Engine & Gearbox 2004 CDTI starting issues plus loss of power and exhaust fumes coming back up intake!

Discussion in '7th Generation (2003-2008) [Acura TSX]' started by Nicholas Beardmore, Sunday 2nd Sep, 2012.

  1. Hi Folks,

    I know its my first post but would really appreciate some advice on this ongoing issue with this motor. Its always been well serviced but has suffered from injector blow, premature timing chain wear, rear rotors/bushes, failure of hatch back motor, cracked manifold, and within the last week (and only fixed 6 months ago yet again another blowing injector... honestly the list goes on and on I wish I had not have brought this car!....

    Anyway, for around a year now this car has struggled to start, sometimes, first turn and others several. In addition, it pulls strong up until 2100rpm then, mainly in 4th gear it will hold back for some reason. There has been a few occasions under heavy loads (family in car 4 bikes on roof climbing up hill) where you can hear a massive amount of air rushing through what I believe to be the turbo. However, this is intermittent as I could do exactly the same just after and no such event happens.

    No engine management light is NOT on and no faults are issued on ECU....

    So far I have changed fuel filter (Honda) = no change and more recently I have cleaned the MAF. Funny thing was that there was a small amount of oil within the intake pipe that connects to the MAF and some actually within the MAF itself. I have searched long and hard and have still no answer for this. When I purchased the car it was overfull with oil and can only assume this created enough back pressure to spit some back??? I assumed the MAF was faulty because a friend of mine told me if you disconnect the MAF power connector whilst the engine is running a difference in engine sound should be present.. This is not the case with mine as it sounds the same. Anyway, after I clean the MAF I started the engine with airbox off to see if any engine oil was present whilst running. It did not seem be the case but when I switch the engine off exhaust gases start to appear from the intake pipe thats connected to the MAF?? This might explain why is struggling to start and is obviously fouling the MAF but any ideas why??

    I assumed it to be the EGR but have undone 4 nuts on top but it pulls up 10mm and no further... Is it stuck open and thats why it won't remove or am I barking up the wrong tree altogether here. The car smokes slightly upon a difficult start-up but is otherwise fine.

    I thank-you for any help given.

    Cheers
     
  2. Jon_G Guest

    Re: 2004 CDTI starting issues plus loss of power and exhaust fumes coming back up int

    Hi Nicholas, welcome to the club! When you have a few spare minutes please post a message here... Introduce Yourself • Honda Karma

    As you probably know, for emission compliance purposes the EGR vents exhaust gases back into the engine intake, therefore exhaust clag does unfortunately cause oily, sooty fouling to a the intake passages and components (and fumes). I don't think this has been caused by a previously overfull sump, although that should be avoided.

    Disconnecting the MAF should normally bring up the ECU light and record a DTC relating to the loss of this sensor!

    Noise/loss of power could be an intermittently leaking (loose/split) air pipe between turbo (at rear of engine) and intake (at front) via the intercooler. But I suspect a stuck EGR valve - have a search for a DIY for removal and cleaning.

    Good luck and please report back on your efforts.
     
  3. Re: 2004 CDTI starting issues plus loss of power and exhaust fumes coming back up int

    Hi Thanks for your response,

    All pipes seem intact and sound. When I disconnect MAF power the engine management does come on but after connecting and driving several miles the light goes back off....

    I have searched for diy EGR no good, I looked at it again and it seemed common sense to take whole unit out so I had a go.

    I tried to take off EGR today but the previous idiot that had ago and has rounded the 12mm nut off on the bottom of the exhaust intake . I tried various methods to get it loose, no chance. This means I would have to take the whole rail off forget that. If it is EGR I'm thinking of going down the delete option. Has anyone any experience of this? Can it be done leaving the old clogged up unit in situ and any idea of cost?

    Many thanks
     
  4. mcgowanp Senior Member ★ ★ ☆ ☆ ☆

    To remove the bolt you could try something like this.

    http://m.screwfix.com/p/irwin-5-piece-bolt-grip-nut-remover-set/96028


    There are other kits where you drill a hole and use a tap type extractor.. .
     
    Loading...
  5. Coco Junior Member ☆ ☆ ☆ ☆ ☆

    Re: 2004 CDTI starting issues plus loss of power and exhaust fumes coming back up int

    Yes go for the EGR valve, it could be stuck open or closed and will need replacing if that happens to be the case. Had almost similar experience with mine though saloon but now drives fine after EGR replacement.
     
  6. Jon_G Guest

    Re: 2004 CDTI starting issues plus loss of power and exhaust fumes coming back up int

    Although there is a company called Premier Tuning who offer an 'EGR delete' remap, it is nevertheless still a requirement to have a functioning EGR valve as a small amount of exhaust gas still needs to be bled into the intake under certain (limited) circumstances. So you will have to be sure that your's is working whether you go down this route or not!
     
  7. Ichiban Founder Staff Team

    England CJ Leeds
    30,120
    6,377
    516
    Re: 2004 CDTI starting issues plus loss of power and exhaust fumes coming back up int

    You sure they are tunning firm ..from what I have seen its a file uploading cowboys r us ... from what I an seen on a Civic forum these lot are getting some rather odd question about thier ERG delete and I can hear their flapping from here . I have personally seen these EGR delete on Dave car and it total disaster.
     
    Loading...
  8. SayamaAccord Top Contributor ★ ★ ★ ★ ☆

    Re: 2004 CDTI starting issues plus loss of power and exhaust fumes coming back up int

    As suggested those Irwin extractors should shift the bolt - they are really good.
     
  9. Re: 2004 CDTI starting issues plus loss of power and exhaust fumes coming back up int

    Many Thanks folks, Shame they do not do a 12mm in that kit!

    Where the bolt is it only alows the thickness of the steel of a normal socket on it and access is limited= no chance drilling. Are these irwins same with as a normal socket? How much success do people have with EGR clean? a new ones £660!?
     
  10. Jon_G Guest

    Re: 2004 CDTI starting issues plus loss of power and exhaust fumes coming back up int

    Yeah, it's a stupidly high price for a new one! From reading this and other forums, cleaning has a high success rate.

    Good luck in removing it... sounds nasty. Any way of using Mole grips, or hammering on a slightly smaller whitworth/imperial socket or spanner? Chisel, even?