cloudder

Hi, I thought I ought to say hello formally here as I've been chucking some questions on the forum recently. I'm Andy (tag 'Clouder') and I live down in Lyme Regis Dorset. I have owned my 1993 Supra NA Auto for 8 years. It's been a brilliant car for the last 7 and 3/4 years, but has now developed a BIG miss-fire! (see technical section to read about the issues). Was having big ideas about changing to an Aerotop, but after polishing her last week, and the fact she was running sweet, I decided against it ( plus you guys provided some insite into the guys I was going to see- and so I stayed home!). Anyway the cars paid me back for keeping her by craeting the BIG miss-fire again. If I can work out how to do it, I'll post some images of car. Cheers Clouder

Thanks Secondjump, I'll attampt a search here to see what I am up against. On another subject- what exactly does the Ignitor do? Is there a single diagram of where all the sensors are fitted on the N/A motor? Cheers

Thanks, I'll try this in the next few days.

Guys, Swapped out the plugs, coil and also did the fuel filter (as I had a new one) about a month ago and this seemed to cure the miss-fire. Due to being ill, I didn't get a chance to use the car for more than a few miles and things were 100% good to me. I even popped into my local garage (about 12 miles away as I live in the country) and they quickly did an emmisions test on it and all things are good. Anyway, came to drive the car today. Started fine, drove about 6 miles, perfect. Orange low fuel light comes on and I am already suspisious that the car is more thursty than usual perhaps. Within a mile, I kicked the auto down to pass another car, the engine stumbled big time and the main warning triangle comes on. Off throttle light goes off but for the next mile the car keeps going from normal, to miss-fire, sometimes to stalled! Luckly my parents house was now within about 1/4 mile so went there. In the drive I could get the engine to about 3900rpm sounding OK, but then a big missfire. Bugger. Also I noted that when coming off throttle, when the idle dropped below 1000rpm, the speedo shot up to about 30mph and then straight back to 0 ?!?!? Left her there over night. Went back this morning, so the car was cold, with 10 litres of unleaded. Fired her up straight away on the key, but it idled at 800rpm- no cold start sequence of 1500, 1200-1000 down to 750rpm, plus top speed is crawling pace? Any ideas??? HELP!!!

Hi, Can anyone tell me if I can buy a fault code reader to plug into my 1993 mk4 N/A Auto??

Guys, Swapped out the plugs, coil and also did the fuel filter (as I had a new one) about a month ago and this seemed to cure the miss-fire. Due to being ill, I didn't get a chance to use the car for more than a few miles and things were 100% good to me. I even popped into my local garage (about 12 miles away as I live in the country) and they quickly did an emmisions test on it and all things are good. Anyway, came to drive the car today. Started fine, drove about 6 miles, perfect. Orange low fuel light comes on and I am already suspisious that the car is more thursty than usual perhaps. Within a mile, I kicked the auto down to pass another car, the engine stumbled big time and the main warning triangle comes on. Off throttle light goes off but for the next mile the car keeps going from normal, to miss-fire, sometimes to stalled! Luckly my parents house was now within about 1/4 mile so went there. In the drive I could get the engine to about 3900rpm sounding OK, but then a big missfire. Bugger. Also I noted that when coming off throttle, when the idle dropped below 1000rpm, the speedo shot up to about 30mph and then straight back to 0 ?!?!? Left her there over night. Went back this morning, so the car was cold, with 10 litres of unleaded. Fired her up straight away on the key, but it idled at 800rpm- no cold start sequence of 1500, 1200-1000 down to 750rpm? Any ideas??? HELP!!!

Lukeboy2k, what was your reason for not buying? the guys or just not the right car?

Can anyone tell me if once a supra speedo is converted from Kilometers to miles, the distance recorded on the odometer after convertion is then miles, or does it still record in kilometers? Cheers

Hi, I'm looking to trade my Supra for another one. Looking on the net Trade Cars of High Wycombe or 'Bargain Cars Direct' seem to have a good range of cars. Has anyone had any dealings with these guys- are they good, bad.... any comments??? Cheers

Hi, Disconnected the hose, and yes the idle went up a bit, but still loads of black smoke from the exhaust when the throttle was blipped- and still no power?!?

Hi Miko, Thanks for the suggestion. Should I plug the end of the hose? Does the vacuum on the regulator increase the fuel pressure, hence the overfuelling?

Hi, Finally managed to get to do some work on the car today, but only managed to do the plugs. The old ones were black with soot, so in went the new ones, along with fresh oil and filter, plus new air filter. Started the car.... but still a missfire and absolutely NO POWER! The car won't even crawl up my drive! I also noted after managing to keep it running on a rough idle for about 4 minutes, when then blipping the throttle its like a rev limiter comes in at about 3900rpm. Once cool, I pulled a couple of the new plugs and again covered in thick black soot?! Would this suggest I have spark, but also an overfuelling? I hadn't run the car since Nov last year and that was just letting it tick over on the drive. My wife reminded me that the car ran out of petrol doing this. Once filling it back up with petrol, it was OK, I blasted it for a few miles and then put it away. It was then left until I tried starting it a few weeks back now with a miss-fire- hense the start of this thread. A mate thinks it could be a sticking injector?? Help Clouder:(

Got new plugs and stuff today- one stupid question before I start- where's the fuel filter fitted, is it up by the engine, or at the rear of the car???

Guys, Thanks for the responses. I'm going to order new plugs, leads, coil, fuel filter and pull the injectors for ultrasonic cleaning. A couple of questions, what is the procedure for getting to the injectors, plus where is the fuel filter fitted and whats the best way of getting it off? Cheers

I have to say not for some years., so I will do this. Would these cause a sudden miss-fire problem?

I have a Toyota Supra 3.0 Auto Non Turbo late 1993 MK4. I've owned it for 7 years of trouble free motoring as my second car. Going to my garage to start it last weekend, it fires up immediately by has absolutely no power? It idles OK(ish?), but as soon as the throttle is pressed it miss-fires and once in gear it can hardly give enough power to move out of the garage:(. Nothings been touched on the car sinse I last used it, I've used it sinse filling with petrol, so can't think it's comtaminated fuel? HELP!