chevy 350 won't start - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 03-22-2007, 05:49 PM
Registered User
 
Join Date: Mar 2007
Location: Ohio
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
chevy 350 won't start

I have a 92 Chevy silverado 1/2 ton extended cab just got it to start tinkering again. Problem is I can't get ot to start ofter it has been shut off for a few hours.Originally it would start and die oil press switch/transmitter was bad causing fuel pump to shut off. I bypassed switch and drove it home. I replaced switch and checked fuel pump psi was 15 at dead head held psi at 11 next morning. It is running for the 2 sec at the turn of the key. I bought a press regulator rebuild kit and installed it.No change I reset timimg no change.
It will start if i crank it long enough for oil psi to hit 20 psi which engages the fuel pump for continuous running.Next thought is on the psi reg, in the kit you get the baffle spring and gaskets but you don't get the other half of the seat. The one still in the TBI housing wondering if a small imperfection in the face is allowing it bleed off. To prove this I am thinking of putting a tube to pipe T in the fuel supply line and checking psi the next morning. Unless somebody can point me in another direction. SORRY for the long winded story but I hate an incomplete problem

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 03-22-2007, 06:38 PM
docvette's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Rebuild an alternator Last photo:
Join Date: Mar 2004
Location: Lafayette, california
Age: 62
Posts: 7,362
Wiki Edits: 12

Thanks: 0
Thanked 6 Times in 3 Posts
Doc here,

One thing you might check, is the "Prime/Bypass" Circuit for the Fuel pump during crank mode..(refer to a Haynes manual to see if this has one)..

Also a loose or corroded fuel pump relay might cause the problem..

TO check the Prime circuit, you should be able to jump the oil pressure sender into thinking it has oil pressure, then try starting, If do it's in the prime circuit.

You may not be pulling enough fuel pressure while cold cranking to turn the fuel pump on..and actually start.

Doc
__________________
Aftermarket Solutions
Electronic & Electrical
Innovations
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-23-2007, 06:21 AM
spinn's Avatar
Reviewing the situation
 

Last journal entry: This makes a huge difference
Last photo:
Join Date: Oct 2004
Location: here
Posts: 2,555
Wiki Edits: 0

Thanks: 14
Thanked 88 Times in 85 Posts
thats some good addvice, are you able to ohm out/check the sensors? yes get fuel PSI.

i dont think the imperfection would do it.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hi. just wondering why the 350 chevy small block is so good... judgedredd Hotrodders' Lounge 78 06-25-2010 09:01 AM
El Camino Engine - 350 Chevy or 455 Pontiac bjam2 Engine 16 08-07-2007 04:45 PM
Will my Buick 350 (1970) fit into my 1984 Chevy K10? GFORCECONSTRUCTION Engine 0 05-22-2006 08:58 PM
chevy 350 hesitation BICHN69 Engine 2 06-25-2004 11:56 PM
85 chevy 305 heads on an 89 TBI chevy 350? jazzguitar Engine 4 11-03-2002 05:11 AM


All times are GMT -6. The time now is 08:12 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.