Wonga Spar Posted October 30, 2016 Share Posted October 30, 2016 (edited) Hi fellas, Finally bought a Supra and on the test drive I didn't notice anything unusual, maybe I was a bit too nervous to hoon it, however on the way home quickly realised putting my foot deep into the accelerator produces an uncomfortable rattling sound. It's got a metallic twang to it and kinda sounds like a go-kart engine is strapped under the bonnet. Worth noting there's no obvious loss to performance (not that I'd know anyway). It's not RPM dependent as if I verrrry gradually build up the revs it doesn't come on, however putting the accelerator down an inch or so quite rapidly brings it on. From the reading so far it's apparently injectors (although can't rule out more.... uncomfortable problems). Inclined to think it's not a bearing as it doesn't do it when not accelerating. Guess the questions are does this sound like injectors, and what am I looking at to get this fixed? I'm borderline blithering-idiot mechanically (at the moment at least) and have no daylight hours in the week. Reckon I could drop it at the local garage or does this require somewhere more specialist? Thanks! Edit: It's '95 NA-5 Saw online somebody said carbon buildup? The car has covered 200 miles in the last year so maybe it has something to do with that? Edited October 30, 2016 by Wonga Spar (see edit history) Quote Link to comment Share on other sites More sharing options...
SupraLEDrears Posted October 30, 2016 Share Posted October 30, 2016 Can't say anything until you list na/tt/na-t, gearbox, etc. Quote Link to comment Share on other sites More sharing options...
David P Posted October 30, 2016 Share Posted October 30, 2016 Sounds like the pinging sound maybe coming from your wallet? Quote Link to comment Share on other sites More sharing options...
HELLBOY666 Posted October 30, 2016 Share Posted October 30, 2016 Have you had a poke around to see if anything is loose?? it could just be summit hitting a belt..... but it does sound like a bearing from the wheel area ! Is it from the front or back??? Quote Link to comment Share on other sites More sharing options...
HELLBOY666 Posted October 30, 2016 Share Posted October 30, 2016 Am I right in thinking if it was injectors you would be getting a sort of missfire feel to it ???? Quote Link to comment Share on other sites More sharing options...
stevie_b Posted October 30, 2016 Share Posted October 30, 2016 It's unlikely to be a gearbox problem - they're usually dependent on road and engine speed, not whether you're accelerating or not. A rattling sound (like ball bearings in a tin can) whilst accelerating can sometimes mean the engine is pinking. It's an unusual fault for a supra, but I guess it's possible to do in the hands of a bad mechanic. Quote Link to comment Share on other sites More sharing options...
Dnk Posted October 30, 2016 Share Posted October 30, 2016 (edited) Take it to a garage, its almost impossible to accurately diagnose from your description, or get a local member to have a listen to it if one is near you Can't see how it would be carbon build up if its only done 200 miles in the last year and does that give you pinging sounds, my car had 137,000 miles on it and no noises like that Edited October 30, 2016 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted October 30, 2016 Share Posted October 30, 2016 As said take it to a decent garage, its could be as simple as a heat shield or something else rattling, but at worst it could be det which will quickly kill the engine, so resist the urge to give it some beans until its been properly diagnosed. Quote Link to comment Share on other sites More sharing options...
Scooter Posted October 30, 2016 Share Posted October 30, 2016 Did you source/did the guy tell you where the exhaust leak is/was? It could just be that at low exhaust flow speed the gases flow the way they are meant to, when at higher speeds the gas is leaking from a joint/hole creating the noise. If you have a garage you know trust, or friends etc then sure pop it to them, if you don't and are using x y z garage for it then i'd do as much research and elimination of issues before you go to them. Injector problems on NA's are almost unheard of, you made it back to Somerset from kent and it recently passed an emissions MOT. Sounds like it's running/idling ok and so I'd be looking for rattles, loose exhaust shields the exhaust itself to start with. Take some pics, does it have both cats in place? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted October 30, 2016 Share Posted October 30, 2016 If its NA (haven't said) and its load related not revs related Ill say its pinking due to too much timing/shit fuel. Quote Link to comment Share on other sites More sharing options...
Dnk Posted October 30, 2016 Share Posted October 30, 2016 My guess is its this one the OP posted up in a previous thread and its only done 200 miles from the previous years mot http://www.ebay.co.uk/itm/Toyota-Supra-1995-3-0-Manual-NA-28767-Miles-/112178018932?hash=item1a1e54ba74%3Ag%3AC9wAAOSwal5YDLoC&nma=true&si=4%252BHP0ZaWwMpzpzFJUOHNqkUW5uY%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557 Quote Link to comment Share on other sites More sharing options...
