89 t-birdsc stumbles w/ boost - TCCoA Forums
 
LinkBack Thread Tools
post #1 of 13 (permalink) Old 12-17-2006, 01:42 PM Thread Starter
 
Join Date: Dec 2006
Posts: 18
89 t-birdsc stumbles w/ boost

hello everyone, looking for some ideas, took out some standard plugs and popped in the platinums, now w/ boost it stumbles, pings surges, you name it, ran fine with the regular plugs, make sense to any one or am i crazy?
falconetti is offline  
Sponsored Links
Advertisement
 
post #2 of 13 (permalink) Old 12-17-2006, 02:00 PM
 
Join Date: Nov 2006
Posts: 328
Did you remove anything to install the plugs?
birds4us is offline  
post #3 of 13 (permalink) Old 12-17-2006, 04:53 PM
5th Gear Poster
 
JMags's Avatar
 
Join Date: Dec 2005
Location: Norristown, PA
Age: 36
Posts: 431
IIRC you have to remove the intercooler tubes to change the plugs on an SC, so how well did you reseal them? Boost leaks would cause those types of problems.
JMags is offline  
Sponsored Links
Advertisement
 
post #4 of 13 (permalink) Old 12-17-2006, 06:23 PM
Veteran Poster
 
SplitPortBird's Avatar
 
Join Date: Jan 2003
Location: Merrillville, IN
Age: 43
Posts: 718
Send a message via AIM to SplitPortBird
Sounds like the spark gap is too big and causing spark blowout. maybe time for a better coil and check those gaps
SplitPortBird is offline  
post #5 of 13 (permalink) Old 12-17-2006, 06:50 PM Thread Starter
 
Join Date: Dec 2006
Posts: 18
thanks for helping guys, everything is sealed up, as for the plugs they were pre-gapped and i was under the impression that you should not mess w/ the gap on platinum plugs i pulled 3 of the 6 and they look good. i just got back from a drve here are the exact symptoms

cold start ok

hot start takes about 15 secs to fire

drives ok with no boost

the more boost the worse it gets

wot total bog down


maybe spark blow out, anyone think it may be fuel, dirty mass air sensor???
falconetti is offline  
post #6 of 13 (permalink) Old 12-17-2006, 06:51 PM Thread Starter
 
Join Date: Dec 2006
Posts: 18
Quote:
Originally Posted by SplitPortBird
Sounds like the spark gap is too big and causing spark blowout. maybe time for a better coil and check those gaps

coil and control module are new, as are most of the sensors, symptoms were the same before they were changed
falconetti is offline  
post #7 of 13 (permalink) Old 12-17-2006, 07:16 PM
Veteran Poster
 
SplitPortBird's Avatar
 
Join Date: Jan 2003
Location: Merrillville, IN
Age: 43
Posts: 718
Send a message via AIM to SplitPortBird
whats odd is the 15sec to restart when warm, sounds like a leaking FP regulator.

spark plugs do not arrived pre gapped. you said you check em for gap or just look?
SplitPortBird is offline  
post #8 of 13 (permalink) Old 12-17-2006, 07:30 PM Thread Starter
 
Join Date: Dec 2006
Posts: 18
Quote:
Originally Posted by SplitPortBird
whats odd is the 15sec to restart when warm, sounds like a leaking FP regulator.

spark plugs do not arrived pre gapped. you said you check em for gap or just look?

did not check gap just for good burn on plug what is gap for this car?
falconetti is offline  
post #9 of 13 (permalink) Old 12-17-2006, 08:00 PM
Moderator
Iowa Chapter Director
Uber Luber
TCCoAAC Member
Moderator
 
Thomas's Avatar
 
Join Date: Jul 2002
Location: Ames, Iowa
Age: 35
Posts: 8,978
not all platinums come pre-gapped, check the box they came in, it will tell you.
-Thomas

1988 Notch Mustang: - 438W, direct port n2o, t56
2003 SVT Focus: - SCT X3 tuner
Thomas is offline  
post #10 of 13 (permalink) Old 12-17-2006, 08:33 PM Thread Starter
 
Join Date: Dec 2006
Posts: 18
Quote:
Originally Posted by Thomas
not all platinums come pre-gapped, check the box they came in, it will tell you.
-Thomas

dont really know why i listened to the guy, it says on the box to properly gap first
falconetti is offline  
post #11 of 13 (permalink) Old 12-17-2006, 08:55 PM
Veteran Poster
 
SplitPortBird's Avatar
 
Join Date: Jan 2003
Location: Merrillville, IN
Age: 43
Posts: 718
Send a message via AIM to SplitPortBird
I had huge probs on my Mustang with a vortech,, mind you I was pushing 590+HP with the stock ignition (yes its possible) BUT I had to gap the plugs down to .29 and was running 15lbs boost.

if i tried .32 on the plugs it wouldnt move under boost.

your, hard start problem doesnt suggest plug gap though.

Brad
SplitPortBird is offline  
post #12 of 13 (permalink) Old 12-17-2006, 09:08 PM Thread Starter
 
Join Date: Dec 2006
Posts: 18
ill deal w/ that next, first ill check the gap. just having it run smooth would be nice
falconetti is offline  
post #13 of 13 (permalink) Old 12-20-2006, 05:11 AM Thread Starter
 
Join Date: Dec 2006
Posts: 18
ended up just taking out the motorcraft plugs and putting the autolites back in, runs fine
falconetti is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TCCoA Forums forums, you must first register.
Please enter your desired user 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:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome