the wire for it runs down the belt cover
General Punto mystery problem.
- Thread starter Atticus!
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General Punto mystery problem.
the wire for it runs down the belt cover
Ok finally got my car back from the bodyshop so im able to start checking faults again with this.
Drove back from luton to brum with no problems which i was grateful for!
However this morning upon start it shot out a bunch of white smoke out the exhaust and was misfiring badly on the way to work!
Any thoughts?
Drove back from luton to brum with no problems which i was grateful for!
However this morning upon start it shot out a bunch of white smoke out the exhaust and was misfiring badly on the way to work!
Any thoughts?
head gasket
lol its just been done about 400 miles ago if that!
Skimmed pressure tested and new gasket etc.
Anything else that causes white smoke?
Skimmed pressure tested and new gasket etc.
Anything else that causes white smoke?
I'm inclined towards HG, too. If you look at your fugures you have 2 adjacent cylinders with low(er) compression, which is usually an indicator. Get another compression test and I'll bet they're lower.
does this mean i need it re-skimmed and new gaskets etc?
So theres nothing else that causes white smoke on start-up?
So theres nothing else that causes white smoke on start-up?
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White clouds from the exhaust are either oil smoke or water/steam. Oil usually has a blueish tinge and if its that visible would smell of burning oil.
Every litre of petrol makes another litre of water that exits the exhaust as steam so on cold damp days it will "smoke" on startup but quickly clears as the engine and exhaust heat up.
If the car is making a lot of white smoke and the coolant level is dropping and there are signs of adjacent cylinders showing lower compression the odds are the head gasket has failed.
If the original leak that caused it to fail last time has not been fixed the chances are the coolant level has dropped (as before) and damaged the new gasket.
If the "smoke" smells like coolant tank does when its hot then you certainly have a blown head gasket or a cracked head casting as that's the only way for coolant to get into the exhaust.
Every litre of petrol makes another litre of water that exits the exhaust as steam so on cold damp days it will "smoke" on startup but quickly clears as the engine and exhaust heat up.
If the car is making a lot of white smoke and the coolant level is dropping and there are signs of adjacent cylinders showing lower compression the odds are the head gasket has failed.
If the original leak that caused it to fail last time has not been fixed the chances are the coolant level has dropped (as before) and damaged the new gasket.
If the "smoke" smells like coolant tank does when its hot then you certainly have a blown head gasket or a cracked head casting as that's the only way for coolant to get into the exhaust.
the problem last tie was a jammed thermostat which has been fixed.
It only smokes on start up and doesnt do it again as far as i can tell....
getting seriously pissed off with this engine!
It only smokes on start up and doesnt do it again as far as i can tell....
getting seriously pissed off with this engine!
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All engines "smoke" on startup.
it is 100 % the chip on the distributor, costs around 70 euros, that is all the problem.
very difficult to detect cos its intermittant and shows signs as if misfiring, and will show more frequently if accellaration is abrubt. 2 brands for that chip, magneti marelli or a french one forgot its name. If you live in Italy they would have changed it for you in no time its really easy to dedect because that is the only weak point a FIRE fiat engine with injection has from running smoothly, other than that they are bullet proof!
Regards MArgaux
very difficult to detect cos its intermittant and shows signs as if misfiring, and will show more frequently if accellaration is abrubt. 2 brands for that chip, magneti marelli or a french one forgot its name. If you live in Italy they would have changed it for you in no time its really easy to dedect because that is the only weak point a FIRE fiat engine with injection has from running smoothly, other than that they are bullet proof!
Regards MArgaux
it is 100 % the chip on the distributor, costs around 70 euros, that is all the problem.
very difficult to detect cos its intermittant and shows signs as if misfiring, and will show more frequently if accellaration is abrubt. 2 brands for that chip, magneti marelli or a french one forgot its name. If you live in Italy they would have changed it for you in no time its really easy to dedect because that is the only weak point a FIRE fiat engine with injection has from running smoothly, other than that they are bullet proof!
