Cannot use full throttle - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 04-02-2014, 10:11 AM   #1
Newb
Thread Starter
 
Join Date: Jun 2008
Posts: 4
Total Cats: 0
Default Cannot use full throttle

Have been having issues with my turbo charged miata. First it jumped 4teeth on the timing gear during a track event. Replaced timing belt, water pump, tensioner and spring. All went well for 3 run sessions then on the next session the car would not take anything over about 1/4 throttle without dropping power. It idles fine and I can drive it with very little throttle input but any increase throttle makes it like its flooding out. Tried to reset the ecu but no luck so I need any ideas on what to check next. Thanks in advance for any replies.
dsanto is offline   Reply With Quote
Old 04-02-2014, 10:34 AM   #2
Senior Member
iTrader: (3)
 
Join Date: Apr 2011
Location: Volo, IL
Posts: 1,247
Total Cats: 140
Default

Did you check the crank pulley and keyway? What year is your car?
dieselmiata is offline   Reply With Quote
Old 04-02-2014, 10:38 AM   #3
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 8,465
Total Cats: 784
Default

What ECU? What's your AFRs?
concealer404 is offline   Reply With Quote
Old 04-02-2014, 10:39 AM   #4
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,206
Total Cats: 2,587
Default

OP, you posted way too many details. You might wanna tone it down, we're overwhelmed with information we have to work with, it will take a long time to sort through all of it and then attempt to spoon feed you.

Reminds me of a conversation I had last night, when my sister in law called me:

"my car doesn't go over 35mph, do you know what's wrong with it?"
"no, bring it over and we will diagnose the problem"
"the problem is that the car won't go over 35mph, the tachometer goes up but the car doesn't go any faster, can you please just tell me what's wrong with it?"
"I can't diagnose a car over the phone with no information to go off"
"but I just gave you all the information"
18psi is offline   Reply With Quote
Old 04-02-2014, 10:42 AM   #5
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,793
Default

turbo + stock computer + no brain =
Braineack is offline   Reply With Quote
Old 04-02-2014, 10:43 AM   #6
"Quality" is my first name.
iTrader: (3)
 
Quality Control Bot's Avatar
 
Join Date: Dec 2007
Posts: 2,611
Total Cats: 69
Default

Quality Control Bot Activated.
Quality Control Bot is offline   Reply With Quote
Old 04-02-2014, 10:43 AM   #7
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,206
Total Cats: 2,587
Default

QC bot is quickly becoming my favorite member on this site
18psi is offline   Reply With Quote
Old 04-02-2014, 03:10 PM   #8
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,693
Total Cats: 1,562
Default

Wat?
sixshooter is online now   Reply With Quote
Old 04-02-2014, 06:32 PM   #9
Newb
Thread Starter
 
Join Date: Jun 2008
Posts: 4
Total Cats: 0
Default

1996 with FM2 kit and link system. Don't have wideband so can't give AFR's but they were set by Corky Bell last summer when it was dynoed.
dsanto is offline   Reply With Quote
Old 04-02-2014, 06:40 PM   #10
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 8,465
Total Cats: 784
Default

Well, that'd be the thing to check next. Your AFRs.


Or boost leak test it.... this thing still has a MAF, right?
concealer404 is offline   Reply With Quote
Old 04-02-2014, 10:16 PM   #11
Newb
Thread Starter
 
Join Date: Jun 2008
Posts: 4
Total Cats: 0
Default

Yes it has a maf
dsanto is offline   Reply With Quote
Old 04-02-2014, 10:17 PM   #12
Newb
Thread Starter
 
Join Date: Jun 2008
Posts: 4
Total Cats: 0
Default

How do I do a boost leak test?
dsanto is offline   Reply With Quote
Old 04-02-2014, 11:15 PM   #13
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 8,465
Total Cats: 784
Default

You search google for "boost leak tester."

Then you follow instructions.
concealer404 is offline   Reply With Quote
Old 04-03-2014, 12:00 PM   #14
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,693
Total Cats: 1,562
Default

Line up your timing marks and take a picture of it for us. It is REALLY common to be off a bit.
sixshooter is online now   Reply With Quote
Old 04-03-2014, 05:17 PM   #15
Senior Member
iTrader: (2)
 
Join Date: Mar 2014
Location: Meridian, Mississippi
Posts: 637
Total Cats: 42
Default

Look for the blown off intercooler pipe! Easy boost leak tester with this bad of a leak is the mark 1 eyeball. If the eyeball isn't enough grab the pipes and shake them around... the loose one is probably your problem

Keith
Twodoor is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1994 Spec Miata Race Car SM/SM2/SSM For Sale Quinn Cars for sale/trade 6 10-23-2016 08:58 AM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 AM
Another Alternator thread ihiryu General Miata Chat 9 09-28-2015 11:22 AM


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



All times are GMT -4. The time now is 09:13 AM.