Scott Posted July 2, 2008 Share Posted July 2, 2008 Need help folks, my car has stopped making boost. I'm thinking the worst assuming that turbo1 has just went pop. I'm getting a small amount of spooling from the turbo's but nothing like what it should be. I've had a quick look around the IC piping and all seems ok (hardpipe kit). Is there anything else i should be checking? Quote Link to comment Share on other sites More sharing options...
gaz1 Posted July 2, 2008 Share Posted July 2, 2008 Need help folks, my car has stopped making boost. I'm thinking the worst assuming that turbo1 has just went pop. I'm getting a small amount of spooling from the turbo's but nothing like what it should be. I've had a quick look around the IC piping and all seems ok (hardpipe kit). Is there anything else i should be checking? you should be checking all boost pipes, not just intercooler ones, if you search there are loads of threads to help check them Quote Link to comment Share on other sites More sharing options...
Scott Posted July 2, 2008 Author Share Posted July 2, 2008 you should be checking all boost pipes, not just intercooler ones, if you search there are loads of threads to help check them Yeah i'm searching just now. Thought i would ask in case i could get a quicker answer. There is so much stuff to trawl through. All i have checked so far is the intercooler piping and had a look round for anything obvious. Don't really know where i should be looking though. Quote Link to comment Share on other sites More sharing options...
Scott Posted July 2, 2008 Author Share Posted July 2, 2008 http://www.mkivsupra.net/vbb/showthread.php?t=139219&highlight=no+boost This sounds exactly like mine. Its not looking good. Gaz could you point me in the direction of what to check? All i can find is "check IC hoses" Quote Link to comment Share on other sites More sharing options...
Scott Posted July 2, 2008 Author Share Posted July 2, 2008 Just had a thought. Would the wastegate being stuck open cause this? Is that possible? Quote Link to comment Share on other sites More sharing options...
adnanshah247 Posted July 2, 2008 Share Posted July 2, 2008 dude my intercooler piping came loose and i lost all boost. the car was running like a micra. found the loose pipe, put it back on and it back to normal. another way you can tell if its the i/c pipe is buy checking the sound of your dump-valve. when you rev the engine are you getting the same swooosh loud sound??? if you are then its not the i/c. if its a little sound then its the i/c piping and if its not there at all then its your turbo. Quote Link to comment Share on other sites More sharing options...
adnanshah247 Posted July 2, 2008 Share Posted July 2, 2008 Scotster do you have a front mount intercooler? Quote Link to comment Share on other sites More sharing options...
Scott Posted July 2, 2008 Author Share Posted July 2, 2008 Yeah front mount intercooler with hardpipe kit. The boost gauge is showing normal at idle then when it should be coming onto boost its rising up to 0. When i let off the accelerator the dump valve lets out a little pressure but hardly anything. I'm just going out to quadruple check the pipes but i'm almost positive its not. Quote Link to comment Share on other sites More sharing options...
Scott Posted July 2, 2008 Author Share Posted July 2, 2008 Ok checked again, still can't see anything wrong. Should i take one off to see if i get different symptoms? Quote Link to comment Share on other sites More sharing options...
adnanshah247 Posted July 2, 2008 Share Posted July 2, 2008 dude i can guarantee u now its the intercooler pipes. ok im guna add you a pic of the 3 main places were the piping comes loose. its a pressure pipe bro all round so any slight leak will cause you problems. the big arrow is were mine has come loose 3 times!!! Quote Link to comment Share on other sites More sharing options...
Scott Posted July 2, 2008 Author Share Posted July 2, 2008 I've checked all the bits that i can without getting the car up on ramps (i can't see the joins behind the bumper, i can only feel them) so i'm thinking the next step is to get it pressure tested. Can most garages do this? How do i get it tested? From the turbo to piping to intake manifold or the reverse? Quote Link to comment Share on other sites More sharing options...
Scott Posted July 2, 2008 Author Share Posted July 2, 2008 Phoned "The Garage" and Mark reckoned it would most likely be a wastegate stuck open. Any way of checking this? Faulty actuator maybe? Any way of unsticking it? I'm guessing during the day is a bad time to ask questions lol. Quote Link to comment Share on other sites More sharing options...
adnanshah247 Posted July 2, 2008 Share Posted July 2, 2008 could be the waste gate but i doubt it, but like they say, never say never. if the waste gate is the issue you will have the same problem. further to our phone call the slightest leak will make you loose the pressure hence loss in power. Quote Link to comment Share on other sites More sharing options...
colsoop Posted July 2, 2008 Share Posted July 2, 2008 I don't know which ic and pipes you have but. the 2 most common 2 pop are the throttle body pipe and the join in the passenger wing. pop the headlight out and have a look see. Quote Link to comment Share on other sites More sharing options...
