Your take on compression psi

FORD TAURUS
Avatar
TAURUSWHEEL
  • ✓Experienced Mechanic
  • 718 POSTS
Did compression reading on my 94 Taurus 3.0 65k miles,, every cylinder was 160 psi,, what is your take on this number??? Good?? Bad???? I can't seem to find info in my books as to what the number should be, give or take... just charts with info for high versus low, not interested in that.. Reason I'm asking is slight pinging issue at highway speeds, occassionally.. Timing is good, actually retarded it a little, seems to make no change, thanks for replies...
May 16, 2006 at 1:03 PM
Avatar
LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
The compression is very good not excellent as it should be 180. If you do a wet test it will probably be 180+. It is even and shows a good engine. Not to worry except if it gets in the 110,s and each cyl is different.
May 17, 2006 at 5:48 AM
Avatar
TAURUSWHEEL
  • ✓Experienced Mechanic
  • 718 POSTS
Appreciate the reply.. it wasn't a wet test... I was surprised myself at the numbers, all being the same, plus or minus a hair, all at 4-5 cranks, each cylinder came up the same way... so what should I look at for ping issue??? Maybe egr system?? I did do a flow test with a voltmeter, was told the volt readings were not bad... what about removing upper intake manifold and making sure egr passages are completely clear??? Any other ideas??? Thanks
May 17, 2006 at 10:28 AM
Avatar
LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
I would replace the EGR valve with a new one from Ford. It has been updated considerably and should take care of the ping. As you said cleaning the passages are good but you can do it without removing the manifold. Good luck
May 17, 2006 at 10:56 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
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