Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - 2005 zx3 2.0 Duratec stutter/shudder
View Single Post
Old 01-18-2013, 06:11 PM   #8
whynotthinkwhynot
Captain TMI
 
whynotthinkwhynot's Avatar
 
Join Date: Jan 2005
Fan#: 18416
Location: the armpit of TN, Memphis, TN
What I Drive: 05 Focus Wagon; 13 C-Max SEL

Posts: 20,275
Points 27,590, Level 98
Points: 27,590, Level: 98 Points: 27,590, Level: 98 Points: 27,590, Level: 98
Level Up 24% Completed
Level up: 24% Level up: 24% Level up: 24%
Forum Activity 12%
Activity: 12% Activity: 12% Activity: 12%
FF Reputation: 270 whynotthinkwhynot Outstanding Standing Member whynotthinkwhynot Outstanding Standing Member whynotthinkwhynot Outstanding Standing Member
Buy-Sell-Trade Rating: (1)
Rod bearings aren't affected by bumps in the road.

The valve noise you are hearing is most likely not valve noise. Use a mechanic's stethoscope to listen to the valve cover, and it will most likely be quiet. Listen to the intake manifold, and you'll hear the noise. That's the tumble flaps. If you do this diagnostic, and find what I wrote, then start a thread asking about tumble flaps.

CV axles don't typically cause stuttering or stumbling like you referred to. Vibrations can be caused, but it's doubtful that those would be severe enough to seem like the engine is being affected.
__________________
Be eclectic.
---The Complete How-To Archive--

Moderating everything now, let me know if I can help.

Quote:
Originally Posted by the user formerly known as ZX3_Chick View Post
You're special aren't you.
whynotthinkwhynot is offline  
    Reply With Quote