Engine flooding - 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> General Rodding Tech
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 08-13-2008, 08:41 PM
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,927
Wiki Edits: 0

Thanks: 0
Thanked 10 Times in 10 Posts
Engine flooding

Not exactly a hotrod question but a fellow called me a little while ago with a problem he has with a 1989 Plymouth Acclaim 2.5 4 banger with a TBI system that is running extremely rich. He said it will not pull up any codes when he had it scanned but it is obviously running a very rich mixture. The garage he had it to replaced the air filter and spark plugs and it ran fine for about 200 miles but now the plugs are sooty black and fouled out again. They told him it was probably a bad sensor (did not say what sensor) and without a code they would just have to guess at it until they got it right and that it could get quite expensive, I bet it could doing that! He called me and asked my opinion on what could be causing this and I told him I would ask you guys and see what you all think. I am leaning toward a bad 02 sensor but could this cause the mixture to run so rich as to almost be flooding? Any other suggestions? If the plugs are changed it would seem to run just fine for about 200 miles or so before fouling them out again. One odd thing is that as rich as it seems to be running there is no noticeable black smoke until after the plugs become fouled and it starts to miss.

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 08-14-2008, 03:20 AM
hrlys4evr's Avatar
60-66 chevy truck nut

Last journal entry: Hood finally in paint
Last photo:
Join Date: Feb 2008
Location: Chula Vista, CA.
Age: 42
Posts: 42
Wiki Edits: 0

Thanks: 5
Thanked 3 Times in 3 Posts
Test them suckers

You can run tests on a majority of the sensors with a multimeter. Gonna have to look up the procedures to do it correctly, but it can be done at home. I would start with that dreaded O2 sensor, then the MAF sensor if it has one. If there is a sensor, there is a way to check it. May take some time but feasable. I can't look at my books right now to dig up the procedures... On a deployment again but here is a link to get things rolling. Good luck! Hope to hear good news.

Or just google testing O2 sensor.....


Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-15-2008, 02:35 PM
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,927
Wiki Edits: 0

Thanks: 0
Thanked 10 Times in 10 Posts
FWIW, the problem turned out be the MAP sensor. I used the key on/off/on trick to get the check engine light to flash the codes and it produced a code 13 which is for the MAP sensor. I simply tapped on the thing lightly and wiggled the connector and the engine smoothed out, I then ran it for a while and the sooty plugs burned themselves clean again. We replaced the MAP sensor anyway in case the other one was actually bad and the tapping/wiggling might have been just a temporary fix. Just thought this info might be useful to someone else sometime, anyway my problem is solved.
Reply With Quote Quick reply to this message

Recent General Rodding Tech posts with photos

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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
the history of chevy v8's savman1 Hotrodders' Lounge 43 03-02-2012 06:57 PM
Build for Hp or Torque? Venturat Engine 76 09-23-2008 10:22 AM
intake leak? cope Engine 4 05-08-2008 07:59 PM
1985 C-6 truck tranny, no engine braking effect fast68 Transmission - Rearend 40 02-04-2008 05:55 PM
I believe my engine is flooding Soytre Engine 5 10-19-2006 06:41 PM

All times are GMT -6. The time now is 07:08 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.