PaulTobiasx1/9
New member
- Joined
- Sep 24, 2007
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- 73
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Problem still not fixed. Have not managed to get a compression testing unit yet, new throttle body has not fixed the issues (so new Throttle position sensor and idle air control valve came with.)Sorry to butt in guys - I have a Cinquecento. The misfiring/kangaroo petrol/stalling took me a few days to suss out. There were no error codes ..
Disconnect the electrical connector on the MAP and run the car. If the symptoms disappear or seem to have 'eased' .. suspect the MAP.
As a rough rule of thumb, worn piston rings burn oil and leave a cloud of smoke behind when you accelerate. A burnt or split exhaust valve can cause what feels like a misfire. A compression test followed by a 'wet' compression test can help identify the problem
** Before anybody rushes off and pays lots of money to have a new head gasket .. try one of the modern head-fix additives. I'm told that the 'steel seal' is excellent.
http://www.ebay.co.uk/sch/i.html?_odkw=punto+map&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR6.TRC0.A0.H0.Xcylinder+head+fix.TRS0&_nkw=cylinder+head+fix&_sacat=0
Tried a new MAP sensor at the scrapyard and the problem did not improve.
The oil is getting used up fast, but not seeing particularly much of anything coming out of the exhaust.
I wonder if the exhaust valve you mentioned could be it, how easy to change ?
Paul
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