Audi a4 b7 boost leak. 0T FSI Another weak point of the B7 Audi A4 2.
Audi a4 b7 boost leak Found various misfires and a frequent Boost Pressure Regulation code. 0T/3. 0t p0299 issues driving me insane. 0 TDI, Turbo Boost Related Issues - Hi Guys, I am new on here. RS4 PS rack, RS4 Servotronic Relay,RS4 rims. Any ideas on how to plug this so I can get started. I've done all the work on it since I bought it in 2011 (timing belt, water pump, rear coolant Jun 17, 2009 · I conducted a leak test without any clear leaks found (maybe I missed something here somehow). the n75 valve is a common topic. That is where the smoke was coming from when I checked using my smoke machine. I have appreciated reading all the different threads this site has to offer and have learned a lot about what I can do with my ride which, for now, is completely stock. , PRV + S3 inj. I've been having issues with my car, I've been getting low vacuum and generally running like crap pointing to a vac leak. My 80,000 mile 2. Thanks to him for his patience and invaluable help. 0TQ Dolphin Gray Metallic 6MT REV O Stage II, 034 HFC, AEM turbo inlet/intake, OEM Piston DV, BSH PCV Fix, HID Fogs/Fog Mod, AWE Boost Gauge, Debadge Jun 23, 2021 · Home Forums Audi A4 Club Audi A4 (B7) Forum B7 2. 2. 9 TDI BRB engine code, and have been dealing for a while now with boost pressure leaks, i suspected that the turbo had a problem since it was modified to fit a 131hp CHRA and was repaired 4 or 5 times untill now. When I had the regular stage 1, I also held 15 psi of boost. Pretty sure is a vacuum leak. I know my profile says NOOB, but I've been lurking here and elsewhere for years. 0T B7 B8 (2004 - 2016) IHI IS20 Turbo - Premium Boost Leak Tester Kit - Billet Aluminum Jun 29, 2012 · I have a 2007 Audi a4. 0T FSI was the factory PCV system. 0 TDI with engine code BRE. This is obviously an issue as I shouldn’t be seeing much more than 10, if at all past 10 for a stock tune. I am now trying to plug it so I can start my test, but its not round to put a cork or some other round object. 8t. Audi A4 2. 0t with 81k miles we bought it and it had a pending p0299 code and it went away then it came up with a evap large leak with the p0299 code. 0T FSI Another weak point of the B7 Audi A4 2. My car, a 2008(57 plate)Audi A4 Avant B7 2. When subjected to constant heat from the motor, the plastic hoses and connectors degrade and crumble over time leading to boost leaks. 0t oil Separator PCV breather testing boost leak crankcase pressure blowby P2187 P0171 Audi VW NaptownTuner 143K subscribers Subscribed Dec 15, 2016 · Audi A4 B7 BRD with 000665 - Boost Pressure Regulation P0299 - 006 - Control Range No jamieg Dec 15, 2016. 0Tdi Not making boost New Members - please read before posting Oct 2, 2016 · A4 B7 2. 0t codes so far P0033 P2187 P2279 P0299 No obvious boost leaks but it has been a while since my last pressure test and now i'm doubting myself. I have a 2. 5 - 4 x DB6502 + DB840DVC sub + Pioneer 10" sub | LEDs throughout | 19" Audi 2015 RS4 rims Dec 6, 2006 · I am going to do a boost leak test on my 2007 a4 tomorrow. next Aug 24, 2018 · Hi guys, I did my first data-logging last night with VCDS. 0. Is such fluctuation indicative of a boost leak? It definitely appears that the ECU is requesting the proper boost, but something is causing the boost to drop off. I have a 2007 Audi A4 2. 