Whne I start my truck it runs a little rough and when I press on the gas pedal it dies what would cause this?

Tiny
MATHEW_S
  • MEMBER
  • 1987 FORD RANGER
  • 150,000 MILES
I have checked all the fuel pumps, the filter, fuel pressure regulator and they are all working but the minute I press on the gas it dies. If I hold the gas pedal down it starts to back fire really bad.
Friday, October 28th, 2011 AT 12:20 AM

9 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Check for a vacuum leak and make sure the catalytic converter isn't plugged.
Was this
answer
helpful?
Yes
No
Friday, October 28th, 2011 AT 12:39 AM
Tiny
MATHEW_S
  • MEMBER
  • 5 POSTS
I checked for vacuum leaks and didnt find any and my truck doesnt have a catalytic converter it was removed cause it was plugged also I have an oil substance coming from my exhaust at the tail pipe and where the exhaust connects to the muffler.
Was this
answer
helpful?
Yes
No
Friday, October 28th, 2011 AT 2:13 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
It is black and water like?
Was this
answer
helpful?
Yes
No
Friday, October 28th, 2011 AT 3:58 AM
Tiny
MATHEW_S
  • MEMBER
  • 5 POSTS
Yes its black and kind of water like.
Was this
answer
helpful?
Yes
No
Saturday, October 29th, 2011 AT 8:58 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
That is most likely condensation mixing with carbon in the exhaust. Not a concern
Was this
answer
helpful?
Yes
No
Monday, October 31st, 2011 AT 4:29 AM
Tiny
MATHEW_S
  • MEMBER
  • 5 POSTS
Well I am at my wits end with this truck I checked everything on it yesterday and still nothing. For some reason when I give it gas it just dies.
Was this
answer
helpful?
Yes
No
Monday, October 31st, 2011 AT 5:13 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
It sounds like a throttle position sensor or a major vacuum leak. Check vacuum at the intake. It should be around 17.
Was this
answer
helpful?
Yes
No
Monday, October 31st, 2011 AT 7:14 PM
Tiny
MATHEW_S
  • MEMBER
  • 5 POSTS
17? YYou have to forgive me I'm vehicle illiterate what do you mean around 17?
Was this
answer
helpful?
Yes
No
Monday, October 31st, 2011 AT 7:24 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Inch pounds of vacuum.
Was this
answer
helpful?
Yes
No
Monday, October 31st, 2011 AT 8:40 PM

Please login or register to post a reply.

Sponsored links