Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: gja7 on September 24, 2004, 12:41:08 AM

Title: Exhaust Over Heating
Post by: gja7 on September 24, 2004, 12:41:08 AM
HI EVERYONE - AS U PROPABLY GUESSED I AM NEW .MY NAME IS GRAEME.CAN ANYONE HELP ME.I HAVE JUST IMPORTED AN 1993 RX7 AND DROVE IT HOME FROM NEWCASTLE TO INVERNESS IN SCOTLAND AND IT WAS RUNNING FINE.ONCE HOME I TRIED TO START IT AGAIN AND IT WOULDNT START.I THOUGHT IT WAS FLOODED SO MY MATE WHO IS A MECHANIC TRIED THE PLUGS OUT ETC TECHNIQUE BUT NOTHING SO WE TOWED IT AND AFTER ABOUT 1 MILE IT SLURTED IN2 LIVE WITH LOADS OF SMOKE EVERYWHERE .WE RAN IT FOR ABOUT A MILE BUT IT WAS RUNNING LIKE A BAG OF SH**E AND WOULD NOT BOOST PROPERLY AND KEPT BACKFIRING SPLUTERING AND KEPT WANTING TO DIE ON ME IF U DIDNT REV IT.I NOTICED THAT THE EXHAUST WARNING LIGHT CAME ON AFTER ABOUT 1/2 MILE SO WE TOOK IT STRAIGHT HOME.I THEN LOOKED UP THE EXHAUST PIPE .IT MUST  HAVE BEEN VERY HOT AS IT WAS GLOWING ORANGE ROUND ABUT THE MIDDLE.I THOUGHT IT MIGHT BE CAT RELATED BUT AS I HAVE NEVER OWNED ONE OF THESE RX7S I HAVENT A CLUE WHERE TO START.HHHHEEEELLLLPPPP !!!!!
Title: Exhaust Over Heating
Post by: iaint on September 24, 2004, 08:54:18 AM
I think the warning light you\'re referring to is the cat overheat light.  This would indicate that your cat as shuffled off it\'s mortal coil and might well be the cause of your problems.

Obviously a replacement cat is pretty pricey but a de-cat is a lot cheaper, if you de-cat you\'ll need to change to an aftermarket ecu and get it mapped...


Iain
Title: Exhaust Over Heating
Post by: davefrith on September 24, 2004, 08:56:42 AM
ye agreed, sounds like the cats had it
Title: Exhaust Over Heating
Post by: gja7 on September 25, 2004, 01:02:04 PM
THANKS FOR UR REPLYS,DO U THINK I WOULD BE BETTER JUST GETTING A BRAND NEW EXHAUST LIKE A HKS OR BLITZ.WOULD THAT SOLVE THE PROBLEM.I THINK IT IS AN AFTERMARKET EXHAUST ANYWAY BUT I HAVE NEVER HEARD OF IT(IT IS A ZIGEN).OR DO U THINK I WOULD BE BETTER JUST DE-CATING IT AND GETTING AN AFTERMARKET ECU.IF SO HOW DO U GO ABOUT DECATING IT AND GETTING A GOOD ECU AND SETTING IT UP PROPERLY . WHO IS THE BEST PEOPLE TO SEE ABOUT DOING THIS TYPE OF JOB ?
                                                              THANKS - GRAEME(gja7):bandit