mattysupra Posted October 27, 2007 Share Posted October 27, 2007 Took my supra tt out today for the first time in a month, When the second turbo came on boost i kept getting a heavy misfire along with big pops and bangs. Tried it a few times but it kept happening so turned around and stuck it back in the garage. It had a new stereo fitted in the week and the boost gauge re connected as not been connected for years ( me being lazy ) I tried to plug the car into the ecu reader but it wouldn't recognise the car. This might be because it is not a standard ecu (mines) and i have never needed or tried to plug it in before. Any ideas people?? Link to comment Share on other sites More sharing options...
Ric Posted October 27, 2007 Share Posted October 27, 2007 Missfire is usually down to plugs or a dodgy coil pack connector Link to comment Share on other sites More sharing options...
mattysupra Posted October 27, 2007 Author Share Posted October 27, 2007 Thanks for the reply but I have not long changed the plugs and had the coil packs tested due to another problem i was having when running more than 75 hp jets on the nitrous. Turns out these was not at fault before but lack of fuel pressure. Or so we think. Not tested nos since bigger fuel pump fitted. Wondering now if maybe the two problems are connected?? Does any one else have any other idea's? Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted October 27, 2007 Share Posted October 27, 2007 If its recently had the boost gauge reconnected, then i would look for a vac/pressure pipe thats not been reconnected or come loose, which could be affecting fuel pressure or the MAP sensor. Link to comment Share on other sites More sharing options...
mattysupra Posted October 27, 2007 Author Share Posted October 27, 2007 Cheers ric. This was the first thing i checked. Still hoping it is something simple like this tho! Link to comment Share on other sites More sharing options...
colsoop Posted October 27, 2007 Share Posted October 27, 2007 You don't need an ecu reader to check for an error code Link to comment Share on other sites More sharing options...
gaz1 Posted October 27, 2007 Share Posted October 27, 2007 sounds like a boost hose leaking mate;) if its only misssing on boost then check all your hoses (even the ones right at the back that are a barstuard to get to:() Link to comment Share on other sites More sharing options...
mattysupra Posted October 27, 2007 Author Share Posted October 27, 2007 its a bit more than a mis fire. Really harsh pops , bangs , fire out the exhaust etc. I tried to look at the boost when it did it and that seemed to be sat at about 1 bar but not on full boost( only about 4000 rpm) I have split boost pipes etc before and you can normally here the air leeking from them. I didn't hear this time as something i was listening for it. Link to comment Share on other sites More sharing options...
gaz1 Posted October 28, 2007 Share Posted October 28, 2007 its a bit more than a mis fire. Really harsh pops , bangs , fire out the exhaust etc. I tried to look at the boost when it did it and that seemed to be sat at about 1 bar but not on full boost( only about 4000 rpm) I have split boost pipes etc before and you can normally here the air leeking from them. I didn't hear this time as something i was listening for it. sounds like overfueling badly, mine,s ecu might need looking at Link to comment Share on other sites More sharing options...
hadyn Posted October 28, 2007 Share Posted October 28, 2007 yeah flamage is a classic sign of overfuelling Link to comment Share on other sites More sharing options...
mattysupra Posted October 28, 2007 Author Share Posted October 28, 2007 well guys and girls, thanks for the replies. I left the car over night and decided i would look at the problem today. Started the car up this morning and took it for a drive. Guess what....??? It has fixed itself. I have done 150 mile trip in it tonight and started of easy but give it a bit of welly on the way back down the motorway with no problems at all. Apart from when it decided to spin the wheels up at almost 100mph which left me fish tailing down the motorway with the front wheels in the middle lane and both rears in the outside lane There was also a smell of sh.t in the car after. (not sure if it was mine or the passengers) Any way all sorted !! And thanks everyone. Link to comment Share on other sites More sharing options...
Guest kwiktoy Posted October 30, 2007 Share Posted October 30, 2007 maybe something was damp and needed drying out. Glad it's fixed. Link to comment Share on other sites More sharing options...
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