5 A4 1. . I'm currently facing issues of boost/air flow issues. I replaced it with a MBC set at 18 psi. 9tdi. Jun 26, 2009 · Boost leak testing is an important diagnostic step on any turbo charged vehicle. This can help narrow down problems when a P0299 underboost code is triggered. How do I check for boost leaks in my Audi? You can check for boost leaks by visually inspecting hoses and connections, using a smoke tester to identify escaping air, or applying a soapy water solution to connections and looking for bubbles. Check engine light is on with error code P0171. 0T and a few days ago my car's brake pedal went completely stiff. 0T FSI? Apr 3, 2016 · Hi everyone, been having issues with my APR 1+ flashed 1. While it is a fantastic platform, the 2. Recently, I installed a mechanical boost gauge in my car. To solve the Apr 14, 2007 · AudiWorld Forums Audi Models Audi A4 A4 (B7 Platform) Discussion Help with Boost Leak Test A4 (B7 Platform) Discussion Discussion forum for the B7 Audi A4 produced from 2005-2008. 0T FSI Discussion - How I understood and "fixed" the P0299 underboost CEL - Before addressing the P0299 problem here is a bit of context. One month ago an independent garage looked at it and did $2200 of work including Mar 12, 2015 · A4 (B7 Platform) Discussion - 2007 Audi A4 2. Idle is normal after cold start , about 800 rpm. this DIY will show how a boost leak tester can be build very inexpensively and can be adapter to suit different air sources. 0TFSI Turbo Audi has lost a lot of performance but produces no check-engine-light (CEL) or codes. I have pressure tested the system and haven't found anything so my next step will be to Apr 14, 2010 · 1. My only question is, is there a brake booster relay? I tried searching online and I can’t find the relay anywhere. The only significant dealer repair apart from brakes and tires has been the low pressure, Nov 8, 2006 · When I sicked my VAG-COM on it, I got this code: 16840 - EVAP System: Very Small Leak Detected P0456 - 002 - Lower Limit Exceeded - MIL On I had this code last fall (intermittent, no CEL) and reseating the hoses on the purge valve behind the airbox solved the problem. I'm posting in the b6 section since my cars 1. On stock tune, I’m currently seeing spike of 15-16 psi and holding a solid 12-13. After i did that air immediately started coming out of the oil dipstick area Apr 28, 2004 · Forum Main Model-Line Discussion B6 A4 How to tell if you have a boost leak. 8t is more related to a b6 anyway. Fortunately, those drawbacks Jan 24, 2016 · APR KO4, APR HPFP,RS4 LPFP Cntr,145 bar PRV, APR TP, TT DP, GFB DV+, AWE FMIC, BFI CC, AWE Exhaust, RS4 Exh tips, ST CO, 034 RSB,034 St Dnsty Mtr Mts, New Sth West Bst guage, B7 RS4 8 pot Calipers. I don't have a known healthy Jan 10, 2022 · For almost a decade, Audi has been using turbos on base engines and high-performance engines. I am assuming this is a necessary step so that Nov 16, 2017 · Diggy98 Established Member 33 First Name: Dragos Town / County: Bucharest Audi Model:: A4 B7 Avant S-line Audi Year: 2007 Author Posted November 17, 2017 Aug 20, 2014 · The *NEW* B7 FAQ/New Member Guide v2 - A MUST READ Common B7 A4 Problems/Issues & Solutions Audi FSI Engine Carbon Build-up Thread for B7 A4 2. Car runs and drives fine but on occasion there is a boost issue, Sometimes taking off in 1st gear there isn't any boost and no lights or anything but 2nd and rest of gears boost is back. Sep 15, 2022 · A4 (B7 Platform) Discussion - Boost Leak Help - Hello all. 0 TDI with just over 100k miles on it. Oct 9, 2025 · You didn’t say what model year you have, just B7 2. Understanding the types of oil leak problems and their symptoms is crucial for any Sep 11, 2011 · Forum Main Model-Line Discussion B7 A4 Where are the most common vacuum leak areas on a 2. My 2011 Jetta would barely run above idle because of a