1991 Chevy Lumina

Tiny
BADBOYZDERBY
  • MEMBER
  • 1991 CHEVROLET LUMINA
Engine Performance problem
1991 Chevy Lumina 6 cyl Front Wheel Drive Automatic

Why does my 3.1 port fuel injected car bog out when you go hit on the gas?
Do you
have the same problem?
Yes
No
Sunday, May 18th, 2008 AT 11:49 PM

7 Replies

Tiny
MHPAUTOS
  • EXPERT
Hi there,

Start with a scan test, checking for a possible problem with a TPI sensor, also check fuel pump pressure and flow rate, get a fuel rail pressure test done, start here.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Sunday, May 18th, 2008 AT 11:58 PM
Tiny
BADBOYZDERBY
  • MEMBER
What are the ratings for the fuel pump pressure, flow rate, and fuel rail pressure? What is the TPI because I think I put a new one in?
Was this
answer
helpful?
Yes
No
Monday, May 19th, 2008 AT 12:08 AM
Tiny
MHPAUTOS
  • EXPERT
Hi there,
The TPI, is the throttle position indicator or sensor, located at the throttle body, as for the fuel pressures& flow rates, I will have to re post as I don't have access to that info on this computer.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Monday, May 19th, 2008 AT 12:14 AM
Tiny
BADBOYZDERBY
  • MEMBER
I already change the TPI
Was this
answer
helpful?
Yes
No
Monday, May 19th, 2008 AT 12:18 AM
Tiny
MHPAUTOS
  • EXPERT
Hi there,

OK, have you done a scan, just in case there is a fault code logged. And check the usual things, if you have not already, fuel filter, all tune items, vacuum leaks.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Monday, May 19th, 2008 AT 12:23 AM
Tiny
BADBOYZDERBY
  • MEMBER
There is no faulty code, their is no fuel filter any more but it ran fine with out one, I have some new plugs but I did just one side and I cant seem to find a vaccum leak but I will try to see if I can find one what is the best way to find a vacumm leak
Was this
answer
helpful?
Yes
No
Monday, May 19th, 2008 AT 12:28 AM
Tiny
MHPAUTOS
  • EXPERT
It's a bit of a worry that you're not running a fuel filter, the injectors may be affected with all the muck in the fuel, you will be surprised how much rubbish your filter will catch. To check for a vacuum leak, you can use a length of hose and use it as a stereoscope and listen around the manifold gaskets and vacuum ports, you should hear a leak.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Monday, May 19th, 2008 AT 12:35 AM

Please login or register to post a reply.

Recommended Guides