Mazda Rotary Club

General => General Technical => Topic started by: franky on November 23, 2009, 01:52:00 PM

Title: i hate mots help please
Post by: franky on November 23, 2009, 01:52:00 PM
just had another mot after fixing the bits that it failed on last time lol, im running e85 to get it through the mot but the co2 was still to high i havent had the fuel in long only put it in before the mot and only ran the car up the road and to the mot place so thinging its not in the system fully yet???

And at the worse timeing my 4w abs light decide to come on duing the mot test what are the odds, what does this mean??? and what do i need to check the guy thought something may of come loose while he was checking the wheels?  

greatfull for all help
Title: i hate mots help please
Post by: jackaleks on November 23, 2009, 04:04:33 PM
i\'m not too sure about e85, but on 99ron you\'ll never get an rx7 through the standard MOT. what year is the car? if it\'s pre 1995 it has to be tested as a non-cat test.
Title: i hate mots help please
Post by: HaywardRotary on November 23, 2009, 04:26:35 PM
give me a call.
Regards
Carl
Title: i hate mots help please
Post by: franky on November 23, 2009, 05:09:44 PM
sorted everything part from the emmisions dam it, here are my readings

first time it failed

co2 should be 3.50% i got 5.57%
hc   should be 1200ppm i got 1325ppm

put it through for a new test today and got

co2 4.44% fail
hc   0945ppm so pass

so the e85 fuel has bought it down, if i put more in will it clear i read about the e85 on here somewhere but cant find it now any1 else done this?

Carl i emailed you awhile ago about a service and stuff if i can get it moted on the retest i will be booking up with u soon, any ideas how to bring it down another 1.00%???
Title: i hate mots help please
Post by: HaywardRotary on November 23, 2009, 05:27:22 PM
Does it have a cat?
Is it on a power FC?
Does it have an airpump?
Regards
Carl
Title: i hate mots help please
Post by: franky on November 23, 2009, 05:41:01 PM
yea standard cat replace last year for it mot
has a air pump
and is not on a power fc

its a 93 with a standard engine
Title: i hate mots help please
Post by: HaywardRotary on November 23, 2009, 06:45:23 PM
Quote from: franky;655821yea standard cat replace last year for it mot
has a air pump
and is not on a power fc

its a 93 with a standard engine

It should go through but the airpump may have been disconnected electrically,check the grey plug,the readinsg are way to high for the setup you have.Also if pump is working(Clutch on front engaging)which it should do just off idle up to 3000rpm then cat maybe bad.
Regards
Carl
Title: i hate mots help please
Post by: m1tch on November 23, 2009, 08:05:03 PM
My FC running a chipped ECU and an air pump gave a reading of 0.45%CO, so there must be something up lol
Title: i hate mots help please
Post by: franky on November 23, 2009, 09:03:58 PM
Quote from: HaywardRotary;655833It should go through but the airpump may have been disconnected electrically,check the grey plug,the readinsg are way to high for the setup you have.Also if pump is working(Clutch on front engaging)which it should do just off idle up to 3000rpm then cat maybe bad.
Regards
Carl

i\'ll check the pump 2mo then, its running rich ould that kill my cat? i thought it could be how much would a cat be?
Title: i hate mots help please
Post by: m1tch on November 23, 2009, 09:07:44 PM
Quote from: franky;655866i\'ll check the pump 2mo then, its running rich ould that kill my cat? i thought it could be how much would a cat be?

Unburnt fuel will kill the cat yes, mine passed with the CO of 0.45% with only the air pump, mines decatted :)
Title: i hate mots help please
Post by: philiwily on November 23, 2009, 09:20:14 PM
A new set of plugs wont go a miss if you haven\'t replaced them lately. I have a spare cat kicking about but you might get one a bit more local.
Phil
Title: i hate mots help please
Post by: franky on November 24, 2009, 11:39:41 AM
Quote from: HaywardRotary;655833It should go through but the airpump may have been disconnected electrically,check the grey plug,the readinsg are way to high for the setup you have.Also if pump is working(Clutch on front engaging)which it should do just off idle up to 3000rpm then cat maybe bad.
Regards
Carl

checked the air pump everything seems fine i can here the clutch engaging around 3000rpm so guess its the cat

how much u want for for cat posted philiwily??
Title: i hate mots help please
Post by: HaywardRotary on November 24, 2009, 12:25:01 PM
Airpump Clutch should disengage at 3000rpm,it should be engaged below that.
Is O2 sensor connected?
Regards
Carl
Title: i hate mots help please
Post by: franky on November 24, 2009, 02:59:41 PM
where is the 02 sensor?
Title: i hate mots help please
Post by: HaywardRotary on November 24, 2009, 03:19:35 PM
Quote from: franky;656044where is the 02 sensor?

In the exhaust downpipe,it is a sensor with one black wire coming from it that goes to behind the plenum.
Title: i hate mots help please
Post by: franky on November 24, 2009, 04:20:26 PM
yea thats conected to
Title: i hate mots help please
Post by: barry798 on November 24, 2009, 07:37:30 PM
if you dont have any luck m8t will give you a phone number of a place i use then when it passes get it up to carls place
Title: i hate mots help please
Post by: mikeyrx7 on December 03, 2009, 06:53:38 PM
i am a mot tester and what ever car/import it is still has to comply with this country, unless you have a letter from the manufacturer stating it has a different engine to its original spec ? lucky for me i can pass it !!!!!!! ha ha