Technical Newbie in Trouble

[Mark_1]

Hi! I am new to the forum but have been reading a few posts. I have a 1100 uno mia. Took it in to have cambelt changed and ignition timing set and now it has a misfire underload. Took it back today and they said it is the fuel pump now - had that replaced problem still there:bang:

Ps Vacuum advance replaced as well & electronic pick-up

Any help would be appreciated

 

[Dunc Uno Turbo]

plugs and leads? when were they last changed? dizzy cap?

Dunc

 

[Mark_1]

Hi

Leads and plugs are new - serviced 3000km ago

Problem started after the cambelt change!

 

[Uno driver]

I think your engine is out of phase, check https://www.fiatforum.com/punto-technical/19733-photos-timing-marks-8v-f-i-r-e-engines.html

 

[punto5dr]

I think your engine is out of phase, check https://www.fiatforum.com/punto-technical/19733-photos-timing-marks-8v-f-i-r-e-engines.html

I'll agree with that.

 

[Mark_1]

Thanks for the info will check that tonight.

 

[UnoMia]

Hi
I've also got an Uno Mia, 1100cc and had exactly the same problem a couple of years ago. The engine idled fine but when pulling under load it misfired. After trying loads of possibilities I changed the plug leads, a new set was not expensive and the problem was solved! It turned out that there was a pin hole in the #4 plug rubber boot and this would track to the head when under load, normally in was fine. As this problem just showed up unannounced I thought maybe it's just coincidence that yours occured after the cam belt change.