Stuck in a Hard Cold Start - Truck Forums

Thread Tools Search this Thread
Old 03-01-2012, 05:07 PM
Thread Starter
Join Date: Feb 2012
Location: Mexico
Posts: 1
Lightbulb Stuck in a Hard Cold Start

2004 Silverado 1500, 4.3L V6 2WD (120000Km)
I have this cold start issue, only showing in first start in the morning (or when sat 10-12hr), more when is cold, less when is hot.
My truck always start on at the 1 or 1/2 crank and now take 3-4 cranks or a second attempt to run, the rest of the day start at the first touch of the key.

I alredy made a lot of Research/Check parts and I am convinced is a fuel issue.But I need another opinion before spending another cent.
I have checked Cap, Rotor, Oil Sending Unit, Wires (new), Spark Plugs (new), Coil, Fuel Pump and Filter (new), Injectors (pressure cleaned twice), ECT sensor (new), IAC valve (cleaned), MAF sensor (cleaned), Air Filter (new), Cables and Battery (charged and tight/cleaned), all this parts are fine, No Trouble Code have been set.

The engine runs smooth, no rough idle (only high idle until warm), no stalls/backfires/misses, no black smoke from tailpipe, the plugs was little blackened (fouled) before be changed, I dont smell fuel in the oil dipstick, No Gasoline Dripping out of the tailpipe, Only smell a little bit of raw fuel in the first 5 seconds when the engine start in the morning (only morning), Gas mileage go down (1 or 2 minus) and Little Pinging or Knocking Engine sounds during full acceleration or high uphill and I feel a lack of power on full acceleration (but is a feeling).

Personal Conclusions:
1)Thinking is a bad Fuel Pressure Regulator (low pressure or small leaking)
2)Bad Fuel Injector Spider Assembly (small leaking)

What can be the real problem?.
What kind of spider assembly my truck should have? SCFI or MFI?.
The upgraded Spider assembly for SCFI Vortecs apply here?
Or just a FPR replacement?.

Thanks for the HELP
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Hard Start/No Start when cold izod Chevy Silverado/ GMC Sierra Forum 1 02-06-2009 02:38 PM
98 F350 diesel hard to start when cold akFord Ford Heavy Duty 0 09-17-2008 11:42 AM
Hard to start when cold DoMeStIc_FaN Chevy Silverado/ GMC Sierra Forum 5 02-06-2008 06:09 PM
hard cold starts woodys98 Chevy Silverado/ GMC Sierra Forum 0 02-07-2007 11:12 PM
Steering very hard when cold dpriceis Chevy Silverado/ GMC Sierra Forum 4 01-07-2007 09:53 PM

1978, black, chevy, cold, ford, fuel, gasoline, hard, raw, silverado, smell, smoke, start, sticking, tailpipe, truck

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 08:49 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.