Dave1647545494 Posted May 22, 2007 Report Share Posted May 22, 2007 t3-t4 50trim on ford 2.3 boost doesn't even start to come in untill almost 4k rpm and even with the wastegate actuator unhooked it wil only make around 18psi I'm thinking the wastegate is bad/stuck is there anyway to test this? anything else I should be looking for? thanks Quote Link to comment Share on other sites More sharing options...
TurboRust Posted May 22, 2007 Report Share Posted May 22, 2007 same turbo same motor in a different car made 25ish psi by 3200rpm started spooling around 2400rpms Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 22, 2007 Report Share Posted May 22, 2007 any exhaust leaks?(before turbo) Quote Link to comment Share on other sites More sharing options...
WWD JUNK Posted May 22, 2007 Report Share Posted May 22, 2007 Exhaust leaks pre-turbo, damaged turbo/turbine wheel, wastegate stuck open, and boost leaks are all possibilities. Could also be timing, but I doubt it would be that severe. Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted May 22, 2007 Author Report Share Posted May 22, 2007 any exhaust leaks?(before turbo) not that I can tell I just replaced the head gasket so all the other gaskets got redone at the same time Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 22, 2007 Report Share Posted May 22, 2007 Exhaust leaks pre-turbo, damaged turbo/turbine wheel, wastegate stuck open, and boost leaks are all possibilities. Could also be timing, but I doubt it would be that severe. cracked waste gate..leak boost Quote Link to comment Share on other sites More sharing options...
Bad Posted May 22, 2007 Report Share Posted May 22, 2007 cracked waste gate..leak boost Huge amount of back pressure will do it also...added to the previous ideas. Wastegate stuck or bleeding open. A physical inspection will tell you more. I had a Turbonetics Newgen that lost a pin connecting to flapper door..the wg would stick open, partically open, and finally it stuck closed for a very wild ride. Quote Link to comment Share on other sites More sharing options...
Brandon Posted May 22, 2007 Report Share Posted May 22, 2007 bad rings Quote Link to comment Share on other sites More sharing options...
Smokey Posted May 22, 2007 Report Share Posted May 22, 2007 I'm assuming this is still an internal wastegate? If so, I would take off the turbo or turbine housing (if possible on its own, not familiar with t3/t4s) and look at the housing around the wastegate hole. If it's cracked bad enough it'll leak past. Same thing happened on my DSM with very similar symptoms. Quote Link to comment Share on other sites More sharing options...
Mr. Jones Posted May 22, 2007 Report Share Posted May 22, 2007 Curse of the donkey.... Quote Link to comment Share on other sites More sharing options...
Shearer Posted May 22, 2007 Report Share Posted May 22, 2007 What exhaust wheel and turbine housing does the turbo have? Check for exhaust leaks. Check for boost Leaks. Check for cracks in the exhaust housing around the wastegate valve. Is the actuator arm adjustable? If so make sure it is adjusted properly. Quote Link to comment Share on other sites More sharing options...
Mr. Jones Posted May 22, 2007 Report Share Posted May 22, 2007 What exhaust wheel and turbine housing does the turbo have? Check for exhaust leaks. Check for boost Leaks. Check for cracks in the exhaust housing around the wastegate valve. Is the actuator arm adjustable? If so make sure it is adjusted properly. Holy Crap.... Didn't know you were on here. Welcome..and nice 1st post Quote Link to comment Share on other sites More sharing options...
SPLN SUX Posted May 22, 2007 Report Share Posted May 22, 2007 im actully having the same issue.... mine quites spooling around 14.5 but it s a much smaller turbo, but other guys are running 21 on them all day... if i figure out what my issue is, ill let you know... probably the same damn thing. Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted May 23, 2007 Author Report Share Posted May 23, 2007 acutator is adjustable I'll check it again internal wastegate I have a spare housing with an extra wastegate I could trty and swap it out Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted May 23, 2007 Author Report Share Posted May 23, 2007 Curse of the donkey.... maybe, but its scary when the turbo finally spools when I finally fix it I'll probably lose my lisence Quote Link to comment Share on other sites More sharing options...
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