blown off boost pipe. 00 Add to Cart Mar 18, 2023 · I drive a 2008 Audi A4 sline 2. What is the role of the diverter valve in an Audi’s turbo system? Mar 10, 2009 · 2005. Feb 25, 2014 · Posting on behalf of a visitor. Issue: With All electrical sensors connected, the car is extremely Jul 3, 2019 · 2008 Audi A4 Avant 2. i replaced the Look For Longevity From the 2. The yellow dipstick itself looks new, is it missing an O-ring by chance? May 24, 2025 · Explore common Audi A4 N75 valve problems, owner experiences, and key insights to help you tackle performance issues effectively. Today, we’re going to ensure it stands the test of time and holds up under all that pressure. If it is a suck, can I use a unlit propane torch and listen for RPMs to go up? 2004 A4 Avant Quattro. Jun 23, 2020 · Recently, we spoke about how to add over 100 hp to your Audi B7 A4. Led Interior Aug 12, 2016 · 2. One thing that I see is that "Boost Pressure (specified) mbar" is different from "Boost Pressure (actual) mbar". Oct 30, 2017 · A4 (B7 Platform) Discussion - 2007 a4 2. I put the pvc into the intake hose and sealed it up, then set the compressor to 14psi and plugged it all together. 0TFSI Quattro 6MT |Visuals: Lip Spoiler CF / Headlight Blackout + Clear Corner / LED Number Plate / Smoked LED Tail Lights / RS4 Grill / Night Braker Plus / S-line Door Blades / Gunmetal RS4 18" Wheels| From how the oil appears to have been sprayed onto the coolant pipe (below the alternator) from above, I’d say the oil is more likely from a boost leak somewhere or crankcase pressure blowing oil out the dipstick tube. So thanks to all that have contributed with their Nov 11, 2025 · Find out how to spot and identify a boost leak by recognizing common symptoms for better turbo performance and engine response. An oil leak can lead to a cascade of problems that can affect your vehicle’s performance and longevity. Do the N75 duty cycle values seem acceptable? They hold fairly steady through the run. If there is anyone who has done could you help me out? Or can anyone give me the directions they followed to do a boost leak test. Nov 7, 2012 · Hi guys, I'm pretty new here. 5 VMR 702's, RS4 Front Grille, Hotchkis Rear Sway Bar, S4 Mirror Caps, Koni Coilovers, Custom AWE Quad Catback Black Diamond Tip Exhaust with Fabspeed Resonators and Mufflers Sep 11, 2017 · A4 (B7 Platform) Discussion - Audi A4 no boost/power - I have a 2. S4 mirror caps,DTM frt bmpr and rs4 fogs,LED tail lites S4 Recaro Front & Rear seats. However, like any car, it can develop issues over time, and one of the more common concerns among owners is oil leaks. No such luck this time. Do you have a check engine light and any codes in VCDS? I’d check again for boost leaks in the entire intake system, including piping that you replaced going to and from the intercooler. Most b5's don't have the same brake booster system. Oct 23, 2016 · Hi guys. 0T, Quattro, stock, no mods, 242,500 miles. 0T FSI with pictures. 8t to get past 15 psi under boost. I disconnected the hose from the PCV valve that goes to the turbo. Sep 23, 2024 · 2. Scary situation luckily I didn’t crash and made it back to work. So I finally had a chance to do a test i made a tester using pvc and a compressor. I am also peaking a little over 130 g/s MAF reading, it was 147 highest before I cleaned the MAF. May 3, 2016 · If so, it’s highly likely that you’ve got a vacuum leak. 5 This vide will show you in 5 minutes How to check if you have small or large Boost Leaks in 2 minutes for free with out doing a Smoke Test or Searching your Feb 28, 2025 · The Audi A4 is a well-engineered vehicle that offers a blend of performance and luxury. I am about to do a boost leak test and the question is if I connect the tester on the intake and block the May 25, 2013 · Joined May 25, 2013 Location Oldham TDI Audi A4 B7 s-line tdi 140 Jun 25, 2016 · 2008 Silver Audi A4 B7 2. 