Club126UK

Fiat 126 Chat => Fiat 126 Mechanical Problem Solving => Topic started by: fsmlittler on November 04, 2006, 09:07:53 AM

Title: Coils
Post by: fsmlittler on November 04, 2006, 09:07:53 AM

The saga so far:
Fitted my nice new 126 engine and gearbox in my 500 and all ran well for a couple of days then stopped with no spark. Replaced the coil(square type) and condensor. Car then ran for a couple of days before stopping again. Replaced the coil again and added a ballast resistor. Once again this lasted for a day or so before stopping.
Help

Title: Coils
Post by: bis13 on November 04, 2006, 10:02:48 AM

simple put the 500 engine in a 126 , its probably a transplant rejection!!!!  it looks like the best bet is a auto electrician its worth the payout to get rid of a headache such as this.

Title: Coils
Post by: fsmlittler on November 04, 2006, 10:48:26 AM

Rest assured no 126s were harmed in the making of this vehicle....New 126 engine from Italy-No donor car!

Title: Re: Coils
Post by: ChrisRLewis on November 04, 2006, 11:41:24 AM

Quote from: "fsmlittler"

The saga so far:
Fitted my nice new 126 engine and gearbox in my 500 and all ran well for a couple of days then stopped with no spark. Replaced the coil(square type) and condensor. Car then ran for a couple of days before stopping again. Replaced the coil again and added a ballast resistor. Once again this lasted for a day or so before stopping.
Help

The problem then either seems to be the condensor or the coil then, if it works when you replace these. I would suspect that the ballast resistor is not wired correctly. Have you taken a voltage reading off the low tension, ignition on engine off?

Title: Coils
Post by: fsmlittler on November 05, 2006, 04:16:55 PM

I've got the ballast resistor wired in line between the positive supply and the positive connection on the coil. What readings should I have?

Title: Coils
Post by: ChrisRLewis on November 05, 2006, 04:47:41 PM

Checking my data book it should be 11v, I would have thought it would have been less than that? Perhaps someone else could take a reading of their car?

Try ignition on, engine off take a voltage reading direct off the battery and then another reading off the low tension + on the coil to earth. Remove the low tension lead from the coil first.

The coil reading should be less than the battery, which shows that the ballast resistor is working.

Title: Coils
Post by: 126dave on November 26, 2006, 04:51:35 PM

on the coil subject.......on the twin coil as fitted to the polish a/c..does it matter which HT leads go to where???

Title: Coils
Post by: fsmlittler on November 26, 2006, 07:18:42 PM

Shouldn't make any difference as both fire at the same time, hence the 'wasted spark' title.