Mazda Rotary Club

Cars by Model Type => 3rd generation RX-7's => Topic started by: JamietypeR on March 21, 2010, 06:20:12 PM

Title: redlined loss of boost
Post by: JamietypeR on March 21, 2010, 06:20:12 PM
hi guys took my mazda out for a spin today, temp was normal 85c, was on a long straight at the bottom of my garden................. and was going thru my gears redlined it in third gear as i was about to take it back and park it up for a couple of days,  and after lost boost if i put my foot down i get no power, and temp went up to 105c, any advice would be much appreciated.
Title: redlined loss of boost
Post by: ashc on March 21, 2010, 08:15:41 PM
popped a hose clamp off intercooler?
Title: redlined loss of boost
Post by: rx7boy on March 21, 2010, 08:23:05 PM
as above : Check all silicone couplers on your intercooler setup one could have split or come loose,

Whats the spec of the car so we can give you better info?
Title: redlined loss of boost
Post by: JamietypeR on March 21, 2010, 08:54:26 PM
Cool I didn\'t even think of checking the intercooler, it\'s running apexi ecu decat pipe and apexi exhaust.
Title: redlined loss of boost
Post by: JamietypeR on March 21, 2010, 10:36:42 PM
Jus checked the intercooler and can\'t see anything loose or off and theres a really strong smell of fuel when driven?
Title: redlined loss of boost
Post by: m1tch on March 21, 2010, 10:47:08 PM
Could maybe by the OEM wastegate actuator giving up and letting the wastegate open at high gas flow like mine does, whats the boost set to?
Title: redlined loss of boost
Post by: JamietypeR on March 21, 2010, 10:51:51 PM
Er!? Not sure dude, I haven\'t reached more then 8.2 bar boost so I\'m guessing around there.
Title: redlined loss of boost
Post by: rx7boy on March 21, 2010, 10:55:06 PM
If there is a really strong fuel smell then I wouldnt drive it if I was u, last thing you want is it to be a ball of flames.

On your apexi comander, do a sensor check and see if any are out, only other thing it could be is a rats nest soleniod, thats where my knowledge runs out as ive never had a car with it.
Title: redlined loss of boost
Post by: JamietypeR on March 22, 2010, 09:05:45 AM
All sensors are fine on the apexi, where\'s the solenoid for the rats nest located? Could the standard intercooler of popped?
Title: redlined loss of boost
Post by: chopper2k22 on March 22, 2010, 10:14:27 AM
Quote from: JamietypeR;680874Jus checked the intercooler and can\'t see anything loose or off and theres a really strong smell of fuel when driven?

Take the bottom hose off the IC and check it for spliting as they are known to split.
Also check the coupler by the Y pipe as these tend to go aswell
Title: redlined loss of boost
Post by: JamietypeR on March 22, 2010, 02:57:06 PM
Ok checked all the hoses that come off the intercooler n no splits, put it all back on and the second turbo kicks in ok but there\'s nearly no power from the first 1 on the apexi my highest point in boosting was +0.81 which I\'m guessing from the second turbo n the not the first
Title: redlined loss of boost
Post by: JamietypeR on March 22, 2010, 02:58:37 PM
Also my temp is going upto 98c is that normal?
Title: redlined loss of boost
Post by: G@NDY on March 22, 2010, 03:09:59 PM
High temps and no boost could also be a blocked cat. Ignore this however if you dont have one ;)
Title: redlined loss of boost
Post by: JamietypeR on March 22, 2010, 03:16:40 PM
Yea no cat dude it\'s straight thru
Title: redlined loss of boost
Post by: rx7boy on March 22, 2010, 04:55:20 PM
Have you checked your coolant level, if its low that will be the reason for high temps,

