Engine miss rocker arm was jumped off

1992 MERCURY MARQUIS
160,000 MILES • 4.6L • V8 • 2WD • AUTOMATIC
Avatar
WESTRUCK
  • MEMBER
  • 55 POSTS
When I start the car there is clicking noise. Then it would go away . One day the car had a miss. Number 6 cylinder had the miss. I took off the valve cover. Found rocker arm was jump off. Is it okay to put one rocker arm and lifter in? The lobe on cam looks good.
Jan 2, 2020 at 6:52 AM
Advertisement
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good evening,

Yes, but the reason it cam off needs to be determined. It may have been the lifter but it may also be a broken valve spring as well.

I attached the procedure below with the required tools needed.

Roy
Images (Click to enlarge)
Attached Media
Attached Media
Jan 2, 2020 at 7:09 AM
Avatar
WESTRUCK
  • MEMBER
  • 55 POSTS
Thank you Roy. I did not think about the valve spring. But I will check it.
Jan 2, 2020 at 7:18 AM
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
You are welcome.

always gad to help.

Roy
Jan 2, 2020 at 8:20 AM
Avatar
WESTRUCK
  • MEMBER
  • 55 POSTS
Is it okay to change one rocker arm,one valve spring and one lifter?
Jan 2, 2020 at 9:07 AM
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Yes, it is. You can replace just the broken parts.

Roy
Jan 2, 2020 at 9:12 AM
Avatar
WESTRUCK
  • MEMBER
  • 55 POSTS
Thank you for the info. I will do that.
Jan 2, 2020 at 9:16 AM
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
You are welcome.

Always glad to help.

Roy
Jan 2, 2020 at 9:18 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle