LINKS

Vacuum leak?

Tiny
BUDDY56
  • MEMBER
  • 1998 CHEVROLET MALIBU
  • 163,000 MILES
I have a rough idle I htink it is a vaccum leak but I dont know where what is the best method besides a smoke machine
Saturday, September 15th, 2012 AT 2:52 PM

4 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Take choke cleaner and cleant eh throttleplate on both sides first. Then if it still idles roughspray the same cleaner around intake to seeif you can find it. If you rpms change you have the area wher eit is leaking.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, September 15th, 2012 AT 3:17 PM
Tiny
BUDDY56
  • MEMBER
  • 12 POSTS
I did the throttle cleaning and the maf sensor cleaning. Also I cleaned the iac. Is there any way to clean the egr valve on that car and also the map sensor
Was this
answer
helpful?
Yes
No
Tuesday, September 18th, 2012 AT 3:22 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes and check fuel pressure first. You have to taek the egr off to clean but he passagae may be blocked. You cannot clean teh map sensor. Check around pcv valve for vacuum leak or the pipe running to throttle body, they crack as they are plastic.
Was this
answer
helpful?
Yes
No
Tuesday, September 18th, 2012 AT 1:27 PM
Tiny
BUDDY56
  • MEMBER
  • 12 POSTS
I had a code 1108 but did not set off the light. I will try to clean the egr. I recently replaced the hose for the pcv along with the pcv valve
Was this
answer
helpful?
Yes
No
Thursday, September 20th, 2012 AT 1:45 AM

Please login or register to post a reply.

Related Engine Vacuum Leak Content

Vacuum Leak Test and Repair
VIDEO
Vacuum Leak Test and Repair
Instructional repair video
Vacuum Leak
GUIDE
Vacuum Leak
Discover the essentials of identifying and repairing vacuum leaks in your vehicle's engine with this comprehensive guide. Improve your car's performance and fuel...
VIEW MORE

Sponsored links