Regards MArgaux
puntos don't have a distributor
stepuntogtsshhhh
New member
just sat and read all pages of this thread and there a few different oppinion's so with the pressure difference between some cylinders being over 15 psi this is the most likely cause, this would cause a misfire and engine to run on three all cyliners should be within 10psi my gt reads 144 149 142 150. and the underlying problem could be a warped head or block u said that the head was skimmed was it inspected for cracks don't forget under heat and pressure that a hair line crack would open and even leak may be a shot in dark but when was last time u got injectors cleaned when on idle put your fingers on them to see if there pulsing correctly one may be faulty or blocked and could be cause of first gasket failure hope this helps
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just a wonder?
Could it be a sticking valve? Not allowing fuel in or fumes out?
Have you done a Injector Test - a failing injector might fuel fine for a while, might miss now and then, defo worth having an injector test
Ziggy
Could it be a sticking valve? Not allowing fuel in or fumes out?
Have you done a Injector Test - a failing injector might fuel fine for a while, might miss now and then, defo worth having an injector test
Ziggy
only just checked the tread again guys......
some various opinions here and dont know what to do.
I have replaced the cam sensor and crank sensor today and still plays up.
Like i said before i have ran some injector cleaner through it very recently, also got a stethoscope onto the injectors to have a listen to the pulse, one seems weaker than the others but only slightly.
that one about the distributor chip or something sounded promising but looks like a false lead. i have noticed that if i am careful with my acceleration and just feather it everywhere my problems are reduced and dont occur as often dont know what that could mean?
next thing to try is a new inlet with injectors etc
any other thoughts? this is proving to be a right bastard to diagnose!
some various opinions here and dont know what to do.
I have replaced the cam sensor and crank sensor today and still plays up.
Like i said before i have ran some injector cleaner through it very recently, also got a stethoscope onto the injectors to have a listen to the pulse, one seems weaker than the others but only slightly.
that one about the distributor chip or something sounded promising but looks like a false lead. i have noticed that if i am careful with my acceleration and just feather it everywhere my problems are reduced and dont occur as often dont know what that could mean?
next thing to try is a new inlet with injectors etc
any other thoughts? this is proving to be a right bastard to diagnose!
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your compressions are unbalanced
whether this would cause your problem probably not
i would get an emmisions test done see if hc is high pointing to a h/g issue
get a vacuum guage on it and see what it does with regards sticky valves reading ideally should be 18 rock steady
you say new plugs fitted but even new plugs can be faulty
finally you say you fitted new crank and cam sensers but i assume you just plugged into the existing loom connectors
had an issue a few months back where these wires were picking up erronious signals from other electrics and causing drop out to the ecu,changed these cables by cutting out at a scrappies and resoldering in and fault cured
of course if you could take the car to a man that could do live data he would probably find your fault in minutes but look at all my suggestions please
whether this would cause your problem probably not
i would get an emmisions test done see if hc is high pointing to a h/g issue
get a vacuum guage on it and see what it does with regards sticky valves reading ideally should be 18 rock steady
you say new plugs fitted but even new plugs can be faulty
finally you say you fitted new crank and cam sensers but i assume you just plugged into the existing loom connectors
had an issue a few months back where these wires were picking up erronious signals from other electrics and causing drop out to the ecu,changed these cables by cutting out at a scrappies and resoldering in and fault cured
of course if you could take the car to a man that could do live data he would probably find your fault in minutes but look at all my suggestions please
Looks like after all that time and hundreds spent on parts, the part that was playing up was a £10 crank sensor!
FML!
FML!
yeah i bought another one because the garage insisted it would be that!
i bought a second hand one the first time and it was faulty by the looks of it, put a brand new one on and it runs fine
i bought a second hand one the first time and it was faulty by the looks of it, put a brand new one on and it runs fine
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Moral:
NEVER use unproven used sensors. If its old its likely to be just as c**p as your own old part
BTW. Valves if they stick (very very rare unless bent) jam open so you little or no compression.
NEVER use unproven used sensors. If its old its likely to be just as c**p as your own old part
BTW. Valves if they stick (very very rare unless bent) jam open so you little or no compression.
