go-NATs Posted January 9, 2006 Share Posted January 9, 2006 I just had my Supra in the shop for an MOT. Since it's Japanese spec, I was told that the emissions data is what failed it. :thumbdown According to the inspector, the exhaust levels acceptable in the UK are rated at 0.3! My car registered a whopping 10.3 with the exhaust being 'too rich' as he put it! I'm not even sure what this number means. Anyway, he's taking the car to another garage that specializes in Japanese cars to see if the rating is acceptable for the import J-Spec Supra. Has anyone ever failed an MOT after doing engine modifications? The engine is from an Aristo and I told the mechanic in Japan to leave the catalytic converter on until I get it MOT'd! He badly wanted to take it off! I'll probably have it removed afterwards. Any help greatly appreciated! go-NATS Quote Link to comment Share on other sites More sharing options...
BURT Posted January 9, 2006 Share Posted January 9, 2006 sorry about the news, just had my supe mot'd, 1994 j-spec witout cats it passed the emmisions test!! pre 95 j-spec cars dont need the cats for emmisions, i believe it only applies to 95 onwards. your car should have passed fella Quote Link to comment Share on other sites More sharing options...
heckler Posted January 9, 2006 Share Posted January 9, 2006 sorry about the news, just had my supe mot'd, 1994 j-spec witout cats it passed the emmisions test!! pre 95 j-spec cars dont need the cats for emmisions, i believe it only applies to 95 onwards. your car should have passed fella is this in writing anywhere? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 9, 2006 Share Posted January 9, 2006 It is indeed, have fun: http://www.motuk.co.uk/manual_730.htm Quote Link to comment Share on other sites More sharing options...
merckx Posted January 9, 2006 Share Posted January 9, 2006 If you're running really rich, it's more than likely your oxygen sensor. 0.3 % vol is your max carbon monoxide. You say your level went up to 10.3%, mine was 9.4 % and it failed the MOT aswell. I replaced the oxygen sensor and it passed. Quote Link to comment Share on other sites More sharing options...
heckler Posted January 9, 2006 Share Posted January 9, 2006 It is indeed, have fun: http://www.motuk.co.uk/manual_730.htm HA! if i have a letter?!? - oh well... Quote Link to comment Share on other sites More sharing options...
BURT Posted January 9, 2006 Share Posted January 9, 2006 not that i,m aware of, thats just what i was told fella.... Quote Link to comment Share on other sites More sharing options...
heckler Posted January 9, 2006 Share Posted January 9, 2006 not that i,m aware of, thats just what i was told fella.... i wish the MOT tester would listen to me! Quote Link to comment Share on other sites More sharing options...
BURT Posted January 9, 2006 Share Posted January 9, 2006 Shout Louder!! Quote Link to comment Share on other sites More sharing options...
JamesG Posted January 9, 2006 Share Posted January 9, 2006 It is indeed, have fun: http://www.motuk.co.uk/manual_730.htm I'm not sure that's the current regulations (it says June 2002 at the bottom). My local garage has passed my 1994 supra with no cats for three years in a row. But the last time I went, the guy said that next year it would have to be subject to the full cat test. I think this ties in with the new systems all the MOT station are meant to be getting. Quote Link to comment Share on other sites More sharing options...
jamesmark Posted January 9, 2006 Share Posted January 9, 2006 just had my 94" auto mot'd and it has both cats still on (just bought it) and it passed but asked the guy that tested it about the emissions and he said that my car can have both removed and will still pass as does not need to pass the emissions test there is a seperate one unless 10+ is far tomuch for any road car i think the guy is having you on Quote Link to comment Share on other sites More sharing options...
veilsideTT Posted January 9, 2006 Share Posted January 9, 2006 cant you slip him a crisp 50! or come down my end, i know a guy who knows a guy Quote Link to comment Share on other sites More sharing options...
GazzaGSi Posted January 9, 2006 Share Posted January 9, 2006 sorry to hear that mate, do not know what to suggest but I had a emmisions test 2 days ago and it came out at 0.2% with one cat removed. Gaz Quote Link to comment Share on other sites More sharing options...
go-NATs Posted January 9, 2006 Author Share Posted January 9, 2006 I'm thinking the oxygen sensor may have to be replaced! Darn' it! I'll see if the Japanese spec-car guy can give me a better 'score'. If Supra's are passing MOT's with CATS removed, I guess it's a win-win situation! More power & it's legal. Most MOT shops make it sound like it's a bad thing to remove your catalytic converter! I guess it's not so bad after all. go-NATS Quote Link to comment Share on other sites More sharing options...
go-NATs Posted January 10, 2006 Author Share Posted January 10, 2006 I found out today that my Lambda sensor has gone bad! It's being replaced for about 70 pounds! The engine should be running fine after that. The mechanic wasn't the type that would take a cool 50 pound note either! go-NATS! Quote Link to comment Share on other sites More sharing options...
Lucifer Posted January 10, 2006 Share Posted January 10, 2006 I found out today that my Lambda sensor has gone bad! It's being replaced for about 70 pounds! The engine should be running fine after that. The mechanic wasn't the type that would take a cool 50 pound note either! go-NATS! You wouldnt want to not replace the lambda sensor tho. Quote Link to comment Share on other sites More sharing options...
terribleturner Posted January 10, 2006 Share Posted January 10, 2006 I'm not sure that's the current regulations (it says June 2002 at the bottom). My local garage has passed my 1994 supra with no cats for three years in a row. But the last time I went, the guy said that next year it would have to be subject to the full cat test. I think this ties in with the new systems all the MOT station are meant to be getting. It's an odd one, my 94 TT J-Spec didn't pass with both cats out on the new system, but there are several members on here who said that they din't even have to have a cat test on cars ages 93/94/95. Quote Link to comment Share on other sites More sharing options...
MaveriK Posted January 10, 2006 Share Posted January 10, 2006 I am sooo confused!! Quote Link to comment Share on other sites More sharing options...
garethr Posted January 10, 2006 Share Posted January 10, 2006 Maybe there's confusion between UK cars and imports? A '93+ UK car would definitely have to go through the cat test. Quote Link to comment Share on other sites More sharing options...
TT-DEK Posted January 10, 2006 Share Posted January 10, 2006 If my supra is running really rich, would this account for the white smoke on start up ?? Quote Link to comment Share on other sites More sharing options...
SUPRALOOPY Posted January 10, 2006 Share Posted January 10, 2006 any thing after 92 has to have a full cat test...there is a flow chart we were sent when we were fighting this... i'll see if i can find it..sorry chaps:scare: Quote Link to comment Share on other sites More sharing options...
TT-DEK Posted January 10, 2006 Share Posted January 10, 2006 If my supra is running really rich, would this account for the white smoke on start up ?? Quote Link to comment Share on other sites More sharing options...
heckler Posted January 10, 2006 Share Posted January 10, 2006 If my supra is running really rich, would this account for the white smoke on start up ?? nope - thats just condensation. its black/grey smoke for running rich Quote Link to comment Share on other sites More sharing options...
LeeT Posted January 10, 2006 Share Posted January 10, 2006 If my supra is running really rich, would this account for the white smoke on start up ?? no, running rich equals black smoke Quote Link to comment Share on other sites More sharing options...
Lucifer Posted January 10, 2006 Share Posted January 10, 2006 Usual Valve stem seals I would think. Quote Link to comment Share on other sites More sharing options...
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