MackDaddy43 Posted May 11, 2010 Report Share Posted May 11, 2010 So I finished putting the front end back together; new turbo and all. The turbo was a used turbo with about 65k on it I got from some yard (just another little baby k03). I also did a coolant flush, oil change, New stern snub, and seafoamed the vac line. I let it run at idle for a while and rev'd it a little to try to get the fluids flowing in the new turbo and everything seemed fine. Except the dv was significantly louder (it's a baileys, but never sounded like this) . I decided to test drive it and that's where it all went down hill. Whenever I would get to about 3k it would start hesitating HARD, like literally jumping forward. Then it would boost super hard. The car feels faster than ever, but obviously there's a problem. I don't even know where to begin... Cel is on, but it tends to be since I'm straight piped. Quote Link to comment Share on other sites More sharing options...
Mr. Jones Posted May 11, 2010 Report Share Posted May 11, 2010 So I finished putting the front end back together; new turbo and all. The turbo was a used turbo with about 65k on it I got from some yard (just another little baby k03). I also did a coolant flush, oil change, New stern snub, and seafoamed the vac line. I let it run at idle for a while and rev'd it a little to try to get the fluids flowing in the new turbo and everything seemed fine. Except the dv was significantly louder (it's a baileys, but never sounded like this) . I decided to test drive it and that's where it all went down hill. Whenever I would get to about 3k it would start hesitating HARD, like literally jumping forward. Then it would boost super hard. The car feels faster than ever, but obviously there's a problem. I don't even know where to begin... Cel is on, but it tends to be since I'm straight piped. Sounds almost like a boost leak somwhere, if it's building boost, falls on its face, then takes back off. Check your DV, lines, ect. Did you have a reason to dick with your N75 ? Quote Link to comment Share on other sites More sharing options...
Patterson Posted May 11, 2010 Report Share Posted May 11, 2010 It sounds like a bad wastegate. Hitting fuel cut, shuts down, picks back up... Do you have a boost gauge on it? 1 Quote Link to comment Share on other sites More sharing options...
MackDaddy43 Posted May 11, 2010 Author Report Share Posted May 11, 2010 No boost gauge. Boost leak sounds probable now that I think of it. I didn't touch the n75 as far as I know. I'll check the lines again tomorrow. I was really hoping I would be done with it tonight lol. How would I know if it's the wg? Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 11, 2010 Report Share Posted May 11, 2010 smoke machine time! Quote Link to comment Share on other sites More sharing options...
MackDaddy43 Posted May 11, 2010 Author Report Share Posted May 11, 2010 smoke machine time! If I can't find this shit I'm just gonna limp it to your place lol Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 11, 2010 Report Share Posted May 11, 2010 did you put all the vacuum line back in the same places? Quote Link to comment Share on other sites More sharing options...
MackDaddy43 Posted May 11, 2010 Author Report Share Posted May 11, 2010 As far as I know! I'll look more into it tomorrow tho. Is that basically what it's narrowed down to? Boost leak or crossed vac lines? Once I figure it out is it still gonna boost as hard as it is now? That'd be sweet.. Quote Link to comment Share on other sites More sharing options...
meatloaf169 Posted May 11, 2010 Report Share Posted May 11, 2010 boost leak hittin bad mine did this for a minute on my dsm the bov gasket was leaking causing boost leak. i'm sure the dv if the clamps are not tight enough it will leak a little my buddies gti had that problem also! Quote Link to comment Share on other sites More sharing options...
CRed05 Posted May 11, 2010 Report Share Posted May 11, 2010 Well your first problem is that you dont have a boost gauge. Second problem sounds like a boost leak. I can fix that problem for you BTW, I have an AWE center vent gauge that I'm willing to part with for $100. Quote Link to comment Share on other sites More sharing options...
MackDaddy43 Posted May 11, 2010 Author Report Share Posted May 11, 2010 Lol I'd rather go with a normal pod that matches my aem uego. Thanks tho. I'll be checking the lines tonight. But on a positive note, I got the whole brake system done on the jetta! Now I just gotta wait for the glow plug so it'll cold start without help Quote Link to comment Share on other sites More sharing options...
boosted98gst Posted May 11, 2010 Report Share Posted May 11, 2010 How did you go about priming the new turbo and engine? Quote Link to comment Share on other sites More sharing options...
