SPONSORED LINKS

Engine wont start What should the compression psi be at?

Tiny
JSALZ
  • MEMBER
  • 1994 FORD F-150
  • 5.0L
  • V8
  • 4WD
  • AUTOMATIC
  • 138,000 MILES
What should the compression psi be at?
Saturday, February 18th, 2017 AT 9:51 AM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,807 POSTS
Hello,

With this many miles the compression should be between 125 and 140.

https://www.2carpros.com/articles/how-to-test-engine-compression

Please use 2CarPros anytime, we are here to help and tell a friend.

Best, Ken
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, May 31st, 2021 AT 12:45 PM
Tiny
JSALZ
  • MEMBER
  • 13 POSTS
1994 ford f150 has spark fuel pressure and compression and still no start
Was this
answer
helpful?
Yes
No
Monday, May 31st, 2021 AT 12:45 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,807 POSTS
Are the injectors getting a trigger signal? Here is a guide to help you test the problem.

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Please let us know what you find.

Best, Ken
Was this
answer
helpful?
Yes
No
Monday, May 31st, 2021 AT 12:45 PM
Tiny
JSALZ
  • MEMBER
  • 13 POSTS
Has little vacuum pressure, all hoses are connected. It runs fine with mass air flow sensor unplugged, changed it cause I thought it was the problem but wasn't. Getting fuel pressure, any suggestions?
Was this
answer
helpful?
Yes
No
Monday, May 31st, 2021 AT 12:45 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,807 POSTS
Lets run the trouble codes to see what the computer says,

https://www.2carpros.com/articles/ford-lincoln-mercury-obd1-1995-and-earlier-diagnostic-trouble-code-definition-and-retrieval

Please let us know happens.

Best, Ken
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, May 31st, 2021 AT 12:45 PM

Please login or register to post a reply.

Related Engine Not Running Content

How to fix an engine that wont start
VIDEO
How to fix an engine that wont start
Instructional repair video
Engine Not Starting
GUIDE
Engine Not Starting
Over the past 20 years at 2CarPros we have identified the top problems that are easily fixed. This guide can save you a trip to the repair garage or calling a tow truck and...
VIEW MORE

Sponsored links