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hissing

  1. Exhaust gasses smell after DPF delete

    Hi, Looking for answers to get a fix on a new problem I have encountered. I got DPF deleted as it was getting blocked and failing regens. And the car seems to run fine with no issues. It drives fine and there doesn't seem to be a problem until you start listening in and smelling exhaust fumes...
    • YKFR
    • Thread
    • cabin dpf dpf delete exhaust smell exhaust system fumes hissing smell
    • Replies: 6
    • Forum: Leon Mk3 (2012-2020)
  2. DOMINIC SELLY

    Exhaust Hiss or Blow?

    So I had a new Scorpion Exhaust fitted today on my Cupra 300. I had a res delete before which wasn’t fitted the best so blew a little. I now have this fitted and it sounds amazing. Only thing I have to say is it makes a slight hissing sound when I put my foot down? The same as when I had the res...

  3. Suspect boost leak (hissing) - costs?

    Hi, When fixing up the engine block, mechanic has mentioned there is a 'hissing' sound, and that combined with the recent error codes from VAG.COM would indicate a possible boost leak. They mentioned it would require some form of 'octopus' of pipes and here I am showing my ignorance as I...

  4. Boost leak and hissing sound after cambelt/waterpump change

    After getting my cambelt/water pump changed a few months ago ive had constant boost leaks/hissing noises from the drivers side ive been back to where i got it done several times and they have retightend the near side intercooler pipe and then the car feels fine for a few days but when i put...
  5. james walker

    hissing, intermittant

    guys, as an ongoing fault, i have a whine when i rev the car... doesnt whine when ticking over. if it was a cambelt tensioner wouldnt this whine all the time? and whilst replacing a bust dipstick tube, i can hear an intermittant hissing, as in start stop hissing, from what i can make out to...
  6. Lukeyx

    Hissing sound after boostpipe fell off

    Few days ago I was driving down the road, heard a strange hissing sound, booted it and heard a bang and then pipe fell off, then black smoke started coming out. I put the pipe back on got a garage to have a look, they said the pipe was fine, but I don't think it is. When I accelerate it...
  7. james walker

    hissing, chattery noise on throttle

    guys, ive developed a hisshing chattery type noise in first and second on full throttle, definatly wasny there before, any ideas,, i know description is vague but help appreciated.

  8. Hissing Noise

    Right i have a really big hissing noise when i put my foot down and i understand it must obviusly be a leak in the turbo system somewhere coz lose power as well. Has any1 had this problem before and is it easy 2 find where the problem is coming from as i have no ideas and not sure where 2 take...

  9. Hissing Noise from Engine Compartment

    As per the subject title, I've noticed a hissing noise from the left handside of the dash when I'm accelerating through each gear. Never noticed it before, so I'm guessing that a pipe on the turbo has came loose and either exhaust gasses or pressurised air is escaping?? Am I correct in...

  10. 110 TOLEDO hissing coming from engine.

    I recently had my car remapped. it was pulling very well but now it does not seem to pull nearly as well and under the bonnet as i look at it, coming from the front left of the engine i can hear a hissing noise. engine cover is still on it but can anyone think if there would be a hose loose...
  11. everitt1980

    Hissing noise?

    Wondering if anyone can help me. Was working on the car yesterday fitting tip and a shortshifter and started the car to make sure that it was engaging all gears when i noticed a hissing noise coming from the engine bay. Seemed to be coming from under thr car so got under and could feel the air...

  12. strange hissing noise?

    my leon tfsi fr makes a strange hissing noise!!! When i turn the engine off and get out i can hear a hissing noise that sounds exactly like air coming out of the front tyres. It clearly isnt the tyres as i have checked the pressures over the past week or so. It must be in the engine bay...
  13. jason-jm

    hissing all the way though the revs

    :confused:It sounds like theres a big build up of air under my bonnet, even witha standard DV is this normal?

  14. hissing shock absorber

    Hi everyone i have just bought my first seat (altea)and have started to notice a strange hissing noise from the front passenger side shocker(i think??)When i go over anything i get what sounds like the gas escaping from the shocker.If this is a shocker is it covered on the manufacturers...

  15. hissing noise turbo/intercooler pipes

    has an one had any experience of problems with intercooler pipe work? My 2.0TDI has a hissing air rushing sound from the bottom righthand side of the engine bay. It's difficult to hear but between 1500-2500rpm you can hear as the turbo boost rises and falls. started to open my window when...
  16. Georgie

    hissing noises

    on the way back from snetterton yesterday noticed a hissing noise from car. only under load, significant power loss now, wont get past 100, sooting a fair amount (well seems more than normal to me) vagcom comes up with faults on the manifold pressure sensor and manifold temperature...
  17. deano w

    hissing noise

    Sat at the traffic lights today when i heard a hissing noise and then steam or smoke seemed to come out from underneath the car. Does anybody know what this could be or had the same problem. Car had not been thrashed and had only travelled 1 mile. The air con was on, just wondered whether it was...
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