MackDaddy43 Posted May 11, 2010 Author Report Share Posted May 11, 2010 How did you go about priming the new turbo and engine? Started it and let it run. I obviously had it running for a little to get warm enough to bleed the coolant system. Is there something else I should have done? Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 11, 2010 Report Share Posted May 11, 2010 suppose to crank the engine for so long to get oil to the turbo before you let it run. Quote Link to comment Share on other sites More sharing options...
MackDaddy43 Posted May 11, 2010 Author Report Share Posted May 11, 2010 unplug fuel pump fuse and crank? Will that still work? or would I have already done damage? I only drove it for about 10 mins, but had it idling for more obv Quote Link to comment Share on other sites More sharing options...
boosted98gst Posted May 11, 2010 Report Share Posted May 11, 2010 unplug fuel pump fuse and crank? Will that still work? or would I have already done damage? I only drove it for about 10 mins, but had it idling for more obv Thats how my buddy fucked up his brand new turbo, all he did was start the car idle it and drive it. The way most BB turbos are is your prime the turbo with oil, depending how long the thing has been sitting, put oil feed back on. Unplug the fuel pump then crank until pressure. some dsm guys do the whole spin the whole oil pump deal with a air tool also. Quote Link to comment Share on other sites More sharing options...
MackDaddy43 Posted May 11, 2010 Author Report Share Posted May 11, 2010 hopefully I didn't do any damage. I don't know that the k03's are bb or not, but I'll do that when I get home too. Quote Link to comment Share on other sites More sharing options...
cinergi Posted May 11, 2010 Report Share Posted May 11, 2010 It's possible turbo damage, but it sounds to me like a boost leak. Check it good, especially if you didn't use new lines with that mileage. Quote Link to comment Share on other sites More sharing options...
boosted98gst Posted May 11, 2010 Report Share Posted May 11, 2010 hopefully I didn't do any damage. I don't know that the k03's are bb or not, but I'll do that when I get home too. I know his was a 57 trim non BB, on the k03's does it only have an oil feed and drain? or coolent lines also? Quote Link to comment Share on other sites More sharing options...
Mr. Jones Posted May 11, 2010 Report Share Posted May 11, 2010 I know his was a 57 trim non BB, on the k03's does it only have an oil feed and drain? or coolent lines also? It's oil and coolant, definately NOT BB, it's a cheapy standard CHRA... Quote Link to comment Share on other sites More sharing options...
MackDaddy43 Posted May 11, 2010 Author Report Share Posted May 11, 2010 thats why I wasn't sure if it would cause damage, because it's oil AND water cooled. I got the bentley manual, so I'll check all of my lines tonight. Should I have replaced the vac lines or something? Quote Link to comment Share on other sites More sharing options...
boosted98gst Posted May 11, 2010 Report Share Posted May 11, 2010 thats why I wasn't sure if it would cause damage, because it's oil AND water cooled. I got the bentley manual, so I'll check all of my lines tonight. Should I have replaced the vac lines or something? When I always did turbo installs or changing out things, I always change out all the lines and clamps. they are so damn cheap. there should be no reason why old broken or brittle lines should stay on. Also did you make sure all your pressure sorces are correct, wastegate ect? Quote Link to comment Share on other sites More sharing options...
MackDaddy43 Posted May 11, 2010 Author Report Share Posted May 11, 2010 They didn't seem to be broken or brittle, but thats deff something to consider. And what do you mean are my pressure sources correct? Its an internally wastegated turbo Quote Link to comment Share on other sites More sharing options...
boosted98gst Posted May 11, 2010 Report Share Posted May 11, 2010 They didn't seem to be broken or brittle, but thats deff something to consider. And what do you mean are my pressure sources correct? Its an internally wastegated turbo I know its internally gated, but it still needs a pressure sorce like to the hotpipe? Depending on how you have it set up or if you have a boost controler. I have seen these hooked up backwards before. Quote Link to comment Share on other sites More sharing options...
Clifford Automotive Posted May 12, 2010 Report Share Posted May 12, 2010 You cant mess up the piping on these. I just did one last week. You did spend the $23 on a turbo replacement gasket kit I assume? Quote Link to comment Share on other sites More sharing options...
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