RX-8 Discussion Discussion on Mazda's newest rotary powered vehicle.

Turbo Rx8 w/ hot start/idle issues

Thread Tools
 
Search this Thread
 
Old 08-07-2006, 04:24 PM
  #1  
Senior Member
Thread Starter
 
One320B's Avatar
 
Join Date: May 2005
Posts: 959
Default

Motor has about 40K on it... car runs GREAT when you start it up and drive around for a bit... but once the temps get up it wont hold an idle and has a hard time restarting... once restarted, again..it drives great.. pulls hard, runs a little rich but nothing too severe



It's running a microtech unit w/ the greddy turbo (no emanage)... i'm thinking it's something as simple as wrong temp plugs and they are getting fouled out after driving...



I'm not leaning towards low compression, but I'll take your thoughts. I'm going to be looking at the maps later today...
One320B is offline  
Old 08-07-2006, 05:14 PM
  #2  
Senior Member
Thread Starter
 
One320B's Avatar
 
Join Date: May 2005
Posts: 959
Default

Some other things that I think may be causing it... water temp maps too rich? I could probably also adjust the fuel enrichment under cranking...



I'm just throwing out ideas... anybody have a turbo rx8 here?
One320B is offline  
Old 08-08-2006, 07:51 AM
  #3  
Junior Member
 
misterwilson007's Avatar
 
Join Date: Dec 2004
Posts: 20
Default

what plugs are you running?
misterwilson007 is offline  
Old 08-08-2006, 10:04 AM
  #4  
Senior Member
Thread Starter
 
One320B's Avatar
 
Join Date: May 2005
Posts: 959
Default

I'm not 100% as it's not my car... a buddy of mine has it and brought it by.. i'm going to start tuning it some more, but i did ask them last night when the last time they put plugs in it was and i was told "oh, it needs new ones" .... so yea... i'm leaning towards getting that done first..
One320B is offline  
Old 08-08-2006, 10:26 AM
  #5  
Junior Member
 
misterwilson007's Avatar
 
Join Date: Dec 2004
Posts: 20
Default

I've heard of people resolving similiar issues on FI applications by changing all of the plugs to 9s...leading and trailing instead of 6 leading and 9 trailing.



Also, does the car have the updated starter? If not, that will make a huge difference. It spins the engine about 3X the speed of the orginal.



Hope this helps...
misterwilson007 is offline  
Old 08-14-2006, 10:41 PM
  #6  
Senior Member
 
guitarjunkie28's Avatar
 
Join Date: Aug 2004
Posts: 426
Default

probably just the correction maps, but lots of renesis motors have hot start problems anyway.
guitarjunkie28 is offline  
Old 08-15-2006, 01:25 PM
  #7  
Senior Member
Thread Starter
 
One320B's Avatar
 
Join Date: May 2005
Posts: 959
Default

Quickie update. The car is running NEW oem plugs, so I'm sure they are 6s & 9s... I will double check this this weekend. I made some data logs last night and the owner of the car should be sending them to me shortly to review.



It does not have the updated starter... that is one thing we kept bringing up as well. It doesn't idle when its hot and it doesnt start at all when hot unless you give it some gas while cranking...



We'll throw some plugs in it (all 9s) and then get the car to the dealership so they can throw the new starter in there and we'll see where we go from that point.



Thanks guys...
One320B is offline  
Old 09-01-2006, 02:25 AM
  #8  
Member
 
crispeed's Avatar
 
Join Date: Aug 2001
Location: Miami
Posts: 84
Default

Originally Posted by One320B' post='832900' date='Aug 15 2006, 10:25 AM

Quickie update. The car is running NEW oem plugs, so I'm sure they are 6s & 9s... I will double check this this weekend. I made some data logs last night and the owner of the car should be sending them to me shortly to review.



It does not have the updated starter... that is one thing we kept bringing up as well. It doesn't idle when its hot and it doesnt start at all when hot unless you give it some gas while cranking...



We'll throw some plugs in it (all 9s) and then get the car to the dealership so they can throw the new starter in there and we'll see where we go from that point.



Thanks guys...




Do a compression test once the motor is fully warmed up.

A lot of the rx-8's are having this exact problem.
crispeed is offline  
Old 09-08-2006, 06:54 PM
  #9  
Senior Member
 
sleeper7's Avatar
 
Join Date: Jun 2003
Location: San Antonio TX/Okinawa Japan
Posts: 208
Default

Name:  Picture.jpg
Views: 213
Size:  81.5 KB

just thought I would share. rx8 motors
sleeper7 is offline  
Old 09-12-2006, 03:08 AM
  #10  
Senior Member
 
ArmyOfOne's Avatar
 
Join Date: Oct 2003
Location: Fort Lewis Washington
Posts: 705
Default

That is one sweet pi. Now I wish I had those all lined up in my garage. lol.
ArmyOfOne is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Tomoya
2nd Generation Specific
8
05-23-2006 04:54 PM
MrSparkle
2nd Generation Specific
7
01-03-2004 02:24 PM
hcpcjj
2nd Generation Specific
17
11-10-2003 07:30 PM
j9fd3s
Insert BS here
33
06-26-2003 02:14 PM
fritzfry
3rd Generation Specific
13
05-20-2003 12:42 AM

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


Quick Reply: Turbo Rx8 w/ hot start/idle issues



All times are GMT -5. The time now is 06:09 PM.