2G PLEASE HELP I BROKE MY CAR

Talon Cooke · Jan 27, 2020

first post here. completely new to the dsm world. Perhaps stupidly i bought a heavily modified 2g talon tsi. It has a huge list of parts that have been installed including bigger turbo, cams, forged internals, injectors to name a few. Long story short the car was idling high when i received it, did some research and came across the biss screw. I tried simply turning it counter clockwise to lower the idle ( it was pretty much all the way tightened when i started) it fixed the idle but then it started stalling after i would rev it/ drive. As the rpms would come back down it would stall out. So i tried closing it again, this is when the problem started. The screw became stripped and i could no longer close it back to where it was. So after trying forever i completely mangled the soft copper screw... So i tried tapping a flat head into it to get it to turn, this worked but i couldn't get it to stop stalling. I tapped the screw more to turn it again but by now the screw was right down to the rubber gromet thing and it is now almost in half but it is still seated in the threads and turning. I started the car once more and it barely started now.. also it would barely respond to me pressing the throttle. It would clunk around and make all sorts of horrible stalling clunking noises. I tried a few more times and it now sounds absolutely horrid when trying to start and keep it running. Im very scared as this car is now my daily driver and i need it to work! IM worried that from tapping the screw with the flat head that a piece of it broke off and went into the throttle body and got sucked in? would this cause the horrible clunking/stalling sound? please help im dumb and dont know what to do now.. the car wont even run anymore... all because of me turning this stupid screw that i should have just left alone.. please some one help me

pauleyman · Jan 28, 2020

This is the best advice. At least take the throttle body off and make sure nothing is wrong. The screw can certainly blow out especially if you gave the car any throttle and the screw was already backed out. If you've been drilling, banging etc you need to verify you didn't mess up any threads. If you did you're likely going to be looking for another throttle body. Lets solve one problem at a time.

Talon Cooke · Jan 28, 2020

thanks for all the help and advice boys. Im trying to find a place that ships to canada to order a new screw. I will be following kryndons advice in the mean time. I appreciate you all! This is the last time i do something like this without proper knowledge

91talonts1 · Jan 28, 2020

Talon Cooke said:
thanks for all the help and advice boys. Im trying to find a place that ships to canada to order a new screw. I will be following kryndons advice in the mean time. I appreciate you all! This is the last time i do something like this without proper knowledge

Check with RTM racing they're in Canada and a good source for OEM parts.

Helaman-99 · Jan 28, 2020

Good luck man. I'm rootin for your car bro, you'll get it running!

motomattx · Jan 28, 2020

In the meantime while your waiting on those parts, a compression test is free and easy to do, and you should do one on any used car to know the basic condition of the engine as well as check the timing belt for wear before running the car any further, also the belt should be replaced unless you can confirm that it has been done withing the last 60k miles.

Talon Cooke · Jan 29, 2020

just got the new biss screw. Put it in all the way then dialed back two turns. Still wont start. it tries and sounds like it is just about to turn over but doesnt. The check engine light blinks/flashes whilst its trying to start. Any advice guys? really need this thing running

1990TSIAWDTALON · Jan 29, 2020

Does it "turn over" and not start or NOT TURN OVER???
Getting fuel and spark for sure???
Try some aerosol carb spray or a LITTLE bit of ether in the intake tract and see if she will try to run, its a test for sufficient fuel supply.

Talon Cooke · Jan 29, 2020

1990TSIAWDTALON said:
Does it "turn over" and not start or NOT TURN OVER???
Getting fuel and spark for sure???
Try some aerosol carb spray or a LITTLE bit of ether in the intake tract and see if she will try to run, its a test for sufficient fuel supply.

it turns over and does not start

Helaman-99 · Jan 29, 2020

Sorry if you've already checked this, but if not, definitely worth a look. https://www.dsmtuners.com/threads/how-to-diagnose-a-no-start.217951/ Wouldn't be a bad idea either to get an OBD scan tool. That has been a big help for me.

Kryndon · Jan 29, 2020

Listen, if I was near you or something I'd gladly come over and check stuff out for you. But I'm halfway across the world, and the others aren't all that near to you, either.

You'd make this way easier for yourself (and us) if you make a DSM profile for your car, list as many parts as you can see, make a few good pictures of the engine bay especially so we can see what's what.

