Gain extra benefits by becoming a Supporting Member Click here find out how!
Silver
Gold ***Platinum***
Carl1962 (2)briski1971 dfwwingnut CowboyTrukr (3)sz0k30 (6)
Suburbazine (2)Gunk(7)markl350 (6)roseyintxCutlass442 (10)Rager
Chevyfan60 (10)JohnE (12)cnbell (11)Todd M (11)savina64
LRH (3)61ohboy66conv55_FEVER george88gta (10)BillOrton39
beebeesycstevebigears
68 Bel-AirNitroholic (10)
warpwr (8)Lynn63 (5)
scottdalealrenchBelair54HT (3)
boerdoc (3)kiwimike (6)
Jim.Biron (7)
1956chevy (2)
BMF-1955
Classic Performance Products
Ciadella Interiors American Auto Wire Art Morrison.com
Exile® Battery Keeper™ 6/12 volt charger w/ LED battery monitor
Hellwig Products IncPerformance Rod & Custom
Impala Bob's Bob's Chevy Trucks Bob's Chevelle Parts Bob's Classic Chevy

  >> Switch to Mobile Version <<

Recent Hot Topics
Current Quote
"I just want to say thanks to all of the contributors on this forum. There is a wealth of knowledge here and a super willingness to share. I can't get better and faster answers here than on ANY other board and I do frequent a lot of forums. THANKS AGAIN!!"
~ Member
Recent Topics
WIN / WIN

Use this to search for parts on Ebay
A portion of your purchase will come back to the site.
Username Post: Misfiring Vortec V6/4.3L 2001Chevy silverado 1500        (Topic#92207)
Anonymous 

02-24-05 02:51 PM - Post#634179    

I just replaced the injectors from the old style to the new MFI injectors. I changed them because we thought it might have been the cause of the misfire condition in multiple cylinders and broke 2 injectors in the process of looking at them (long story). So the new assembly is in the truck but seems to still be misfiring. After we changed the part we started the engine and it ran great for 2 min, and then seemed to be starving for fuel after that. Took it for a drive and had literally no power. Seemed to have barely made it back to the driveway. Could it be possible one of the nozzles slipped out of the cylinder? I did notice #5 a bit more loose when it was installed than the other 5. Is this the problem, or is it possible the misfire condition all together is a bad fuel pump. Plan on a fuel pressure test tomorrow but wanted some help troubleshooting this problem.

 
Vaughn 
"12th Year" Gold Supporting Member
Posts: 14693

Loc: Colorado Springs, CO
Reg: 08-08-04
Re: Misfiring Vortec V6/4.3L 2001Chevy silverado 1
02-26-05 07:59 PM - Post#634180    
    In response to JQuig

Get the fuel pressure first. Then you will know if there is a problem with the regulator or the fuel pump. Once you have eliminated these as a possibility, you can look at specific injectors for problems. Low power GENERALLY points to a fuel pressure/regulator problem.

I think these trucks have seperate coil packs. Have you checked the coils to make sure they are OK? Check the resistance of the prmary winding and the resistance between the primary and secondary winding against what it says in your manual.

 
Icon Legend Permissions Topic Options
Report Post

Quote Post

Quick Reply

Print Topic

Email Topic

2383 Views
FusionBB
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.132 seconds.   Total Queries: 13   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 11:53 PM
Top