Scott Posted July 2, 2008 Author Share Posted July 2, 2008 I don't know which ic and pipes you have but. the 2 most common 2 pop are the throttle body pipe and the join in the passenger wing. pop the headlight out and have a look see. I've got a Greddy hardpipe kit and a Greddy intercooler. I can't see any issues with the inlet or the turbo outlet pipes but i can only feel the ones underneath the car (The join's before the intercooler). I can't feel anything wrong with them at all but i think the only way i can be certain is to take the bumper off. Quote Link to comment Share on other sites More sharing options...
colsoop Posted July 2, 2008 Share Posted July 2, 2008 I've got a Greddy hardpipe kit and a Greddy intercooler. I can't see any issues with the inlet or the turbo outlet pipes but i can only feel the ones underneath the car (The join's before the intercooler). I can't feel anything wrong with them at all but i think the only way i can be certain is to take the bumper off. What boost were you running out of interest ? Quote Link to comment Share on other sites More sharing options...
Scott Posted July 2, 2008 Author Share Posted July 2, 2008 What boost were you running out of interest ? Just under 1 bar. I received my new fin for my SSQV and i swopped it over so i took it out for a spin to see how she sounded. In case it was a fault with the dumpvalve i took it out and blocked the pipe to see if that was the problem but it wasn't. Quote Link to comment Share on other sites More sharing options...
Scott Posted July 2, 2008 Author Share Posted July 2, 2008 Bumped for the evening techies lol Quote Link to comment Share on other sites More sharing options...
adnanshah247 Posted July 2, 2008 Share Posted July 2, 2008 try this, get somebody to hold the revs down at about 3000rpm and then hear arpund the front if you can hear a strong whistle, that will most probably show u were the air leak is...... without the rev you wont be able to hear the whistle. Quote Link to comment Share on other sites More sharing options...
Homer Posted July 2, 2008 Share Posted July 2, 2008 If it's a IC pipe, and the boost leak thats bad enough to cause no (or negligible) boost, then it'll be running like crap and billowing out black smoke from overfuel. If it's running okay then it'll more the next most likely cause is going to be something holding the wastegate open. When checking it, what sort of RPM did you go up to under load? If the wastegate IS stuck open then at high rpm above 2nd/3rd you should still get the same boost as you were seeing before (becasue at those rpm and speed the wastegate will normally be open anyway). BTW, I'm not suggesting you go and do this, but you might have already... Quote Link to comment Share on other sites More sharing options...
SimonB Posted July 2, 2008 Share Posted July 2, 2008 If it's a IC pipe, and the boost leak thats bad enough to cause no (or negligible) boost, then it'll be running like crap and billowing out black smoke from overfuel. Depends if it's a UK spec - if so that's true but if it's a Jspec with a MAP sensor it won't be overfueling. Quote Link to comment Share on other sites More sharing options...
Homer Posted July 2, 2008 Share Posted July 2, 2008 Depends if it's a UK spec - if so that's true but if it's a Jspec with a MAP sensor it won't be overfueling. It's a jspec by the looks of it. When I popped the IC pipe off my manifold the engine ran like crap and put out a load of black smoke. But anyway, that might just be mine being strange! I'd have thought it'd be trying to stall out with a large boost leak though? Quote Link to comment Share on other sites More sharing options...
Scott Posted July 2, 2008 Author Share Posted July 2, 2008 If it's a IC pipe, and the boost leak thats bad enough to cause no (or negligible) boost, then it'll be running like crap and billowing out black smoke from overfuel. If it's running okay then it'll more the next most likely cause is going to be something holding the wastegate open. When checking it, what sort of RPM did you go up to under load? If the wastegate IS stuck open then at high rpm above 2nd/3rd you should still get the same boost as you were seeing before (becasue at those rpm and speed the wastegate will normally be open anyway). BTW, I'm not suggesting you go and do this, but you might have already... Car runs absolutely perfect, apart from the lack of boost lol, no smoke, no rough idle, nothing I didn't totally nail it as i was in a built up area but i will take it out for a spin tomorrow to see if i can make any positive boost. I'll also see if i can get a mate to hold the rev's while i have a listen. Would the turbo's make enough positive boost for me to notice while there isn't much load on the engine? Thanks for the help guys Quote Link to comment Share on other sites More sharing options...
bignum Posted July 2, 2008 Share Posted July 2, 2008 You won`t go anywere in a uk spec with an ì/c pipe off. Quote Link to comment Share on other sites More sharing options...
gaz1 Posted July 2, 2008 Share Posted July 2, 2008 i popped an itercooler pipe and lost all boost but she did continue unning ok just no boost at all but i could hear the whosh when she popped so knew it was that, before i went single i popped a small pipe at the back of the the metal pipe cluster and lost nearly all boost but heard nothing, just seems strange that you lost boost after fitting a new bov insert, you sure you havent knocked something while doing so Quote Link to comment Share on other sites More sharing options...
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