ewizzy Posted February 4, 2005 Share Posted February 4, 2005 Right, the exact problem i am experiencing is this: If I just gently accelarate up to 6800 or thereabouts, I have no problem, and its nice and smooth all the way. However, If I accelerate with WOT then I get to about 3500k - 4000k revs and it starts hesitating, still accelerating, but kind of holding back then letting go, but mostly holding back. unfortunately, I dont have a boost guage yet, but both CATS are in place and the only engine mods are a SARD cat back exhaust Just wondering what can cause this, I have searched and the conclusion I have come to is that its either plugs (I havent touched them since it was imported for me from Japan) Coil packs (hope not as I'm spent up this month), or FCD From my searches, If its Fuel Cut, then its quite violent and the dash will light up like a christmas tree, and I will hit my head on the windscreen Plugs and coil packs cause similar problem, but no xmas tree lights and not as violent engine cut. Can anyone add any other possible problems that it could be? or substanciate what I have found in the search engine..... Thanks in advance for any insight into this.... Alex Link to comment Share on other sites More sharing options...
Homer Posted February 4, 2005 Share Posted February 4, 2005 Mine did exactly the same (although after a decat), turned out to be wrongly gapped plugs. Its worth changing them even if its just to eliminate them as the cause, NGK's (can't recall the exact code) are only about £15 for a set. Link to comment Share on other sites More sharing options...
merckx Posted February 4, 2005 Share Posted February 4, 2005 More than likely the plugs. Link to comment Share on other sites More sharing options...
hadyn Posted February 4, 2005 Share Posted February 4, 2005 yep sounds like plugs, if a coil pack goes down you'll be down on power all the time and the engine not will change too as you run on 5 rather than 6 could also be the fuel pump on the way out, but in my limited experience of supes, you dont hear of that happening much on this board Link to comment Share on other sites More sharing options...
Jake Posted February 4, 2005 Share Posted February 4, 2005 NGK BCPR7ES £10.90 for 6 from my local motor factors Link to comment Share on other sites More sharing options...
hadyn Posted February 4, 2005 Share Posted February 4, 2005 gap them to 1.1mm too Link to comment Share on other sites More sharing options...
chris burford Posted February 4, 2005 Share Posted February 4, 2005 Ewizzy I Had The Same Problem On My Uk Supe Turned Out To Be Plugs Try That First Its The Cheapest Option I Learnt The Hard Way, As I Listened To A Toyota Dealers Who Obviously Didnt Know Shit Link to comment Share on other sites More sharing options...
dude Posted February 4, 2005 Share Posted February 4, 2005 Plugs or fuel filter !!! Dude Link to comment Share on other sites More sharing options...
ewizzy Posted February 4, 2005 Author Share Posted February 4, 2005 Right, off to Part Co. it is with me in the morning then! Thankyou very much for your input, I'll let you all know how I get on Alex Link to comment Share on other sites More sharing options...
The Hornet Posted February 5, 2005 Share Posted February 5, 2005 I had same problem once, changed the plugs and still was there, it turned out to be 2 coil packs on there way out but not fully gone, had them changed under warranty though and all was back to normal Link to comment Share on other sites More sharing options...
Nic Posted February 5, 2005 Share Posted February 5, 2005 Definitely sounds like plugs. When you change the plugs also check the condition of the plastic connectors between the ht leads and coil pack, these get very brittle over time and break which can cause a bad connection. Link to comment Share on other sites More sharing options...
TLicense Posted February 5, 2005 Share Posted February 5, 2005 In fact go and buy some of those connectors anyway. If they're not broken now, it's just a matter of time, and they're like a quid something each. My local Toyota dealer got a set in next day. If you do a search, I posted up the part numbers. Link to comment Share on other sites More sharing options...
