2000 Chevy S-10 running like a junker

Tiny
GBOD
  • MEMBER
  • 2000 CHEVROLET S-10
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 120,560 MILES
I have my 2000 S10 know for 9 months I have had the tune up done distributor cap replaced computer swapped map sensor mass sensor plugs wires compression check fuel injection swapped and its all fine. Now in a shop they are saying it might be a fuel rail but I don't have a rail what I got looks like a spider it starts up good but I hit the gas it bogs down and cylinder 4 is missing would the crank sensor have something to do with it or anything else I am lost or could it jump time. I been stuck for a month without my truck.
Do you
have the same problem?
Yes
No
Wednesday, October 27th, 2010 AT 11:57 AM

20 Replies

Tiny
WRENCHTECH
  • EXPERT
What is the fuel pressure? This is very important on that engine.
Was this
answer
helpful?
Yes
No
Wednesday, October 27th, 2010 AT 12:25 PM
Tiny
GBOD
  • MEMBER
Fuel pressure is at 65 and goes down to 45 pressure is good replaced pressure sensor to
Was this
answer
helpful?
Yes
No
Wednesday, October 27th, 2010 AT 12:44 PM
Tiny
WRENCHTECH
  • EXPERT
What do you mean "goes down to 45"? When?
Was this
answer
helpful?
Yes
No
Wednesday, October 27th, 2010 AT 12:47 PM
Tiny
GBOD
  • MEMBER
65 to start and 45 once its running I doubled check at the time with the haynes Manuel
Was this
answer
helpful?
Yes
No
Wednesday, October 27th, 2010 AT 12:55 PM
Tiny
WRENCHTECH
  • EXPERT
That's your problem. These engines require a MINIMUM of 55 PSI at all times or you will have problems.
They usually won't even run at 45.
Was this
answer
helpful?
Yes
No
Wednesday, October 27th, 2010 AT 12:57 PM
Tiny
GBOD
  • MEMBER
I have had it dianogised by two diffrent shops and both says the pressure is fine I could be wrong on the whole amount of pressure but will check thanks could there be something else some said if I have a crack in the crank sensor it could be the issue and if it is the pressure is that the pump or what would I replace
Was this
answer
helpful?
Yes
No
Wednesday, October 27th, 2010 AT 1:05 PM
Tiny
RASMATAZ
  • MEMBER
Hi gbod, Welcome to 2carpros and TY for the donation

Check the fuel pressure and get back with the readings we start here
Was this
answer
helpful?
Yes
No
Wednesday, October 27th, 2010 AT 1:10 PM
Tiny
WRENCHTECH
  • EXPERT
Believe me, a Vortec will not run right at 45 PSI.
Was this
answer
helpful?
Yes
No
Wednesday, October 27th, 2010 AT 1:24 PM
Tiny
GBOD
  • MEMBER
Ok thanks I will let you know ASAP thanks agine
Was this
answer
helpful?
Yes
No
Wednesday, October 27th, 2010 AT 1:28 PM
Tiny
RASMATAZ
  • MEMBER
I'll 2nd that-also at 52-BTDT
Was this
answer
helpful?
Yes
No
Wednesday, October 27th, 2010 AT 1:38 PM
Tiny
GBOD
  • MEMBER
Starts up at 61 and stays at 55 fuel pressure
Was this
answer
helpful?
Yes
No
Wednesday, October 27th, 2010 AT 3:03 PM
Tiny
RASMATAZ
  • MEMBER
Fuel injection swaped-You need to open it up and physically check the fuel pressure regulator and the nut kit

Is this 55psi while its running? If so shutdown and monitor the pressure how long it takes to go zero
Was this
answer
helpful?
Yes
No
Wednesday, October 27th, 2010 AT 5:30 PM
Tiny
GBOD
  • MEMBER
Cylinder 4 is miss fireing but got gas and good spark the hand held comp is saying p0300
Was this
answer
helpful?
Yes
No
Friday, October 29th, 2010 AT 11:32 AM
Tiny
RASMATAZ
  • MEMBER
Random misfires-normally caused by vacuum leaks and bad fuel-checkthe no.4 plug/compression and injector
Was this
answer
helpful?
Yes
No
Friday, October 29th, 2010 AT 11:38 AM
Tiny
GBOD
  • MEMBER
Done everything and number 4 has a miss still pressure is good spark is good change fuel injection no change
Was this
answer
helpful?
Yes
No
Monday, November 1st, 2010 AT 2:08 PM
Tiny
WRENCHTECH
  • EXPERT
You should have an injector balance test done to it. Those injectors do go bad and they can be changed individually.
Was this
answer
helpful?
Yes
No
Monday, November 1st, 2010 AT 3:32 PM
Tiny
GBOD
  • MEMBER
It's a bran new injection its one piece to its the v6 4.3
Was this
answer
helpful?
Yes
No
Monday, November 1st, 2010 AT 3:43 PM
Tiny
GBOD
  • MEMBER
It's the vortec motor I have replace fuel injection I have tested the harness on it I have done all senors be sides nock senor I have took the valve cover off I have check compression and fuel pressure I have done most of everything could the knock senor make just one plug miss or what?
Was this
answer
helpful?
Yes
No
Monday, November 1st, 2010 AT 3:49 PM
Tiny
WRENCHTECH
  • EXPERT
It's not one piece. It has replaceable fuel injector solenoids. This is a sequential injection system.
Was this
answer
helpful?
Yes
No
Monday, November 1st, 2010 AT 3:50 PM
Tiny
GBOD
  • MEMBER
That's not the point I swaped the whole unit and I have fuel
Was this
answer
helpful?
Yes
No
Monday, November 1st, 2010 AT 3:55 PM

Please login or register to post a reply.

Recommended Guides