Also there's two ways of going about troubleshooting: The chaotic way, or the methodical way. The chaotic way is replacing one part after another in hopes of fixing your issue. The methodical way is looking over what you've got so far and checking the stuff we've suggested. I've had simple "cranks but doesn't start" situations where a simple plug was disconnected, a fuse missing, or, my favorite, NOT ENOUGH GAS :ohdamn:

motomattx · Jan 29, 2020

A biss screw missing or maladjusted will not keep a car from starting and driving, which is why you should troubleshoot the car the way that I am advising you to starting with the basics and not throwing parts at it, I am likely the only one here that is a dealership master technician that has dealt with this stuff hundreds and hundreds of times, take my advice or not its up to you.

Vegas Smith · Jan 29, 2020

motomattx said:
A biss screw missing or maladjusted will not keep a car from starting and driving, which is why you should troubleshoot the car the way that I am advising you to starting with the basics and not throwing parts at it, I am likely the only one here that is a dealership master technician that has dealt with this stuff hundreds and hundreds of times, take my advice or not its up to you.

I agree with your advice but I’ve made my car turn off multiple times by screwing in the biss and have made it unable to start. Just my experience.

motomattx · Jan 29, 2020

Vegas smith said:
I agree with your advice but I’ve made my car turn off multiple times by screwing in the biss and have made it unable to start. Just my experience.

But if you were to use the throttle pedal to get it to run and drive it then it should have ran, I have driven them for a week at a time with no biss in them.

Talon Cooke · Jan 29, 2020

Vegas smith said:
I agree with your advice but I’ve made my car turn off multiple times by screwing in the biss and have made it unable to start. Just my experience.

how did you fix it? Still cant get it to start. Checked the plugs and saw that they were filthy. Covered in black carbon build up. I thought i may have flooded it. took them out and gonna let it air out and replace them tomorrow hopefully.

Talon Cooke · Jan 29, 2020

motomattx said:
But if you were to use the throttle pedal to get it to run and drive it then it should have ran, I have driven them for a week at a time with no biss in them.

i dont have the equipment for a compression test. Maybe i can tow it to a shop and get them to check. Do you think it could be something else? what could i have broken by adjusting the biss screw?

motomattx · Jan 29, 2020

We are not sure what could be wrong, but you need to start by checking the basics, you can borrow a compression tester from Autozone for free and do it yourself in your driveway, while your plugs are out for your compression test you can look at the condition of your spark plugs and check for spark on all of the cylinders.

Vegas Smith · Jan 30, 2020

Talon Cooke said:
i dont have the equipment for a compression test. Maybe i can tow it to a shop and get them to check. Do you think it could be something else? what could i have broken by adjusting the biss screw?

You aren't helping us help you. You haven't done a compression test, you haven't sent pics of the engine or or a mod list of the car.

RWD4G63 · Jan 30, 2020

Vegas smith said:
You aren't helping us help you. You haven't done a compression test, you haven't sent pics of the engine or or a mod list of the car.

^This. The thing probably has big injectors and a shit tune. Probably fouled the plugs with all that rich cranking and now it won't start. Torch the plugs off or better yet just get new plugs. OP you need to connect with someone knowledgeable enough talk you through potential problems and explain to you how things like this function. Otherwise I see this happening a lot in your future.

Helaman-99 · Jan 30, 2020

I know you were hoping to daily this car when you bought it, and I know it sounds great to be able to drive that little monster every day, but if it's heavily modified it's going to have problems if the previous owners didn't do a good job. I'd recommend finding another source of transportation so you can baby this thing and take it one step at a time so you're not rushed, ya know? Buying a second car may not be in your budget, so find a way to not have to rely on this thing for transportation (carpooling, biking) because mine didn't really last as a daily... there was always something that got in the way of it running properly, and I never got to drive it more than a couple months at a time before something else came up. I don't wanna bum you out or anything, just telling you about my experience of trying to daily a DSM. They are more reliable than most give them credit for, but not when they've been modded a ton. Good luck bro!

Talon Cooke · Feb 15, 2020

Update: i got the car running and have been daily driving it since. I ended up taking it to a shop where it sat for a week. The guy told me to order a new TB so i did. While waiting for it to arrive he ended up getting it going. He didnt exactly explain what was wrong with it.. but he got it running somehow by a mixture of playing with the screw and cleaning the plugs which were completely fouled. however, The idle problem remains.

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