Getrag Posted February 5, 2005 Share Posted February 5, 2005 I had the same. old plugs gapped to 1.1 Changed them for the NGK coppers gapped to 0.8 and it felt like a different car = huge grins Link to comment Share on other sites More sharing options...
ewizzy Posted February 5, 2005 Author Share Posted February 5, 2005 Well, today I had every intention of going and getting some new plugs and sticking them in Then the missus, wanted the stereo in first, so off I toddled, having bought all the stuff neededlast weekend anyway....I thought it would be a 5 - 10 min job ................... 7 Hours later, 3 severe cuts to the knuckles, an aching shoulder, artheritis in my pointing finger on my right hand playing up. 15 mkivsupra.net searches, all is now done......... I will now be going to Halfrauds to get ripped off and get some plugs for the Supra tomorrow (Sunday) :flame Dev Hopefully, I can post up my results after I will do a search for those connector part numbers too, and get some ordered up, may as well if they are cheap enough! Thanks again for all your help, lets hope it works tomorrow! Alex Link to comment Share on other sites More sharing options...
hadyn Posted February 5, 2005 Share Posted February 5, 2005 yea i need the part number for one of the connectors to the coil packs as one of mine crumbled away last weekend when i changed the plugs....... hope the plug change goes well for you ewizzy - took me about 4 hours to get seized bolts out!!!! Link to comment Share on other sites More sharing options...
Jake Posted February 5, 2005 Share Posted February 5, 2005 I did the plugs on my VVTi this afternoon. Hardest part was getting the breather pipes back on. Getting to the bolt for the rearmost coil pack is a PitA too. Do Halfords sell NGK BCPR7ES plugs? Link to comment Share on other sites More sharing options...
dude Posted February 5, 2005 Share Posted February 5, 2005 I have the plugs at work , you can phone for the part number , Jake is right order 2 new breather pipes for between the cam covers as well . Dude Link to comment Share on other sites More sharing options...
ewizzy Posted February 5, 2005 Author Share Posted February 5, 2005 I have the plugs at work , you can phone for the part number , Jake is right order 2 new breather pipes for between the cam covers as well . Dude Depending on how I get on tomorrow then, you might be getting a call on monday then! :littled: Link to comment Share on other sites More sharing options...
hadyn Posted February 5, 2005 Share Posted February 5, 2005 Do Halfords sell NGK BCPR7ES plugs? yep Link to comment Share on other sites More sharing options...
Markie Posted February 6, 2005 Share Posted February 6, 2005 Did I not read it right? Excuse the incompetance and spelling ;-) What is WOT? Link to comment Share on other sites More sharing options...
Nic Posted February 6, 2005 Share Posted February 6, 2005 Did I not read it right? Excuse the incompetance and spelling ;-) What is WOT? Wide Open Throttle Link to comment Share on other sites More sharing options...
ewizzy Posted February 6, 2005 Author Share Posted February 6, 2005 Its bloody raining now Someone doesnt want me to get these plugs changed Link to comment Share on other sites More sharing options...
ewizzy Posted February 6, 2005 Author Share Posted February 6, 2005 Oh god........I cant believe how dumb I am............ I just remembered, last week, I washed the car, and in my wisdom, bought some engine bay degreaser.......Covered up all the electrical bits with plastic bags, made sure I followed the instructions to the letter, warming the engine first etc, washing the stuff off, then running the engine till its dry........ What I didnt do is worry about getting the water over the cam valley. Reading this post has made me think that I have actually just got water (probably in the coil packs) Will this do any long term damage? or if I go and dry it, and run the engine for a couple of hours with the middle cover bit off will that fix it I might go and try this first before I get some plugs....... Link to comment Share on other sites More sharing options...
Nic Posted February 6, 2005 Share Posted February 6, 2005 What I didnt do is worry about getting the water over the cam valley. Reading this post has made me think that I have actually just got water (probably in the coil packs) Will this do any long term damage?....... ....the water could leak past the plugs into the cylinder..... runs off to get coat quickly Link to comment Share on other sites More sharing options...
ewizzy Posted February 6, 2005 Author Share Posted February 6, 2005 ....the water could leak past the plugs into the cylinder..... runs off to get coat quickly Ewizzy - Runs to get hair dryer, tools and a big fluffy towel!!! Link to comment Share on other sites More sharing options...
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