0t audi a4 b7 with an air/oil (?) leak coming from right under the intake manifold closest to (under) the fuel rail sensor that sits there (next to the alternator). 5 Audi A4 B7 2. 0, and how to test and replace. I have replaced the bypass valve with no change. 0T FSI Discussion - Leak in Air Intake System and Turbo Underboost - Hey guys so Im having some issues with my 2010 Audi a4 2. 5. I have done alot of searching on this site and ive come across many different ways to check for boost leaks. In a nutshell, if some of the air getting sucked into your motor escapes somewhere, it can spell bad news. 8T B7 idles at about 1200 rpm when engine is hot. Recently purchased a 2006 A4 1. May 2, 2012 · Hi guys I've had this boost leak since I worked on my engine a few weeks ago and now its starting to get really annoying. One of my tech buddies said the brake booster has likely gone bad. I switched the engine in from a wrecked A4 recently. Aug 11, 2010 · A4 (B7 Platform) Discussion - 2007 A4 2. 0t. I recently changed that same sensor to clear a code that did not get cleared, but the smoke is behind that oring closer to Mar 7, 2010 · What is the standard test for the SJP to detect cracks/leaks. 0 FSI triptonic~ 18x9. , G247 + DW300c | GFB DV+| 034 RSB + all arms and mounts | S4 brakes | B12 Bilstein suspension + H&R springs | RNS-E + Polk Audio PA D5000. Goodridge SS brake lines frt & rr. - Hey all, First time here but i looked around and im still at a loss. 0T Tip - Stage 2 94 octane Digitek Tuned [AEM Intake, CTS FMIC, B8 IHI Turbo, CTS test pipe, 2. The three things all of these engines have in common are intercoolers, plumbing to connect the turbo to the engine, and valves to control boost and turbine speed. I own a Audi A4 1. 5" Custom stainless exhaust, Rev J DV, H&R Springs, Bilstein shocks, S4 rear sway bar, B8 S-line seats] A4 (B7 Platform) Discussion - Low boost without boost leaks (K04) - This is my first thread to please let me know if this has happened before/where I should look if it has. 0T | HPFP upgrade + FMIC | BSR Stage II + exhaust + HFC | 3. So far, I’ve checked for boost leaks, swapped the n75 twice, checked all lines feeding to that, as well as checked the diverter valve to be Audi A4 2. I leak tested using block 71 in Basic Settings. Mar 14, 2024 · Hi everyone, this will be my first post on the site so thank you in advance to anyone who can help. It runs very smoothly but does not appear to be boosting. Body | RS4 fuel contr. Boost leaks can be a big headache, but before you assume you have a boost leak, you should check to make sure you know that's the case. The installation is pretty straight forward but sometimes things have to be We discussed checking for boost leaks on your VW or Audi model. 0T B7 engine problems - New guy to the form here. - Hello there, I decided to tackle the boost gauge install today with the help of my buddy Max. I figured I would get more or maybe I have a boost leak. Vehicle is a 2008 Audi A4. - alright first off this is my first thread im posting on the audi forums, and ill try to keep posting about every problem i encounter with my TT as long as there isnt posts about the same problem already. For example, at 6040 RPM specified boost is 2130 mbar, but actual boost reads at 1850 mbar. 0T B7 B8 (2004 - 2016) IHI IS20 Turbo - Premium Boost Leak Tester Kit - Billet Aluminum $75. I disconnected it at the PCV, not at the turbo end. 2007 audi a4 2. Basically under idle I'm getting around 25 hg of Aug 25, 2008 · Re: How do i diagnose bad n75 valve?? I removed my n75 on my a4 due to a similar situation. 