Wont start, intake manifold seems to be blowing air out instead of sucking it in...what can be the problem?

2000 LINCOLN LS
150 MILES
Avatar
ELI3000
  • MEMBER
  • 3 POSTS
I have a 2000 Lincoln LS (V8) that just refused to start one day. I have had a guy look at it and he tested the fuel pump relay switch and found out it was bad...so I replaced that. But he was still still stumped so he tested some other things and this is what he found out;
Check Engine light is on
Cams are turning
There is no intake vacuum (it seemed to be blowing air out instead of sucking in)
Fuel pressure fluctuates between 25 and 40 pounds
He reset the ECU
Has a brand new battery with secure connections.

He said maybe the timing is off or something, but isnt sure. He is saying if its the timing chain that I may just be better off getting an used engine...CANT AFFORD THAT. Any help or suggestions would be great.
Aug 26, 2011 at 12:59 AM
Advertisement
Avatar
MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
first step is read codes and post them second step, do a compression test and post result do dry and wet test record readings. pull fuel pump relay first. Do you have spark?
Aug 26, 2011 at 8:36 AM
Avatar
ELI3000
  • MEMBER
  • 3 POSTS
Sad that I still have this car sitting in the garage. I have had several people come out to read codes on the car and each time they could not get any. I will follow your advice and have someone do a compression test and pull the relay. If you mean by "spark" does it crank? yes.
Jun 9, 2012 at 3:49 AM
Avatar
MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
Spark at the plug wires.
Jun 11, 2012 at 7:34 AM
Avatar
MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
With backpressure this high, look for plugged exhaust and bat catalytic converter(s).
Jun 11, 2012 at 10:15 AM
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 Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.