Have no clue what is wrong!

Tiny
JEN_SWEENEY25
  • MEMBER
  • 2002 OLDSMOBILE ALERO
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 72,300 MILES
My oldsmobile alero recently had a gas leak under the intake. My dad took off the intake and tightened the nut for the fuel line and stopped the leak. After putting everything back together where it should be we started the car. It started reving up to 5,000 rpms and then chugging and almost dying and back and forth until we shut it off. We were told by a shop to change the intake gaskets so we did problem still happens. When put into gear the car dies instantly. Any suggestions on what could be wrong?
Wednesday, December 29th, 2010 AT 4:29 AM

2 Replies

Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
You may have a vacuum leak somewhere. You can use either a rubber hose of can of starting fluid to chase down the leak.

When using a hose, put one end to your ear, the other around the intake, throttle and hoses until you find the leak. If using a can of starting fluid, make sure the engine is cold, keep a fire extinguisher close by and spray it very sparingly. If you hear the idle go up after spraying a spot, there's your leak.

Also, check Fuel pressure regulator for a leaking diaphragm. It's attached to the fuel rail and has a rubber hose attached. Pull hose and smell/feel for fuel. If there's any, replace it.

Finally, have the computer scanned for codes.
Was this
answer
helpful?
Yes
No
+1
Wednesday, December 29th, 2010 AT 11:58 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
I agree, most probable cause may be a vacuum leak, I prefer the listening tube to locate any leaks, as the spry method can be dangerous, get the scan done as well, also just make sure all electrical plugs are re fitted, and anything you disturbed is as it should be.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
+1
Sunday, January 2nd, 2011 AT 12:09 AM

Please login or register to post a reply.

Sponsored links