(T) Do mod'd Cinqs start and idle ok?

You can tell i haven't got much work on this week!

Given the number of posts from folk having cold starting and idle problems - do modified sporting Cinqs/Seis not have worse problems?

When you take the factory airbox set-up out you also lose some of its cold start system, so surely cold start and tickover becomes more of a problem than in the standard car?

After my troubles with the roadpea, i'm keen to have some trouble free motoring with the new Sporting (what am i saying? 'trouble free'? - its a Fiat Cinq duh!!)

Maybe i'd be better getting an exhaust rather than an induction kit to get me that extra few HP?

cheers

D

When you change anything like that the ECU has to re learn, this can take up to 300 miles.

The bottom line is that Fiat spent millions of Lira setting the engine up to work in a variety of conditions, and you've spent a £100 on a modification. There are bound to be issues, and if you can't live with them, leave it alone.

Cheers

D

The previous owner of my car stuck in an induction kit that runs well, and the car idles sweet and smooth. There are no issues with cold start either, but then my engine is different (MPI) so not sure it it's the same in others.

Not a bad ratio, lol, 1 million lira is around 400 quid :P

I did a few mods to mine, started fine every time and idle'd prity low and hunted abit(due to cam and flywheel)

Really depends how much you modify them! All mine start and run OK....... at least, when the engines are in one peice!

With a big throttle and airbox mine takes a mile or so until you can open it wide up without it complaining.

Cars can also suffer from this


..Which is why car manufacturers fit the bit that most induction modders remove.

(Carb icing is most likely to occur in humid conditions at above 25 dec C BTW)

Id suggest that unless youre inhaling puddles or small loch's small bits of water (as caused in carb icing / inlet icing) isnt going to affect things massively - as the system measures the inlet air temperature and can adopt different ignition strategies at certain points.

My Cinq 1242 (small TB / P75 cam ) doesnt idle too quietly, its always been rather lumpy too

Might be an ideas to do a compression test.

i agree with fingers , mine i have had the usual , cam change, chipped, exhaust back box, 38mm T.B and a modified induction system and i have no trouble at all, it always starts first time and i have a smooth idle .

Arse, Carb icing doesn't work like that, at low throttle settings the ice, which comes from vater vapour condensing out of the air, builds up around the butterfly valve and throttle venturi and can rapidly affect the airflow into the throttle body choking the engine causing rough running or in extreme cases, stalling. This is why it can be a killer in light aircraft, and why car manufacturers have some form of controlled warm air induction systems.

Vehicle modders can usually live with the chancee that occasionally their engines may suffer from carb icing when the conditions are right but manufacturers have to cater for it.

So, in fact, what we are actually saying here, is, that despite rumours to the contrary, the K and N filter is the besy for a Cento.

Cheers

D

That what i'm after - all the advantages and no side effects! What sort of power increase do you reckon you've acheived and how bad is your average fuel consumption now?

I see there's a guy selling a chipped ECU in the classifieds - easy enough to remove the chip and put it in my ECU? (i.e is it a socketed or soldered chip?)

cheers

D

You won't know whether it's socketed or soldered until you've popped the ECU. Always best to contact McCritch before buying a chip (assuming it's one of his chips!).

If the car is healthy, a decent exhaust, McCritch chip, punto 75 cam, 4 into 2 into 1 mani and tricker TB and GSR should produce 65 to 70 bhp (depending on the rolling road). The result should be a driveable car which starts easily and does better than 40 mpg.

It's only when you start sticking really lumpy cams in that problems with idle are likely.

Which is why, if you're having starting and idle issues I suggest a compression test.

Cool - that sounds like a plan then (medium/long term that is!)

My tickover problem was in my 900 Cinq - and its sorted now thanks to everyones advice on here - cheers! Started three mornings on the trot now without a touch on the throttle.

Now thats fixed i can flog it with a clean conscience and concentrate on getting my new sporting on the road (clutch!) happy days.

Only problem is the warning lights still on - apparently you have to get Fiat to reset that or it will stay on forever despite the problem being fixed? Unless anyone on here knows how to reset it?....

PS how does this 'thanks' system work on here and it is important to do that? I should be dishing out thanks all over...