benspain_uk Posted September 18, 2006 Report Share Posted September 18, 2006 I have just had the cambelt changed on my Lupo GTI, and the car seems to have much less power which is especially noticable at higher revs.Anyone got a clue why this would be the case? Quote Link to comment Share on other sites More sharing options...
Dubya Posted September 18, 2006 Report Share Posted September 18, 2006 Sounds like the timing might be out, if he hasn't locked everything off when he's taken the belt off. Take it back, and get him to double check the cam to crank timing style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> Quote Link to comment Share on other sites More sharing options...
MattEB Posted September 18, 2006 Report Share Posted September 18, 2006 How much power has been lost, lots or just a bit? Quote Link to comment Share on other sites More sharing options...
benspain_uk Posted September 18, 2006 Author Report Share Posted September 18, 2006 How much power has been lost, lots or just a bit?Not a huge amount - it just doesn't feel anyway near as "peppy" as it once was. No lights on or black smoke/runnig hot so if can't be that far out....What do you guys think? Quote Link to comment Share on other sites More sharing options...
db Posted September 18, 2006 Report Share Posted September 18, 2006 Dale had this on her GTi, it was also making a chirrup sort of noise, she took it back and the garage said it was too tight, so they loosened it off a little bit and she said it drives normally again. style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> Quote Link to comment Share on other sites More sharing options...
nfbr Posted September 18, 2006 Report Share Posted September 18, 2006 ^ as Luke says - One reason for it being too tight could be to do with the tensioner either being set too tight (or if its an auto tensioner, then sometimes take a little while to wear in to their normal level) Quote Link to comment Share on other sites More sharing options...
Dubya Posted September 19, 2006 Report Share Posted September 19, 2006 Pop your bonnet and check the tension. You should be able to comfortably twist the belt to 90 degress on, on the slack side of the circuit.One tooth either way on timing will have a noticeable impact on outright power and driveability. style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> Quote Link to comment Share on other sites More sharing options...
benspain_uk Posted September 20, 2006 Author Report Share Posted September 20, 2006 Thanks for all the help guys - looks like another trip back to the garage. Trouble is they are only open on weekdays - so it really means another day off work!Any idea as to how long the process will take? I'm guessing if it is too tight (which I will test tonight) then it is a two second job. How about if the timing is out due to the belt change? two second job to fix it - or a couple of hours to remove, set up and then replace the belt?I'll phone up the garage and ask then their advice.I guess if the timing is out, the emmisions would be bad?.....Just thinking of a quick way to fault find. Quote Link to comment Share on other sites More sharing options...
Teflon Posted September 20, 2006 Report Share Posted September 20, 2006 armchair mechanics!!! i love it!it's virtually impossible to check the tension of the belts on a lupo gti using the 90 degree method because there's no place where there is a long enough stretch of belt to check it...they have automatic tensioners anyway.....my guess is that the belt between the two camshafts is too tight. Quote Link to comment Share on other sites More sharing options...
Mitchell Posted September 21, 2006 Report Share Posted September 21, 2006 check the position of the tensioner alignment fork, theres a diagram in here somewhere style="vertical-align:middle" emoid=":huh:" border="0" alt="huh.gif" /> Quote Link to comment Share on other sites More sharing options...
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