hi everyone,i am having a problem with my boost, i cant remember when it started but was about 5-7 months ago, my boost builds up to about 10psi, nice and quick but it holds as it should but then it will drop and splutter for about 20 secs before i can accel again, mainly in 3rd and 4th gear sometimes all gears. i have an Audi A4 1996 1.8t, its Remaped (chipped) its got bran new turbo K03 Bran new DV running maunal boost..... I have recently noticed that i think my boost gauge is connected in wrong place but dont know what is meant to be in its place as i didnt fit it, i will attatch a pic if anyone can help....

Thanks
Mike

 

Your boost gauge is hooked up to the blue line? That's where mine is hooked up.

You could have a boost leak causing this issue, or misfires, etc. How old are your spark plugs, which plugs are they, and what's the gap on them?

 

hi thanks for the reply, i have changed to bran new plugs about 2 weeks ago, helped for a bit but back to the same again, i fitted 0.28/0.70mm gap and they are NGK ones, i heard they are pretty good, i wasnt sure about the boost gauge as i has seen ppl fited it in a diff place but it does work so hey ho, erm... i have tried looking for a boost leak but cant seem to find anything, do you have a good ways of doing this at home?

thanks for the reply

mike

 

I thought there was supposed to be a connection to the suction jet pump where that blue line is? I have mine T'd into the short vac line between the FPR and the IM, just below the check valve where you have yours connected. Have you done a check for boost/vac leaks yet?

I'm gonna beat MetalMan to a thread one of these days....

 

could u add a picture of yours please so i know what im looking at, nah not tried a boot leak test yet, honestly dont know how, i only know basic things, thanks for the help.

mike

 

You can make a boost leak tester without too much trouble. A quick Google search will turn up plenty of DIY threads. Where are you located? I have a boost leak tester I let you borrow if you promise not to steal it.

I don't have any pictures of my boost gauge plumbing since I moved it, but I can take some when I get outta work

 

im located in aylesbury, buckinghamshire, thats really kind of you, and i wouldnt do that, really apprechiate ur help.

mike

 

p.s england lol

 

It would cost me way more to mail it to England than it would cost you to make one LOL. Here's the DIY I used, really easy to follow:

:: a4mods.com :: - The Premiere Audi A4 Modification Guide and Pictures Library

 

His car doesn't have a suction pump the piece where his line is connected is actually the brake booster check valve... normally there's a cap on that port but on my car for example, that cap was broken. So I installed my boost gauge line on that check valve.