Panda (Classic) Snatch Panda

[AndyPanda4x4]

I can offer you no advice nor help, but I wish you all the best in your current dilemma.

 

[kolza]

I know i shouyldn't say that loud but does ir do the same with no air filter?

 

[kolza]

Other quick check- stick old rag in exhaust not blocking it fully, just a bit to build back pressure.

 

[Dragon Man]

bad HT lead, spark plug, coil pack, injector, MAP sensor. it is pretty much all it can be on these engines. very rare it has been known that the CPS can cause it.. but normally if that fails the engine just wont run at all. any ECU light?

unplug different injectors so you know what cylinder is doing it.. thats the way i do it. (if you have a cat it also stops it from being poisoned hehe)

fallout had a misfire and it turned out to be the pipe connecting the MAP. it was split right near the sensor so it did not really cause a vacuum leak. (i have a vacuum gauge installed for attempted better "economics")

 

[pandamonius_maximus]

I could give that connector a wriggle next saturday...that helped you out in Como...that sentence is more innocent than it might appear...

Sensor fault sounds like the most sensible thing I can blurt out from my side as well.

 

[andyholli]

Thank you men. Its a single cylinder issue and I'm slowly making progress on the diagnosis.



Its been an expensive adventure so far though..

 

[AndyPanda4x4]

You seem to love working on your head Andy..

 

[kolza]

Any idea why there is suh a difference in colour in the top pic?
Much more heat at that end? or what? worn valve steam guide?

 

[AndyPanda4x4]

My money's on the flash ruining the picture, but don't quote me on that.

 

[andyholli]

You seem to love working on your head Andy..

I didn't expect to be doing this much work on it at my age.. but its in lovely condition considering the history.

 

[AndyPanda4x4]

I didn't expect to be doing this much work on it at my age.. but its in lovely condition considering the history.

It does have a good shine to it, I'm sure there's plenty of action left in the old lad yet

 

[andyholli]

Any idea why there is suh a difference in colour in the top pic?
Much more heat at that end? or what? worn valve steam guide?

Good spot I didn't notice before you pointed it out - so could just be the flash but if not then the low temps resulting from the cylinder four misfire may explain. Stem seals are all new now but could be a legacy if they weren't all equally worn before.

Misfire definitely linked to vacuum not revs so back on high tension electrics and hoping for new plug lead to fix it..

- Seem to have bought another Punto (by accident) to help with diagnosis..:bang:

 

[AndyPanda4x4]

Twin-engined Snatch? Or two heads are better than one?

 

[panda-sport]

crazy thoery time What if you have a lazy hydraulic lifter? The 'missfire' could be a smaller bang due to just one inlet valve opening which is cured when reved due to the increase in oil pressure! :chin:

 

[kolza]

crazy thoery time What if you have a lazy hydraulic lifter? The 'missfire' could be a smaller bang due to just one inlet valve opening which is cured when reved due to the increase in oil pressure! :chin:

Which can lead to clogged cyl 4 oil channels in conjunction with the fact that cyl 4 is the furthest from oil pump = 'lazy lifter at low revs.

Which oil grade are you using A.?

 

[FDNY21]

You may have seen this before Andy but thought I'd share it as I just came across it... http://www.drivebysnapshots.com/fiat-panda-4x4-mk1-snatch-panda-at-le-mans-2014/

 

[blu73]

I shall drop a link in the comments as he clearly loved the car

 

[andyholli]

crazy thoery time What if you have a lazy hydraulic lifter? The 'missfire' could be a smaller bang due to just one inlet valve opening which is cured when reved due to the increase in oil pressure! :chin:

Thanks for the logic chaps - its very useful to have other brains at work too.
-I did consider this possibility so when the cam box was last off I swapped the lifters around (well strictly they fell out and I wasn't sure where they came from so took the chance to swap them about.)
It's also had an oil change (10w40 semi synth).

Still thinking ht issue. - I think I noticed a bit more interference than usual on the radio, driving it about today.

Thanks for the link FDNY21 - they're linked earlier in the thread too sometime around June/July 2014 possibly. As you say, he seemed to like the car. It looks odd seeing it on 13's now.

 

[kolza]

Radio interference = ground distribution issue, bat to engine and bat to chassis.

 

[andyholli]

Quick test drive and fault may be fixed.. test thoroughly tomorrow before a final euphoric declaration though.

In the meantime some new, lighter rims for Andy's old Extreme Forests. Please excuse the poor photo quality: