scott87 Posted September 28, 2012 Share Posted September 28, 2012 I finally got round to changing the plugs on my supra today and found that 1 was quite damp and the other very wet. It looked like fuel as opposed to oil and was very runny. This was just on two of the plugs, the worst being 4th plug (1 through 6 if your looking straight at the car from the front). The plugs were Denso ones and didn't look in the best shape, would a plug that isn't working as well allow for excess fuel to not be burnt off? On another note. Should a n/a make a "sucking" or "wooshing" type noise when you gun it? It almost sounds like my old turbo when it was spooling..... Quote Link to comment Share on other sites More sharing options...
Lude Posted September 29, 2012 Share Posted September 29, 2012 Wet plugs are ususlly car over fueling, not sure if a bad plug would remain wet or not. Quote Link to comment Share on other sites More sharing options...
Ian C Posted September 29, 2012 Share Posted September 29, 2012 Did you cold start the car to move it in order to work on it? If so, that would wet the plugs Quote Link to comment Share on other sites More sharing options...
scott87 Posted September 29, 2012 Author Share Posted September 29, 2012 No id been for a short drive in it before hand, a couple of miles. But yes it was cold start before that? My mpg does seem to be a bit low around town miles, fine on motorway.... Dont know if that helps. Quote Link to comment Share on other sites More sharing options...
Ian C Posted September 29, 2012 Share Posted September 29, 2012 Could be a duff O2 sensor then. Quote Link to comment Share on other sites More sharing options...
scott87 Posted September 29, 2012 Author Share Posted September 29, 2012 Ok thanks. Are there 2 on the car or just one? How much are they and can i use a generic one and remove the block connector off the current one use that? Quote Link to comment Share on other sites More sharing options...
Nic Posted September 29, 2012 Share Posted September 29, 2012 Ok thanks. Are there 2 on the car or just one? How much are they and can i use a generic one and remove the block connector off the current one use that? There are 2 oxygen sensors on an NA, I would use either genuine Toyota or Denso, if you do a search on here you'll find a lot of threads on the subject. Part number below. 89465-19615 Toyota Oxygen Sensor - 2JZ-GE x 2 You should do a diagnostic check to see if it is the O2 sensors, see guide HERE http://static.zooomr.com/images/9761176_06c815a7f7.jpg Quote Link to comment Share on other sites More sharing options...
scott87 Posted September 29, 2012 Author Share Posted September 29, 2012 Are the lamda sensors from the 2jzge in the lexus is300 suitable for the supra? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted September 29, 2012 Share Posted September 29, 2012 Could just as easily be a faulty ECU water temp sensor, fueling would be a default rich all the time, this would have just as much impact as a faulty lambda. Quote Link to comment Share on other sites More sharing options...
scott87 Posted September 29, 2012 Author Share Posted September 29, 2012 Could just as easily be a faulty ECU water temp sensor, fueling would be a default rich all the time, this would have just as much impact as a faulty lambda. Thanks just red a thread on this as well. Will look into it. The cars servicing before me looks a tad laxed so im guessing ill change all 3. Im struggling to find the lambda though. What model Denso do i need is it 2 x DOX 0228>? I would imagine both sensors should cost around £90 for the pair. Quote Link to comment Share on other sites More sharing options...
Dnk Posted September 29, 2012 Share Posted September 29, 2012 (edited) Wouldnt all the plugs be the same if it was fueling etc I'd be putting some new HT leads on it for starters if there the originals and a cap and rotor arm too. Edited September 29, 2012 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
scott87 Posted September 29, 2012 Author Share Posted September 29, 2012 (edited) Wouldnt all the plugs be the same if it was fueling etc I'd be putting some new HT leads on it for starters Ht leads looked in good nic, but i can change these too. But just trying to work out which sensors and wear to get them from. What are the part numbers of the rotor cap and leads? Edited September 29, 2012 by scott87 (see edit history) Quote Link to comment Share on other sites More sharing options...
scott87 Posted September 29, 2012 Author Share Posted September 29, 2012 Ok after loads of searching is this the correct Lambda? Denso 234 1055. Single wire single pin connector plug. Found on http://www.rockauto.co.uk/catalog/raframecatalog.php Quote Link to comment Share on other sites More sharing options...
Nic Posted September 29, 2012 Share Posted September 29, 2012 What are the part numbers of the rotor cap and leads? 19101-70020 Toyota Distributor Cap 19102-46011 Toyota Rotor Arm 90919-21521 Toyota HT Lead Set Quote Link to comment Share on other sites More sharing options...
scott87 Posted October 1, 2012 Author Share Posted October 1, 2012 Would these leads be ok? http://www.micksgarage.com/ProdDetails.aspx?pid=767685&AffiliateID=32475&utm_campaign=google_base&utm_medium=shop_channel&utm_source=google_base&utm_content=&utm_term= Quote Link to comment Share on other sites More sharing options...
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