Sounds like a rats nest issue, cause if the second turbo is coming on then its most likely a solenoid
Title: redlined loss of boost
Post by: HK FD3S on March 22, 2010, 05:00:39 PM
(http://mazdarotaryclub.com/forums/attachment.php?attachmentid=9467&d=1110880632)
Title: redlined loss of boost
Post by: JamietypeR on March 22, 2010, 06:46:28 PM
The coolent level is fine, I\'ll take the plenum off tomorrow and have a look at the rats nest, rob what pic was u trying to upload?
Title: redlined loss of boost
Post by: HK FD3S on March 23, 2010, 09:32:43 AM
(http://www.mazdarotaryclub.com/forums/attachment.php?attachmentid=32374&d=1184078149)
from here
http://www.mazdarotaryclub.com/forums/showthread.php?t=40399&highlight=rats
Title: redlined loss of boost
Post by: JamietypeR on March 23, 2010, 09:55:37 AM
Lol what am I meant to look at in that, it\'s a maze wow
Title: redlined loss of boost
Post by: HK FD3S on March 23, 2010, 10:02:25 AM
i would imagen you may want to check all pipes are securely on. Thats why most people remove the sequential setup or go single its a oppotunity to simply it or remove it.
Title: redlined loss of boost
Post by: JamietypeR on March 24, 2010, 10:00:42 AM
ok guys, i got the plenum off, and all pipes are fine under there cant see any problem.
Title: redlined loss of boost
Post by: chopper2k22 on March 24, 2010, 10:11:24 AM
If they look Ok then it could be a solenoid or check to see that the C clips are still in the right place on the actuators as these can move.
Title: redlined loss of boost
Post by: JamietypeR on March 24, 2010, 10:22:11 AM
not to sure what a c clip is? i did find a few things that looked like they have always been off but not sure if there ment to? (http://www.mazdarotaryclub.com/forums/C:%5C%5CDocuments%20and%20Settings%5C%5CJamie.HOME_PC%5C%5CDesktop%5C%5Ccar7.JPG) (http://www.mazdarotaryclub.com/forums/C:%5C%5CDocuments%20and%20Settings%5C%5CJamie.HOME_PC%5C%5CDesktop%5C%5Ccar6.JPG) (http://www.mazdarotaryclub.com/forums/C:%5C%5CDocuments%20and%20Settings%5C%5CJamie.HOME_PC%5C%5CDesktop%5C%5Ccar9.bmp)yellow arrows showing
Title: redlined loss of boost
Post by: HK FD3S on March 24, 2010, 10:55:36 AM
Pictures not showing
Title: redlined loss of boost
Post by: fil_auto on March 24, 2010, 11:01:52 AM
^^^^^^^^^^ - yep -sadly jamie has tried to link to an image on his desktop! ( Documents+Settings+Jamie+HOME+Desktop+car7 )!!!

That ain\'t gonna work bud - upload them somewhere like photbucket, then link to them...... ;)
That, or send them to someone who\'ll do it for you!!
ATB
Title: redlined loss of boost
Post by: JamietypeR on March 24, 2010, 11:08:20 AM
Lol cheers guys gimmie a sec and I\'ll get it sorted
Title: redlined loss of boost
Post by: HK FD3S on March 24, 2010, 11:22:18 AM
PICTURE A
(http://i205.photobucket.com/albums/bb11/renaultcollection/Misc/26514_405269855498_514920498_557440.jpg)

PICTURE B
(http://i205.photobucket.com/albums/bb11/renaultcollection/Misc/26514_405268970498_514920498_557439.jpg)

PICTURE C
(http://i205.photobucket.com/albums/bb11/renaultcollection/Misc/26514_405268900498_514920498_557439.jpg)
Title: redlined loss of boost
Post by: JamietypeR on March 25, 2010, 09:41:09 AM
In the last pic the 3 at the top I took off from the plenum but the others were already off/not connected to anything, I\'m stuck guys I\'ve put it all back together n now im getting boost but not as high as I normally do the 1st 1 doesn\'t feel as strong as the second turbo, and the exhaust note is different, I live in southeast London what\'s my best bet to take it sumwhere?