monkey3 Posted November 17, 2005 Author Share Posted November 17, 2005 So, what's the deal for getting rid of nasty knocking noises? Assuming it's detonation Quote Link to comment Share on other sites More sharing options...
Guest chiefvinso Posted November 17, 2005 Share Posted November 17, 2005 If you have an aftermarket ecu then you could get it set up but I would assume there could be other factors to consider like injectors?? I would have thought that slight blockages or dirty fuel filter or fuel pump. Not to upto speed on if these could be factors. Have you tried running lower boost as I see you have a boost controller. Also what boost are you running? Quote Link to comment Share on other sites More sharing options...
monkey3 Posted November 17, 2005 Author Share Posted November 17, 2005 Runs at about a Bar. 1.03 at the most. I've tried turning the boost sontroller off completely, but it makes no difference. I am going to do a service at the end of the month and probably change the fuel filter, but it doesn't splutter or miss at all. Quote Link to comment Share on other sites More sharing options...
Guest chiefvinso Posted November 17, 2005 Share Posted November 17, 2005 Check your plugs to see if it is running lean. Quote Link to comment Share on other sites More sharing options...
monkey3 Posted November 17, 2005 Author Share Posted November 17, 2005 Ok, good idea. . . . What should they look like? Any colour pictures of a lean plug and a normal plug. Is it pink for lean? I can never remember. Quote Link to comment Share on other sites More sharing options...
Guest chiefvinso Posted November 17, 2005 Share Posted November 17, 2005 healthy plugs should be a dark grey, cant remember too lean but if you have a hayne manual hanging around for a different car it used to have the plug colours in the back and what they meant. Quote Link to comment Share on other sites More sharing options...
monkey3 Posted November 17, 2005 Author Share Posted November 17, 2005 will check as soon as I get home. Quote Link to comment Share on other sites More sharing options...
Guest chiefvinso Posted November 17, 2005 Share Posted November 17, 2005 or go online and see what haynes offers Quote Link to comment Share on other sites More sharing options...
monkey3 Posted November 17, 2005 Author Share Posted November 17, 2005 Found a very good page for spark plug colours and deposits... http://www.nightrider.com/biketech/spkplghnbook.htm Quote Link to comment Share on other sites More sharing options...
Guest chiefvinso Posted November 18, 2005 Share Posted November 18, 2005 Nice one, I also forgot to ask what your IC was like. I think if its efficiency drops the intake temps could rise which could cause detonation. Quote Link to comment Share on other sites More sharing options...
monkey3 Posted November 18, 2005 Author Share Posted November 18, 2005 Was discussing this with a friend of mine (who is quite a whizz with turbo'd cars) last night on the way to the supra meet in west london. And I think we've decided it can't really be detonation as I'm not putting it under enough stress. Also the noise doesn't change in pitch or frequency dependant on revs!?! It has a stock intercooler, but surely with the temperature the last couple of nights, the charge temp shouldn't be that high at all? I didn't have a chance to check the plugs last night, but I will do tonight. Quote Link to comment Share on other sites More sharing options...
Pete Posted November 18, 2005 Share Posted November 18, 2005 Also the noise doesn't change in pitch or frequency dependant on revs!?! This is the interesting bit isn't it? Quote Link to comment Share on other sites More sharing options...
monkey3 Posted November 18, 2005 Author Share Posted November 18, 2005 But what does it all mean? Could it be the first turbo giving up the ghost? Quote Link to comment Share on other sites More sharing options...
monkey3 Posted December 19, 2005 Author Share Posted December 19, 2005 OK, just had the inspiration to turn off the boost controller as the sound is coming roughly from the direction of the dual sbc box under the bonnet. When I say turn off, I mean turn back to factory boost rather than disconnect or anything. The noise stops!!! WOOHOO!!! (I think) Does anyone else have the blitz dual sbc boost controller, and if so does theirs make any noise? Do you think the solenoids are dying maybe? Would it be worth contacting blitz? if yes... why? Quote Link to comment Share on other sites More sharing options...
Getrag Posted December 19, 2005 Share Posted December 19, 2005 Hiya, im sorry, i havent read all the posts here so I dont know if it has been covered but.... A little while ago my car was making that horrible "tinkling" sound of detonation while on load. Even the mechanic thought it might be. It turned out to be a hole in the exhaust and went when it was fixed. Any holes in your exhaust? Does it "puff-puff" at idle at all. Look in the engine bay and under the car while its running to listen for it. Edit: Never mind Quote Link to comment Share on other sites More sharing options...
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