0TFSI Throt. Just wanted to know what everyone else was getting wih the stock turbo. I own a 2001. 0t? Apr 7, 2018 · Hi guys My 1. Monitoring group 115, I see substantial deviation between specified and actual boost, both You’ll be able to see how it should function in an inactive and powered state, where it is on the Audi A4 B7 2. First off, I have the B7. Check Engine light came on and 2 Codes came up - P2279 (Intake Air System Leak) Which i think triggered the secondary code - P0299 (Turbo/Supercharger Under-Boost) Now Ive had my Engine May 8, 2007 · 2006 A4 B7 2. CURRENT: 2007 Audi S4 Sprint 6-Speed 2004 Porsche 996 Turbo 1999 Mazda Miata (Track) 1991 Mazda MiataPAST: 2000 Audi S4 Imola 524 WHP 527 WTQ 1999 Audi A4 Avant 2001 Audi S4 EPL Stage 3+ Reply With Quote 07-15-200906:33 PM #4 FrancoTheTanko Senior Member Three Apr 15, 2025 · Q2: How do I perform a boost leak test on my Audi A4? To perform a boost leak test, you’ll need a boost leak tester, which connects to the intake system and pressurizes it. 0 FSI A4 that doesn't have any power past 1/4 throttle. You can throw a ton of parts and labor at a TFSI or TSI engine to get the check engine light to go out for a boost issue. Customer: hi Adam. Dec 25, 2015 · Forum Main Model-Line Discussion B7 A4 2008 audi a4 B7 2. I recently added a awe boost gage and I'm getting no more that 8psi. 5 Base, 2. Owner is complaining of stumbling or surging under part throttle. There are some limitation to as the intake manifold isn't tested. 0T FSI 9 | 034Motorsport Billet Aluminum Catch Can for B7 Audi A4 2. 0T coolant leak from back of engine Page 1 of 2 1 2 Last Results 1 to 40 of 44 Sep 22, 2022 · In this article, you will find some common causes, symptoms, and recommended solutions to help you with your Audi A4 turbo problems May 15, 2019 · except diverter valve failure and loose waste gate arm, what else can cause this code on B7 A4 2. Hawk HPS frt & rr. 0T ruff idle and stalling, replaced everything (list provided) Page 1 of 2 1 2 Last Results 1 to 40 of 59 Apr 20, 2022 · Is your Volkswagen or Audi getting a P0299 engine code? An article on symptoms, causes, diagnosis, and DIYs for the P0299 VW or Audi code. Feb 9, 2021 · I am trying to do a boost leak test on my 2014 Audi A4 Quatro. 0T longitudinal engine in the B7 A4 has some shortcomings. Feb 7, 2021 · A4 (B7 Platform) Discussion - Boost issues - first post so thanks for taking the time to read 2008 A4 quattro wagon 2. So once I upgraded to the 1+ and kept the same 15 psi peak boost I knew there was a problem. Feb 5, 2006 · A4 (B7 Platform) Discussion - Installation of Boost Gauge on B7 A4 2. I drive a 2014 Audi Q5 which I have owned since new and it currently has done 115K miles. Standard boost leak test will find it? Does a leak blow or suck at idle? if it is a blow, I could just use my hand or smoke. MIL on. 8T Discussion - N75 wastegate actuator valve explained/symptoms. These are the codes I have: P000A P0299 P2015 I wonder if switching in a new cam angle Apr 17, 2025 · 4. yet i have Jul 4, 2014 · Forum Main Model-Line Discussion B7 A4 2. 00 Add to Cart Jan 27, 2016 · Make sure no boost leaks at any pipes or o-rings missing in charge pipe connections before a break down. 2 12-10-2015 07:57 PM #3 klrider44 Veteran Member Four Rings Audi A4 2. gusbtyhsztbksozajkilmzolvqpbjjqmpusvzjjxdfiqtmxibiyrbzgczlkhbptolzt