Wonga Spar Posted October 30, 2016 Author Share Posted October 30, 2016 (edited) Sounds like the pinging sound maybe coming from your wallet? My wallet is definitely pinging. And will probably be pinging for the foreseeable future. Have you had a poke around to see if anything is loose?? it could just be summit hitting a belt..... but it does sound like a bearing from the wheel area ! Is it from the front or back??? /QUOTE] Not that easy as it doesn't do it when idling, I live in a very residential area so will have to take it out to the sticks to rev it, and don't really know anybody within a 100m radius of where I'm living to rev it for me. Am I right in thinking if it was injectors you would be getting a sort of missfire feel to it ???? I don't know what a missfire feels like, the power delivery is dead smooth, the noise just gets progressively louder, assume if it was this maybe delivery wouldn't be? Did you source/did the guy tell you where the exhaust leak is/was? It could just be that at low exhaust flow speed the gases flow the way they are meant to, when at higher speeds the gas is leaking from a joint/hole creating the noise. If you have a garage you know trust, or friends etc then sure pop it to them, if you don't and are using x y z garage for it then i'd do as much research and elimination of issues before you go to them. Injector problems on NA's are almost unheard of, you made it back to Somerset from kent and it recently passed an emissions MOT. Sounds like it's running/idling ok and so I'd be looking for rattles, loose exhaust shields the exhaust itself to start with. Take some pics, does it have both cats in place? Yes, between the headers and the first cat, I can't see or hear anything though. I'm a bit of a spaz, and wouldn't know where to begin diagnosing an exhaust rattling noise. Sadly don't know anybody in Bath. Hard to source because I can only hear it when driving. Will take some pics in an hour or so. My guess is its this one the OP posted up in a previous thread and its only done 200 miles from the previous years mot It is indeed. Still can't regret it yet as I knew it would have something wrong but I paid half of what I originally budgeted so I'm not that worried about indulging it a bit. Plus condition wise outside of this rattle it's genuinely immaculate and the paperwork shows the miles are legit until at least 2006. Although if it's the big ends or something I'll be eating these words.... (which it shouldn't be as it idles fine). Need to find a local mechanic that seems trustworthy, assume I should avoid big chains. Edited October 30, 2016 by Wonga Spar (see edit history) Quote Link to comment Share on other sites More sharing options...
Scooter Posted October 30, 2016 Share Posted October 30, 2016 you could try pulling up the diagnostic/error codes. The stock exhaust is not known for leaking at joints so you may need a manifold or first cat if they are cracked. Quote Link to comment Share on other sites More sharing options...
Annabella Posted October 30, 2016 Share Posted October 30, 2016 Could just easily be the knackered exhaust rattling, as that's what it failed on the last MOT. On a side, glad you got sorted at last! Hope you enjoy after initial issues. Quote Link to comment Share on other sites More sharing options...
David P Posted October 30, 2016 Share Posted October 30, 2016 How do you expect folks to help when you haven't even told us what engine it has? Quote Link to comment Share on other sites More sharing options...
Wonga Spar Posted October 30, 2016 Author Share Posted October 30, 2016 (edited) How do you expect folks to help when you haven't even told us what engine it has? Sorry, I edited my initial post after seeing your comment. It's a 95 NA-5. Could just easily be the knackered exhaust rattling, as that's what it failed on the last MOT. On a side, glad you got sorted at last! Hope you enjoy after initial issues. Thanks, me too! I hope so, just seems strange it does it so in sync with the engine, yet isn't RPM dependent (if that makes sense). Edited October 30, 2016 by Wonga Spar (see edit history) Quote Link to comment Share on other sites More sharing options...
SupraLEDrears Posted October 30, 2016 Share Posted October 30, 2016 If it's an na, it won't be injectors. Quote Link to comment Share on other sites More sharing options...
TwoSocks Posted October 30, 2016 Share Posted October 30, 2016 Ive had a similar issue on my NA 5, Took it down to see Moke2J and we was thinking gearbox mounts or somethinh along those lines iirc. Quote Link to comment Share on other sites More sharing options...
Wonga Spar Posted October 30, 2016 Author Share Posted October 30, 2016 Been reading all morning, very inclined to think it's predetonation/timing/fuel octane. A full service should tell me a lot and I guess once I've found a good mechanic I'll take it from there. Thanks fellas. Quote Link to comment Share on other sites More sharing options...
SupraLEDrears Posted October 30, 2016 Share Posted October 30, 2016 Been reading all morning, very inclined to think it's predetonation/timing/fuel octane. A full service should tell me a lot and I guess once I've found a good mechanic I'll take it from there. Thanks fellas. Good luck finding a mechanic with a timing light Quote Link to comment Share on other sites More sharing options...
Wonga Spar Posted October 30, 2016 Author Share Posted October 30, 2016 Good luck finding a mechanic with a timing light I'll look for a hairdresser with one then. Quote Link to comment Share on other sites More sharing options...
Wonga Spar Posted November 8, 2016 Author Share Posted November 8, 2016 Alright lads the jury's in. Crack in the exhaust just under the first cat. Getting a full exhaust system (with no cats) fitted from Longlife. Should have the problem fixed and other than that the car is apparently in great condition! Quote Link to comment Share on other sites More sharing options...
Annabella Posted November 8, 2016 Share Posted November 8, 2016 (edited) Not going to say told you so you do realise how loud double decat will be on a na.... Edited November 8, 2016 by Annabella (see edit history) Quote Link to comment Share on other sites More sharing options...
Tyson Posted November 8, 2016 Share Posted November 8, 2016 Alright lads the jury's in. Crack in the exhaust just under the first cat. Getting a full exhaust system (with no cats) fitted from Longlife. Should have the problem fixed and other than that the car is apparently in great condition! All your neighbours will hate you and your ears will bleed or you'll go insane from the unrelenting drone of the exhaust at any speed. Listen to one first and see if you can live with it ! Quote Link to comment Share on other sites More sharing options...
David P Posted November 9, 2016 Share Posted November 9, 2016 (edited) A 2 box system with 2.5" pipe sounds a treat with no cats, it's the 3" T.T. 1 box varieties that make your ears bleed. Edited November 9, 2016 by David P (see edit history) Quote Link to comment Share on other sites More sharing options...
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